http://www.mccloskeylab.com/undergraduategallery daily 0.75 2026-03-27 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1711740489871-RX51CJ0JSGELFYF4SVFL/Ananya+Subramani.jpeg Undergraduate_gallery Noe Jean Senior, Chemical Engineering LinkedIn Noe works with Karim studying lithium and sodium electrolyte transport phenomena. Outside of the lab he enjoys going on walks, reading, and playing basketball. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1711740489871-RX51CJ0JSGELFYF4SVFL/Ananya+Subramani.jpeg Undergraduate_gallery Noe Jean Senior, Chemical Engineering LinkedIn Noe works with Karim studying lithium and sodium electrolyte transport phenomena. Outside of the lab he enjoys going on walks, reading, and playing basketball. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1626395493229-OFA9FALQ8SSNPF395418/Ananya+Subramani.jpeg Undergraduate_gallery Aryan Narang Junior, Chemical Engineering Aryan is a third-year chemical engineering student working with Zach to research conditions affecting the onset of lithium plating in full cells. After graduating, he hopes to work in the energy sector. His interests are soccer, F1, and traveling! https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1712265554975-1ET2DGIK54WAFSNHSKCB/Ananya+Subramani.jpeg Undergraduate_gallery Jiyun Kang Senior, Chemical Engineering LinkedIn Jiyun works with Jaeheon to study cathode materials for lithium-air batteries in humid conditions. She enjoys picnics, reading, and exploring new dessert places. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774487660975-UKM7GM4L2464PUF9497F/image-asset.jpeg Undergraduate_gallery Carolina Davalos Junior, Chemical Engineering Carolina works with Jaeheon to study Metal Organic Frameworks (MOFs) as a solid electrolyte for batteries. In her free time, she enjoys watching movies, exploring new places, and listening to music. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1505790818856-4E7I8W8S6ZADNPG32TLF/Gilman_Hall.jpg Undergraduate_gallery Keren Zhang Senior, Chemical and Biomolecular Engineering https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774487225236-9KSGO4EKV1ZOL8Z9LXYR/image-asset.jpeg Undergraduate_gallery Catalina Bello Junior, Chemical Engineering Catalina works with Feben and Ning to study sodium plating and stripping phenomena. In her free time, she enjoys gardening, trying different cuisines, and exploring botanical gardens. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774487694993-4NA85V4O4D8JIAML6UGN/image-asset.jpeg Undergraduate_gallery Fernanda Vasquez Junior, Chemical Engineering LinkedIn Fernanda works with Libby studying transport phenomena in battery electrolytes, exploring how solvent properties shape ion behavior. Outside the lab, she enjoys reading, baking, and exploring the outdoors. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774577071038-1DI9X6E1FYRLP34QND9J/image-asset.png Undergraduate_gallery Daniel Harith Bin Mohd Khiri Junior, Chemical Engineering Daniel works with Justin studying how electrode fabrication and mixing conditions influence cathode reactivity in lithium-ion batteries. Outside the lab, he enjoys a good game of tennis and travelling with his friends while trying new food. http://www.mccloskeylab.com/pigallery daily 0.75 2024-10-28 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1689218655991-X5HGJTK5LIGEJIUM59JU/headshot_Lowres.jpg PI_gallery Bryan D. McCloskey Department Chair and Professor, Chemical & Biomolecular Engineering B.S: Colorado School of Mines, 2003 Ph.D.: University of Texas, Austin, 2009 E: bmcclosk@berkeley.edu UC CBE, LBNL ESDR, LinkedIn, Google Scholar Bryan McCloskey is the Department Chair and Warren & Katharine Schlinger Distinguished Professor in Chemical Engineering in the Department of Chemical and Biomolecular Engineering at the University of California, Berkeley. He also holds a joint appointment as a Faculty Engineer in the Energy Storage and Distributed Resources Division at Lawrence Berkeley National Laboratory. His laboratory explores numerous applications of electrochemistry to energy sustainability, conversion, and storage. Current projects focus on electrochemical regeneration of alkaline sorbents for direct air CO2 capture, elucidating the fundamental electrochemistry of metal-air batteries, and understanding a variety of challenges facing Li-ion batteries, including high voltage cathode stability, advanced cathode material development (Ni-rich and Li- rich NMC oxides and Li-excess disordered rocksalt materials), extreme fast charging, and low temperature and high transference number electrolyte formulations. He has co-authored more than 175 articles and has won numerous awards for his research, including The Electrochemical Society Charles Tobias Award, The International Society of Electrochemistry Tajima Prize, and the VW/BASF Science Award- Electrochemistry. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1689193989641-DDN7447QSBVDSPBRGIA9/BDM_Photo.jpg PI_gallery Bryan D. McCloskey B.S. Colorado School of Mines, 2003 Ph.D. University of Texas, Austin, 2009 Postdoc., IBM Almaden Research Center, 2009-2011 Research Staff Member, IBM Almaden Research Center, 2012-2013 E: bmcclosk(at)berkeley.edu ResearchGate and Google Scholar Bryan D. McCloskey joined the Department of Chemical and Biomolecular Engineering in January 2014. He was previously a Research Staff Member at IBM Almaden Research Center, where he worked on the BATT 500 project to elucidate fundamental characteristics of electrochemical processes occurring in Li-O2 batteries. His PhD thesis, supervised by Benny Freeman at the University of Texas at Austin, focused on molecular transport through microporous and dense polymeric membranes, with a particular emphasis on membranes for water purification. He received his B.S. in Chemical Engineering at the Colorado School of Mines where his research, supervised by Drs. Thomas McKinnon and Andrew Herring, focused on employing molecular beam mass spectrometry to characterize aromatic hydrocarbon formation during pyrolysis of cellulosic chars. