Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries
The electrochemical kinetics of battery electrodes at the single-particle scale are measured as a function of state-of-charge, and interpreted with the aid of concurrent transmission X-ray microscopy (TXM) of the evolving particle microstructure. An electrochemical cell operating with near-picoamper...
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| Format: | Article |
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Royal Society of Chemistry (RSC)
2018
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| Online Access: | http://hdl.handle.net/1721.1/116897 https://orcid.org/0000-0002-8270-3396 https://orcid.org/0000-0002-5519-1946 https://orcid.org/0000-0002-2211-2164 https://orcid.org/0000-0002-0833-7674 |
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| author | Tsai, Ping-Chun Wen, Bohua Wolfman, Mark Choe, Min-Ju Pan, Menghsuan Sam Su, Liang Thornton, Katsuyo Cabana, Jordi Chiang, Yet-Ming |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Tsai, Ping-Chun Wen, Bohua Wolfman, Mark Choe, Min-Ju Pan, Menghsuan Sam Su, Liang Thornton, Katsuyo Cabana, Jordi Chiang, Yet-Ming |
| author_sort | Tsai, Ping-Chun |
| collection | MIT |
| description | The electrochemical