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1689218655991-X5HGJTK5LIGEJIUM59JU/headshot_Lowres.jpg PI_gallery Bryan D. McCloskey Department Chair and Professor, Chemical & Biomolecular Engineering B.S: Colorado School of Mines, 2003 Ph.D.: University of Texas, Austin, 2009 E: bmcclosk@berkeley.edu UC CBE, LBNL ESDR, LinkedIn, Google Scholar Bryan McCloskey is the Department Chair and Warren & Katharine Schlinger Distinguished Professor in Chemical Engineering in the Department of Chemical and Biomolecular Engineering at the University of California, Berkeley. He also holds a joint appointment as a Faculty Engineer in the Energy Storage and Distributed Resources Division at Lawrence Berkeley National Laboratory. His laboratory explores numerous applications of electrochemistry to energy sustainability, conversion, and storage. Current projects focus on electrochemical regeneration of alkaline sorbents for direct air CO2 capture, elucidating the fundamental electrochemistry of metal-air batteries, and understanding a variety of challenges facing Li-ion batteries, including high voltage cathode stability, advanced cathode material development (Ni-rich and Li- rich NMC oxides and Li-excess disordered rocksalt materials), extreme fast charging, and low temperature and high transference number electrolyte formulations. He has co-authored more than 175 articles and has won numerous awards for his research, including The Electrochemical Society Charles Tobias Award, The International Society of Electrochemistry Tajima Prize, and the VW/BASF Science Award- Electrochemistry. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422147296035-K7T7ED8147J3D40NKCFP/BDM_1.jpg PI_gallery Bryan D. McCloskey B.S. Colorado School of Mines, 2003 Ph.D. University of Texas, Austin, 2009 Postdoc. IBM Almaden Research Center, 2009-2011 Research Staff Member, IBM Almaden Research Center, 2012-2013 E: bmcclosk(at)berkeley.edu ResearchGate and Google Scholar Bryan D. McCloskey joined the Department of Chemical and Biomolecular Engineering in January 2014. He was previously a Research Staff Member at IBM Almaden Research Center, where he worked on the BATT 500 project to elucidate fundamental characteristics of electrochemical processes occurring in Li-O2 batteries. His PhD thesis, supervised by Benny Freeman at the University of Texas at Austin, focused on molecular transport through microporous and dense polymeric membranes, with a particular emphasis on membranes for water purification. He received his B.S. in Chemical Engineering at the Colorado School of Mines where his research, supervised by Drs. Thomas McKinnon and Andrew Herring, focused on employing molecular beam mass spectrometry to characterize aromatic hydrocarbon formation during pyrolysis of cellulosic chars. http://www.mccloskeylab.com/visitorsgallery daily 0.75 2024-07-01 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422150671639-ZM8O7S3N84QBQR7HB0D5/Alan+Laricci+sitting+cropped+1.jpg Visitors_gallery Alan C. Luntz Visiting Scholar B.S. Northwestern Ph.D. UC, Berkeley E: acluntz(at)slac.stanford.edu     https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422150671639-ZM8O7S3N84QBQR7HB0D5/Alan+Laricci+sitting+cropped+1.jpg Visitors_gallery Alan C. Luntz Visiting Scholar B.S. Northwestern Ph.D. UC, Berkeley E: acluntz(at)slac.stanford.edu     https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1528846304276-WKXD0R5RUSSCHH1A05AX/Rickey+Terrell+Headshot%5B3199%5D.JPG Visitors_gallery Rickey Terrell Amgen Scholar Senior, Chemical Engineering University of Cincinnati LinkedIn Rickey Terrell is an undergraduate at the University of Cincinnati working at UC Berkeley for the summer as an Amgen Scholar. His work at Cincinnati involves characterizing platinum catalysts for fuel cell applications. His work for this summer focuses on quantifying transport properties in Li-ion battery electrolytes to increase the transference number. http://www.mccloskeylab.com/gallery daily 0.75 2026-03-30 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1713212121008-JZGZW5W4MJARGGPF6Y3C/IMG_20190824_165802.jpg Graduate_gallery Karim Karouta 5th year graduate student B.S. University of Texas, Austin, 2019 Karim is a fourth-year graduate student in the Reimer and McCloskey groups working to understand ion transport and solvation in electrolytes with PFG and ENMR. He enjoys team sports and small concerts. He has interned at P&G and Genetech and has worked briefly as a ski instructor. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1713212121008-JZGZW5W4MJARGGPF6Y3C/IMG_20190824_165802.jpg Graduate_gallery Karim Karouta 5th year graduate student B.S. University of Texas, Austin, 2019 Karim is a fourth-year graduate student in the Reimer and McCloskey groups working to understand ion transport and solvation in electrolytes with PFG and ENMR. He enjoys team sports and small concerts. He has interned at P&G and Genetech and has worked briefly as a ski instructor. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1682111254393-MRT1B3EOX6R2ARP01P34/IMG_20190824_165802.jpg Graduate_gallery Ning Guo NSF Graduate Research Fellow 5th year graduate student B.S. Texas A&M University, 2021 E: ningxguo(at)berkeley.edu LinkedIn and Google Scholar Ning’s current project focuses on developing novel liquid electrolytes to enable extreme fast charging of lithium-ion batteries. He received his B.S. in Chemical Engineering from Texas A&M University in 2021. He performed his undergrad research with Dr. Perla Balbuena focusing on first-principle calculations and molecular dynamics simulations of SEI nucleation on lithium metal anodes. In his free time, he likes going on long hikes, geocaching, and cycling. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1682111010814-U91RIWGWALGF2GK4TJ08/IMG_20190824_165802.jpg Graduate_gallery Zach Tronstad 5th year graduate student B.S.E. Arizona State University, 2019 E: zachtronstad(at)berkeley.edu LinkedIn and Google Scholar Currently, Zach studies ion transport in composite solid electrolytes for lithium metal batteries. He received his B.S.E. in Chemical Engineering from Arizona State University in 2019. During his time as an undergraduate researcher, Zach worked with Dr. Matthew Green to investigate the effect of hydrophilicity on PVC/PVA electrospun membranes for water filtration. Outside the lab, Zach likes to read and play sports, especially frisbee and basketball. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1674585983484-82OCOAEP925PSD2QCAXL/IMG_20190824_165802.jpg Graduate_gallery Jaeheon Lee 4th year graduate student B.S. Pohang University of Science and Technology, 2019 E: jaeheon_lee(at)berkeley.edu LinkedIn, Google Scholar, and Personal Website Currently, Jaeheon studies the electrochemistry of solid-state metal-air batteries using Differential Electrochemical Mass-Spectrometry (DEMS). Jaeheon received his B.S. in Mechanical Engineering and Chemical Engineering from POSTECH in 2019. Before coming to Berkeley, Jaeheon spent 3 years as a Researcher at the Agency for Defense Development, studying the synthesis and numerical analysis of optimized porous materials and membranes for gas adsorption. In his free time, Jaeheon enjoys watching an orchestra, cooking, and playing musical instruments. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422149882996-W7A92CRT5XI49458J3NR/Sather.jpg Graduate_gallery Peter Dudenas 6th year graduate student B.S. Penn State, 2014 E: pete.dudenas(at)berkeley.edu Pete is a part of Adam Weber's laboratory at LBNL and is shadow advised by Bryan. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1741712124855-F8V90UA53U6WVHOTWD8O/IMG_20190824_165802.jpg Graduate_gallery Justin Rastinejad 4th year graduate student B.S. University of Connecticut, 2022 E: justin.rastinejad(at)berkeley.edu LinkedIn Justin's current research studies disordered rock salt (DRX) cathode materials and tuning the electrolyte to enhance their stability. Using the lab's Differential Electrochemical Mass Spectrometry (DEMS), Justin can analyze the gases evolved in situ during cycling. Outside of lab, Justin enjoys exploring the Bay Area's various restaurants and hiking trails, and performing STEM outreach through BASIS. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1754929961722-IWYLG0OQ3NU1GBZM6GBE/IMG_20190824_165802.jpg Graduate_gallery Devin Schinski 4th year graduate student B.S. University of Illinois Urbana-Champaign, 2022 E: devin_schinski(at)berkeley.edu LinkedIn Devin's current research focuses on studying concentrated aqueous electrolytes at electrode interfaces. His work endeavors to better understand the effects of confinement on the structure and dynamics of the electrical double layer. In his free time, he likes to play guitar, go hiking, and cook. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1741712748440-FTCH4JNTX40T53TLBKB9/IMG_20190824_165802.jpg Graduate_gallery Feben Wolde-Semayat 2nd year graduate student B.S./M.S. Drexel University, 2024 E: feben_wolde-semayat(at)berkeley.edu LinkedIn Feben currently studies the interfacial and transport limitations of sodium-ion batteries. She earned her B.S. in Chemical Engineering and her M.S. in Materials Science and Engineering from Drexel University in 2024, where she worked with Dr. Maureen Tang on investigating the role of additives in enhancing hydrogen electrocatalysis. In her free time, Feben enjoys exploring coffee shops, going to museums, and live music. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774901222007-G5XIJ4KNYBAUVOUKEA43/IMG_20190824_165802.jpg Graduate_gallery Libby Katzman 2nd year graduate student B.S. Columbia University, 2024 E: libby_katzman(at)berkeley.edu LinkedIn Libby studies transport phenomena in complex electrolytes for next generation battery design. Libby gains insight into these systems by using a combination of fundamental electrochemical techniques and Electrophoretic Nuclear Magnetic Resonance Spectroscopy. Outside of lab, Libby enjoys judo, engaging with grad student organizations, and exploring new places. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1484847848360-E25SYZAW802AOPHL9QVT/berlinger+photo.jpg Graduate_gallery Sarah Berlinger NSF Graduate Research Fellow 5th year graduate student B.S. Columbia University, 2016 E: sarah_berlinger(at)berkeley.edu Sarah is co-advised by Adam Weber at LBNL. Her current work focuses on understanding porous electrode formation for application in fuel cells and Li-ion batteries. She also enjoys photography, hiking, and making ice cream. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774486379385-3Q89FR47V88E03C57P1Y/image-asset.jpeg Graduate_gallery Conrad Goffinet 1st year graduate student B.S. Massachusetts Institute of Technology, 2020 M.S.CEP Massachusetts Institute of Technology, 2021 E: goffinet(at)berkeley.edu LinkedIn Conrad currently studies transport phenomena in composite polymer/ceramic electrolyte systems. He is interested in using fundamental electrochemical techniques and continuum modeling to better understand transport characteristics and mechanisms. Before coming to Berkeley, Conrad spent time as a bioprocess engineer at Eli Lilly and an R&D engineer at Via Separations. Outside of the lab, Conrad is an avid intramural athlete, baseball fan, and vinyl enthusiast. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1774486180971-D4P5A0NF89U9PQ5754QA/image-asset.jpeg Graduate_gallery Anna Burson 1st year graduate student B.S. Georgia Institute of Technology, 2025 E: anna_burson(at)berkeley.edu Anna studies sodium plating detection methods within sodium-ion batteries. She earned her B.S. in chemical engineering from Georgia Institute of Technology in 2025, where she contributed to research projects investigating electrode materials for redox flow battery and solid state battery technologies. In her free time, Anna enjoys swimming, baking, and snowboarding. http://www.mccloskeylab.com/postdocgallery daily 0.75 2026-03-26 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1719849075441-JM72UWYD0SRWW75GFFZ9/image-asset.jpeg Postdoc_gallery Bernardine (Didi) Rinkel B.A. University of Cambridge, 2016 M.Sci. University of Cambridge 2017 Ph.D. University of Cambridge 2022 E: rinkel(a)berkeley.edu Didi’s current research focuses on electrolyte degradation at positive cathodes. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1647472783590-UWIL46MB48C52YO1NO0U/image-asset.jpeg Postdoc_gallery Jeonghoon Lim B.S. Hanyang University, 2015 M.S. KAIST, 2017 Ph.D. Georgia Institute of Technology, 2022 E: jeonghoonlim(at)lbl.gov LinkedIn and Google Scholar Jeonghoon’s current research focuses on understanding and development of robust, energy efficient, and cost-effective electrocatalysts for CO2 capture. In his free time, Jeonghoon loves playing tennis, soccer, and travel. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1719849075441-JM72UWYD0SRWW75GFFZ9/image-asset.jpeg Postdoc_gallery Bernardine (Didi) Rinkel B.A. University of Cambridge, 2016 M.Sci. University of Cambridge 2017 Ph.D. University of Cambridge 2022 E: rinkel(a)berkeley.edu Didi’s current research focuses on electrolyte degradation at positive cathodes. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1426620729109-0UXRDIKARNIYMYZGK8I1/HWKim_002.jpg Postdoc_gallery Hyo Won Kim B.S. Hanyang University, 2009 M.S. Hanyang University, 2011 Ph.D. Hanyang University, 2014 E: khw0605(at)berkeley.edu Hyo Won received his B.S. and M.S. from the Chemical Engineering Department at Hanyang University in Seoul, and his Ph.D. from the Energy Engineering Department at the same institution under the guidance of Prof. Ho Bum Park. His research experience spans multiple areas of materials synthesis and characterization research. http://www.mccloskeylab.com/the-yacht daily 0.75 2013-04-29 http://www.mccloskeylab.com/alumni daily 0.75 2026-03-24 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1473911003382-Y8V4BPYZH466840IVG80/image-asset.jpeg Alumni_gallery Howie Nguyen (Amgen Summer Scholar, 2016) Current position: Georgetown undergraduate https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1713212121008-JZGZW5W4MJARGGPF6Y3C/k.png Alumni_gallery Karim Karouta (PhD 2025) B.S. University of Texas, Austin, 2019 Post-lab position: https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1571862544975-6I5ALTD129DUDO139COS/IMG_20190824_165802.jpg Alumni_gallery Triesha Singh (PhD 2024) Thesis Title: Improving the Low Temperature Performance of Li-ion Batteries through Electrolyte Design and Interfacial Engineering B.Tech. Indian Institute of Technology, Bombay, 2019 Post-lab position: Battery Engineer at Tesla https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1713217065601-KWAVO4WA4AE9623Y5QS4/IMG_3519.jpeg Alumni_gallery Kiwoong Lee (Postdoc 2024-2025) B.S. Seoul National University, 2013 M.S. Seoul National University, 2015 Ph.D. University of Michigan, 2023 Post-lab position: Assistant Professor, Yonsei University https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1647472783590-UWIL46MB48C52YO1NO0U/Pic_Jeonghoon.jpg Alumni_gallery Jeonghoon Lim (Postdoc 2022-2025) B.S. Hanyang University, 2015 M.S. KAIST, 2017 Ph.D. Georgia Institute of Technology, 2022 LinkedIn and Google Scholar Post-lab position: Assistant Professor, Chungnam National University https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1674672540551-JW7YSMTPZCB5EU7X46JN/DeyangYu.jpg Alumni_gallery Deyang Yu (Postdoc 2023-2025) B.S. Qingdao University of Science and Technology, 2010 M.E. Institute of Chemistry Chinese Academy of Sciences, 2014 Ph.D. Virginia Polytechnic Institute and State University, 2021 Postdoctoral Scholar, Virginia Polytechnic Institute and State University, 2021-2022 Google Scholar Post-lab position: https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1711740675873-ZO61H97CTUSA48IC36WU/Ananya+Subramani.jpeg Alumni_gallery Rodrigo Hernandez (B.S. 2025) Post-lab position: LinkedIn https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1693590557218-KFOCW2PY55UIBCQVWDDT/IMG_20190824_165802.jpg Alumni_gallery Hailey Boyer B.S. University of South Carolina, 2020 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1712945783029-R8VMWW4YVL99B3Z9KNBZ/Ananya+Subramani.jpeg Alumni_gallery Rania Ahmed (B.S. 2025) https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1626459728059-6LJ3NN6UI163XWZC29DK/image-asset.png Alumni_gallery Dimitrios Fraggedakis (Postdoc 2021-2024) Miller Research Fellow B.S. University of Patras, 2015 Ph.D. Massachusetts Institute of Technology (MIT), 2021 Post-lab position: Assistant Professor, Princeton University https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1693590893626-QCRL4OZAQZZIZ54HA4UB/IMG_20190824_165802.jpg Alumni_gallery Jen Yu Lee (Visiting Scholar 2023-2024) B.S. National Taiwan University of Science and Technology, 2018 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1643411407859-TD4TVFEODL42VCVLIMB1/Ananya+Subramani.jpeg Alumni_gallery Pranav Ramachandra (B.S. 2024) https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1539879074965-719988ZI2SWCJUHG3F5N/HelenBergstromHeadshot.jpg Alumni_gallery Helen Bergstrom (PhD 2023) Thesis Title: Characterizing Ion Correlation and Transport in Next-Generation Lithium Battery Electrolytes NSF Graduate Research Fellow B.S. Brown University, 2015 LinkedIn and Google Scholar Post-lab position: Battery Materials Scientist at Aluminio Inc. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1539878706806-O0VB08J4N7U3X85PBU4L/Matt_Crafton.jpg Alumni_gallery Matthew Crafton (PhD 2023) Thesis Title: Deciphering Electrochemistry of Li-Excess, Cation-Disordered Rocksalt Cathode Materials B.S. Cornell University, 2018 LinkedIn Post-lab position: Research Scientist at Sylvatex https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1539730753932-7CNDMF3IL70MI1VBO69N/Headshot_T-Y+Huang+-+resized.jpg Alumni_gallery Tzu-Yang Huang (PhD 2023) Thesis Title: Advancing Titration and Mass Spectrometry to Quantify Mixed Redox Processes in Li-Excess Cation Disordered Rock Salt Cathodes Berkeley Taiwan Fellow B.S. National Taiwan University, 2013 M.S. National Taiwan University, 2015 LinkedIn and Google Scholar Post-lab position: Battery Scientist at Anthro Energy https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1539732219010-ZIR7H9PM4WHN75VY2FOI/ZachKonz_McCloskeyLabPhoto_14Oct2018.jpg Alumni_gallery Zach Konz (PhD 2023) Thesis Title: Lithium Plating Detection, Quantification, and Modeling to Enable Lithium-Ion Battery Fast-Charging B.S. University of Wisconsin-Madison, 2018 LinkedIn Post-lab position: Senior Battery Engineer at Form Energy https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1662768128827-BW56T69CJ1DZOV08K8BW/Ananya+Subramani.jpeg Alumni_gallery Fatima Yousuf (B.S. 2023) Senior, Chemical Engineering Post-lab position: Battery Engineer at Aluminio LinkedIn https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1645740432911-OVWQ8BI05D9WTOY2CW11/Ananya+Subramani.jpeg Alumni_gallery Kylie Cheong (B.S. 2024) Post-lab position: https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1693326397205-CJYXKDEQMSAO0J03RRRZ/ZachKonz_McCloskeyLabPhoto_14Oct2018.jpg Alumni_gallery Amanda Conde Del Moral (Amgen Summer Scholar, 2023) Post-lab position: Materials Science Ph.D. student at Georgia Institute of Technology https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1510701662613-7VD1ENI9K7WO2B6OBZDV/Elyse+headshot.jpg Alumni_gallery Elyse Kedzie (PhD 2023) Thesis title: Exploring Metal-Air Batteries with Quantitative Methods B.S. University of Southern California, 2017 NSF Graduate Research Fellow Post-lab position: California Energy Commission https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1642706020602-JB1DWH2MX1WFICUQUW11/image-asset.jpeg Alumni_gallery Jingbo Wang (Postdoc 2022-2023) B.S. Wuhan University, 2012 Ph.D. University of North Carolina at Chapel Hill, 2018 Postdoctoral Scholar, University of California Los Angeles, 2018-2021 LinkedIn and Google Scholar Post-lab position: Senior Scientist, Merck https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1662749102887-8O7G3EG89G6RC8NQSW0N/KaraFong.jpg Alumni_gallery David Brown (PhD, 2022) Thesis title: Lithium-ion battery limitations under extreme operating conditions. B.S. Columbia University, 2017 NSF Graduate Research Fellow Post-lab position: Senior Member of the Technical Staff at QuantumScape https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1509066678033-YAVUO7L00H55BV09C3E4/KaraFong.jpg Alumni_gallery Kara Fong (PhD, 2022) Thesis title: Ion correlations and transport in Li-ion battery electrolytes B.S. Stanford University, 2016 M.Phil. University of Cambridge, 2017 NSF Graduate Research Fellow Berkeley Graduate Study Fellow Post-lab position: Trinity College Junior Research Fellow, University of Cambridge; Incoming Caltech Assistant Professor, 2025 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1521222761733-FZE1QB0425KTP04L0K1Q/self-photo-cropped.jpg Alumni_gallery Lori Kaufman (PhD, 2022) Thesis title: Gas evolution studies on emerging cathode materials for lithium-ion batteries B.S. Yale University, 2016 Post-lab position: Scientist, Redwood Materials https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1612393880458-K2PBUHJWTJEHB9RLW6VH/Donghun+Lee.jpg Alumni_gallery Donghun Lee B.S. Yonsei University, 2007 M.S. Yonsei University, 2009 Current position: Cathode material development project, Battery R&D, LG Energy Solution https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1552509512075-PS06GVGW6ZG81LZ318RV/Ananya+Subramani.jpeg Alumni_gallery Ananya Subramani (BS, 2022) Current Employer: Cuberg https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1484847848360-E25SYZAW802AOPHL9QVT/berlinger+photo.jpg Alumni_gallery Sarah Berlinger (PhD, 2021) Thesis title: The governing interactions in fuel-cell catalyst-layer inks B.S. Columbia University, 2016 NSF Graduate Research Fellow Current position: Postdoctoral scholar in the lab of Prof. Joelle Frechette at UC Berkeley https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1483728275403-23Q4A9K4DLFC1A1JI9SV/Eric_Headshot.jpg Alumni_gallery Eric McShane (PhD, 2021) Thesis title: “Quantitative analysis of graphite interphasial species and implications for fast charging” B.S. Cornell University, 2016 NSF Graduate Research Fellow Current position: CEO and Co-Founder, Electroflow Technologies https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1612393700201-FGQ4JTWFTNL7928TRIYB/image-asset.png Alumni_gallery Elizabeth Corson (PhD, 2020) Thesis title: “Plasmon-Enhanced Electrochemical Reduction of Carbon Dioxide“ B.S. Illinois Institute of Technology, 2011 NSF Graduate Research Fellow LinkedIn and Google Scholar Current position: Assistant Professor, University of Kansas https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1597369266859-X2MONDJP1SC3MFCN7O6F/Ananya+Subramani.jpeg Alumni_gallery Lexi Ringsby (BS, 2021) Current position: PhD student at Stanford University https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1598309291265-IWWPTZ325CY9EUU8BMJ9/Ananya+Subramani.jpeg Alumni_gallery Brendan Wirtz (BS, 2021) Current position: PhD student at Stanford University https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1625771601926-VOBHHB7Q7E9CMJYN4ZLE/image-asset.jpeg Alumni_gallery Joe Papp (PhD, 2020) Thesis title: “High voltage reactivity in lithium batteries“ B.S. University of Kentucky, 2015 NSF Graduate Research Fellow LinkedIn and Google Scholar Current position: CTO at Anthro Energy https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1597368161437-HM9ADMY96C3T7AK93DUX/Kristian+Knudsen.jpg Alumni_gallery Srinivasan Ramakrishnan (Postdoc, 2018-2020) B.Sc (Hons.) Chemistry, SSSIHL, 2010 M.Sc Chemistry, Indian Institute of Technology Madras, 2012 Ph.D. Chemistry, Stanford University, 2017 LinkedIn | Personal Website | CV Current Position: Assistant Professor of Chemistry at IIT, Bombay https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422150312985-7TGNSRG1AI7UDMJAVR0P/Sather.jpg Alumni_gallery Peter Dudenas (PhD, 2020) B.S. Penn State University, 2014 Primary Advisor: Adam Weber, LBNL Thesis title: Method development for polymer thin film characterization with applications in perfluorinated sulfonic acid polymers Current position: Postdoctoral researcher at NIST, Polymer Processing Group https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1486407381605-6UL906V14YEV5CDTPO7N/Kristian+Knudsen.jpg Alumni_gallery Kristian Bastholm Knudsen (Postdoc, 2016-2019) B.Sc. Aalborg University, 2010 M.Sc. Aalborg University, 2012 Ph.D. Technical University of Denmark, 2015 Postdoc. Technical University of Denmark, 2016 Visiting Scientist, Massachusetts Institute of Technology, 2016 LinkedIn and Google Scholar Current position: Product Developer at Unisense https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1423077994688-84OQS8WGY4LHNLKQPUZS/Campanile.jpg Alumni_gallery Kyle Diederichsen (PhD, 2019) Thesis title: “High transference number polymer-based electrolytes for lithium batteries“ B.S. University of Colorado, Boulder, 2014 Current position: Postdoc in Alan Hatton’s group at MIT. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1447879545408-JK5MAEC5JKE7IKHGBSPV/Gilman_Hall.jpg Alumni_gallery Erin Creel (PhD, 2019) Thesis title: “Shining a light on plasmonic photoelectrochemical carbon dioxide reduction“ NSF Graduate Research Fellow B.S. Sewanee-The University of the South, 2013 LinkedIn Current position: Postdoc in the Oak Ridge National Laboratory roll-to-roll manufacturing group. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1423160317013-5B7M2WNF4JWLRBLD3SHD/Campanile.jpg Alumni_gallery Eddy Zaia (PhD, 2019) NSF Graduate Research Fellow B.S. Columbia University, 2012 LinkedIn and Google Scholar https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1562626333309-RD9BY6HZUYH2EEBPLHF5/image.png Alumni_gallery Alex King (Amgen Summer Scholar, 2019) LinkedIn Current position: Chemical Engineering undergraduate at University of Michigan. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1505779689058-ER5X9D6OVMJB48R7FYPB/Byungchun+Park_Headshot.jpg Alumni_gallery Byungchun Park (Visiting Scholar, 2017-2019) B.S. Hanyang University, 2005 M.S. Hanyang University, 2008 Current position: Cathode material development, Battery R&D, LG Chem. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422149599787-Y36HWQDX0HCFEKE4G85O/Gilman_Hall.jpg Alumni_gallery Sara Renfrew (PhD, 2019) Thesis title: “Tracing Interfacial Reactivity of Lithium Transition Metal Oxides Through Outgassing” NDSEG Fellow https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1561764378745-PKX334NEKT7H58P35XH1/Sather.jpg Alumni_gallery Davis Perez (B.S., 2018) Current position: Stanford Chemistry graduate student https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422146631799-4DBCOJ0GN1CYUTTSJXJO/Meron.jpg Alumni_gallery Meron Tesfaye (PhD, 2019) Thesis title: “Understanding the Impact of Confinement on Ionomer Thin-film Transport Properties” Primary advisor: Adam Weber NSF Graduate Research Fellow https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1540244535912-8S0AC17WH340W8EWJA97/LouisID.jpg Alumni_gallery Louis Hartmann (Visiting Scholar, 2018) B.S. Technical University Munich, 2017 LinkedIn https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422146604400-TN8ALL1M22LZH4N3BLKY/Colin.jpg Alumni_gallery Colin Burke (PhD, 2018) Thesis title: "Electrolyte Engineering to Improve Capacity and Rechargeability in the Lithium-Oxygen Battery” Current employer: Exponent NASA NSTRF Fellow LinkedIn and Google Scholar https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1423087330486-S5VDCEWRA7AMVFEPGTEX/Sather.jpg Alumni_gallery Jessica Nichols (PhD, 2018) Thesis title: "Sodium-Oxygen and Magnesium Metal Electrochemistry for Energy Storage Applications” Current employer: Dow Chemical NSF Graduate Research Fellow LinkedIn and Google Scholar https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1533923825966-T85UDUSMPUDVJRRAWI3H/Rickey+Terrell+Headshot%5B3199%5D.JPG Alumni_gallery Rickey Terrell (Amgen Summer Scholar, 2018) Current Position: University of Cincinnati undergraduate LinkedIn https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1533923245169-FVJEM56EZIZVSFCR9YFN/HWKim_002.jpg Alumni_gallery Hyo Won Kim (Postdoc, 2015-2018) Current position: Assistant Professor at KENTECH, Korea https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1528846777434-M5I87BCKLNIMQG7F1IPP/matthew_liu_mccloskey_lab.JPG Alumni_gallery Matthew Liu (BS, 2018) Current position: PhD student at Stanford Chemical Engineering https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1516985520697-CO6N7GNWFF7RP46K6SIQ/RobertSengpiel_compressed.jpeg Alumni_gallery Robert Sengpeil (Visiting Scholar, 2017) Current position: RWTH Aachen University Graduate Student https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1539878103795-K42TOOBRDXUPGU6CRF8A/Picture_Nika_Mahne_w.JPG Alumni_gallery Nika Mahne (Visiting Scholar, 2017) Nika's doctoral thesis on ''Singlet Oxygen in Non-Aqueous Battery Chemistries'' (Dr.techn., Graz University of Technology, 2018) comprised her results compiled at the McCloskey lab on the electrochemical oxidation of lithium carbonate. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1505839436140-SG9JOGCDLPVIF37SZ602/Adrian+-+Headshot.jpg Alumni_gallery Adrian Davey (Amgen Summer Scholar, 2017) https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1475617935842-92UF0PV3YXFIHLO7DZKB/Hilda_Headshot.JPG Alumni_gallery Hilda Buss (PhD, 2017) Thesis title: "Design, Synthesis, and Characterization of Functional Materials for Battery Electrolyte and Marine Antifouling Applications" Current employer: Exponent NSF Graduate Research Fellow LinkedIn https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1473805972671-6JKEG8AD1ZK6LF4AXV9V/Youngsang%2BKim_edited.jpg Alumni_gallery Youngsang Kim (Postdoc, 2015-2017) Current employer: Lam Research LinkedIn   https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1519075938451-CC0QJXUVDEIPFEC3UFOC/Yihan_Headshot.jpg Alumni_gallery Yihan Zhang (BS, 2017) Chemical and Biomolecular Engineering https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1473911488004-Q65BOZR08PTOHAJW9JCI/IMG_2751+-+Copy.JPG Alumni_gallery Sophia Chan (BS, 2017) Current position: PhD student at Columbia U. Chemical Engineering NSF Graduate Research Fellow (starting fall 2017) https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1443743560654-FZZBNONU5KGERGD0WJEU/Gilman_Hall.jpg Alumni_gallery Keren Zhang (BS, 2017) Current position: PhD student at Georgia Tech Chemical Engineering https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422150312985-7TGNSRG1AI7UDMJAVR0P/Sather.jpg Alumni_gallery Christopher Dekmezian (BS, 2014-2016) Current position: Engineer at QuantumScape https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1488562882463-9A7WRG9FRNDUD7HHWJU7/Headshot+-+Jakob.jpg Alumni_gallery Jakob Asenbauer (Visiting Scholar, 2016) Current position: University of Regensburg Graduate Student https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1473910782624-BHPLJRTNIKJ5N3K1HSGU/Screen+Shot+2016-09-13+at+8.25.19+PM.png Alumni_gallery Howie Nguyen (Amgen Summer Scholar, 2016) Current position: Georgetown undergraduate https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1432228366155-B8F3C45D8XSSC6048Y3D/Francis.jpeg Alumni_gallery Francis Richey (Postdoc, 2014-2015) Current employer: EOS Energy Storage https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1454569841529-1LFT7A6FXV7VWVPJTFML/Gilman_Hall.jpg Alumni_gallery Burkhard Ohs (Visiting Scholar, 2015) RTWH Aachen https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1443743560654-FZZBNONU5KGERGD0WJEU/Gilman_Hall.jpg Alumni_gallery Charles Wan (Amgen Summer Scholar, 2015) Current position: Cornell undergraduate https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1432228511090-RH032NES93S79R15JLC6/Sather.jpg Alumni_gallery Jia Ji Lin (Amgen Summer Scholar, 2014) Post-lab position: NYU undergraduate http://www.mccloskeylab.com/new-gallery-1 daily 0.75 2023-06-26 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1612391228545-S8UG1VMB5MUZSWNHYNPD/Li_O2_website.png Research_Gallery Enabling ‘extreme‘ fast-charging of Li-ion batteries Representative publications: [Link], [Link] Despite recent growth, consumers are slow to adopt electric vehicles, in part due to long charging times. As a result, the U.S. Department of Energy has set an ambitious goal for designing a lithium ion battery (LIB) pack that can withstand a 200 mile charge in only 10 minutes. Our group is part of the DOE Vehicle Technologies Office XCEL Fast Charging program working towards this goal, specifically aiming to understand unique battery chemistry challenges that arise during fast charge. We have developed techniques to detect and quantify a degradation reaction known as ‘lithium plating’ that occurs at the graphite anode. These techniques include ex-situ mass spectrometry titrations (MST) of cycled electrodes, in-situ voltage and coulombic efficiency analysis, and in-operando impedance spectroscopy. With expertise in reliably detecting Li plating, we plan to a) continue developing additional techniques that could be applied in vehicles and b) move towards electrode and electrolyte composition engineering to design better batteries for fast-charging. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1612391228545-S8UG1VMB5MUZSWNHYNPD/Li_O2_website.png Research_Gallery Enabling ‘extreme‘ fast-charging of Li-ion batteries Representative publications: [Link], [Link] Despite recent growth, consumers are slow to adopt electric vehicles, in part due to long charging times. As a result, the U.S. Department of Energy has set an ambitious goal for designing a lithium ion battery (LIB) pack that can withstand a 200 mile charge in only 10 minutes. Our group is part of the DOE Vehicle Technologies Office XCEL Fast Charging program working towards this goal, specifically aiming to understand unique battery chemistry challenges that arise during fast charge. We have developed techniques to detect and quantify a degradation reaction known as ‘lithium plating’ that occurs at the graphite anode. These techniques include ex-situ mass spectrometry titrations (MST) of cycled electrodes, in-situ voltage and coulombic efficiency analysis, and in-operando impedance spectroscopy. With expertise in reliably detecting Li plating, we plan to a) continue developing additional techniques that could be applied in vehicles and b) move towards electrode and electrolyte composition engineering to design better batteries for fast-charging. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1475257293813-2GYBJ0UMTN5KVSKC3R5Y/Li-ion_Fig_website.png Research_Gallery The stability and performance of emerging Li-ion cathode materials Representative publications: [Link], [Link], [Link], [Link], [Link], [Link] The fast-growing electric-vehicle market has led to new challenges for state-of-the-art Li-ion battery cathodes due to the demand for increased energy density as well as the imminent supply issue of cobalt. New cathode chemistries that rely primarily on transition metals such as nickel and manganese have become an important goal to address these issues. Our lab is actively involved in various funded projects studying emerging cathode materials including structurally ordered nickel-rich layered oxides, partially cation-ordered spinel-like oxyfluorides, and cation-disordered rocksalts. The main drawback of these otherwise promising cathode materials is their long-term cycling instability. Our focus is to understand this limitation from two perspectives: cathode-electrolyte interfaces and bulk redox processes. Our lab utilizes our unique expertise in differential electrochemical mass spectrometry and a variety of specialized titrations to characterize in-situ outgassing, surface impurities, and bulk intermixed redox processes. With these advanced techniques, our goal is to provide clear correlations between material design, interface characteristics, deconvoluted redox capacities, and battery performance. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1612393291491-74EPKY6DH9G5Q2PEWAF9/PE_image_website.png Research_Gallery High Li ion transference number polymer electrolytes to enable high energy Li-ion batteries *Image (left) created by Dr. Julie Rorrer Representative publications: [Link], [Link], [Link], [Link], [Link], [Link] In typical liquid electrolytes, most of the ionic current is initially carried by the anion, with a lithium ion transference number (t) ranging from 0.1-0.4 (i.e., only 10-40% of the ionic current is carried by Li ions). As a result of this low t, and in combination with the consumption/formation of the electroactive Li ions at the battery cathode/anode, salt concentration gradients are established within the battery in order to maintain electroneutrality, deleteriously affecting the battery performance. Specifically, as a battery discharge proceeds, the ionic concentration within the porous battery cathode, where Li ions are consumed, continuously decreases until it reaches zero at some shallow depth within the electrode, limiting the ultimate electrode thickness. High t electrolytes could significantly reduce, or perhaps eliminate, concentration polarization at high discharge rates, enabling thicker electrodes to be used, which would increase the ratio of electrochemically active battery components to passive cell components (such as the electrolytes), thereby increasing the energy density of the cell, particularly at high current rates desirable for electric vehicles. Our group works to understand the effect of various polymer properties, both chemical and physical, on the electrode/electrolyte interfaces and the polymer conductivity, thereby allowing us to optimize electrolyte composition to impart low impedance and enhanced Li-ion battery performance. This work includes both experimental development and testing of polymer electrolyte systems, as well as molecular dynamics simulations of these systems to understand the physical phenomena underpinning their performance. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1541115396283-WLK7ZC33RLME5YPDCKFK/Li_O2_website.png Research_Gallery Fundamental electrochemistry of metal-air battery chemistries for ‘beyond Li-ion‘ applications Representative publications: [Link], [Link], [Link], [Link] The lithium-ion battery is a truly remarkable technology; one which has found commercial application in numerous devices requiring portable energy storage. However, through decades of development, Li-ion batteries are now reaching physical limits in terms of the amount of energy they can store per unit volume. Our research will broadly focus on new battery chemistries that have promise to improve upon the energy density of Li-ion batteries. Among the many alternatives being explored, metal-air batteries possess very high theoretical energy densities, but suffer from poor rechargeability and Coulombic efficiency. Our laboratory’s specific focus will be to assess, and then address, the shortcomings of metal-air batteries through a systematic approach involving state-of-the-art electrochemical and spectroscopic characterization. Current projects include fundamental characterization of Na-air batteries and newly proposed Li-CO2 battery chemistries. https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1422772154247-AP3PPHYGNFY9SJNV45N8/Li_O2_website.png Research_Gallery Fundamental electrochemistry of batteries 'beyond Li-ion', with a specific focus on metal-air chemistries Representative publications: [Link], [Link], [Link] The lithium-ion battery is a truly remarkable technology; one which has found commercial application in numerous devices requiring portable energy storage. However, through decades of development, Li-ion batteries are now reaching physical limits in terms of the amount of energy they can store per unit volume. Our research will broadly focus on new battery chemistries that have promise to improve upon the energy density of Li-ion batteries. Among the many alternatives being explored, metal-air batteries possess very high theoretical energy densities, but suffer from poor rechargeability and Coulombic efficiency. Our laboratory’s specific focus will be to assess, and then address, the shortcomings of metal-air batteries through a systematic approach involving state-of-the-art electrochemical and spectroscopic characterization. Current projects include novel electrolyte development for Li-air batteries, fundamental characterization of Na-air batteries, corrosion suppression of Mg metal anodes in aqueous electrolytes, and outgassing of high voltage Li-excess Li-ion battery electrodes. http://www.mccloskeylab.com/blog-five daily 0.75 2025-05-09 https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1367260450797-URGPGAJD819N3UVCWKKV/5254898599_c446ebc474_o.jpg Blog http://www.mccloskeylab.com/blog-five/2012/9/27/fermentum-fringilla-inceptos-rek6p monthly 0.5 2014-01-09 https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1367260192142-870QY02RYB540W5SR9WY/193636096_1f34d7a78d_o.jpg Blog - Aenean Leo Ligula Photo Credit: tiarescott https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1367260192125-RNOR66QWT6CGX5KMRZ0G/5970284850_68a8c7333e_o.jpg Blog - Aenean Leo Ligula Photo Credit: Webb Zahn http://www.mccloskeylab.com/blog-five/2013/4/21/vivamus-quis-mi-pww4t monthly 0.5 2013-04-29 http://www.mccloskeylab.com/blog-five/2012/10/3/malesuada-justo-dolor-elit-amet-rnymn monthly 0.5 2013-04-29 https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1367260134425-5TOJC1LW037IFTZO399D/Screen+Shot+2013-04-26+at+3.58.18+PM.png Blog - Etiam ut Purus Mattis Mauris View from the Bow http://www.mccloskeylab.com/blog-five/category/Our+Guests monthly 0.5 http://www.mccloskeylab.com/blog-five/category/On+Land monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Scuba monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Naval+Gazing monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Food monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Captain%27s+Log monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Family monthly 0.5 http://www.mccloskeylab.com/blog-five/category/Boat+Maintenance monthly 0.5 http://www.mccloskeylab.com/blog-five/category/One monthly 0.5 http://www.mccloskeylab.com/home-1 daily 1.0 2015-01-21 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1421644902075-2EMPLT6083VALKU8GOFQ/Campanile.jpg Home http://www.mccloskeylab.com/res daily 0.75 2015-02-01 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1421645106232-TXLHMAMFEOYRTHAMNGPL/Lab.jpg Research http://www.mccloskeylab.com/contact-us daily 0.75 2021-02-05 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1430161563931-YA55BV7JHQ54AABZ3EUN/Contact_website.png Contact http://www.mccloskeylab.com/pubs daily 0.75 2026-01-12 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/1435598699267-694A4NOX3OKI9YHD6BUT/FullSizeRender+%2814%29.jpg Publications http://www.mccloskeylab.com/peo daily 0.75 2026-03-19 https://images.squarespace-cdn.com/content/v1/54bc60d4e4b0fee4b02b93e6/ef82502f-af17-4523-a285-6c4ec8d2b46a/IMG_3713.JPG People http://www.mccloskeylab.com/read-me-five daily 0.75 2025-05-09 https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1376686207692-LRO3OMT4KGTOS9Q8WIRN/gBO0wXUBOBY-QkPZm8Lvg-I-ifill_2048.jpg Read Me https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1376581849029-XMY0369BNE3M724R2LNA/51b7353be4b049e6ffb2caaf.png Read Me https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1378827958933-4PFZPMQ2B5002HIZNKCA/BeeHive+%2820130910%29.jpg Read Me https://images.squarespace-cdn.com/content/v1/5016d42984ae3ecc9e018d91/1376581850041-71T9N2T854LTY451D3G4/51b75f4be4b0b1ab92015ea0.png Read Me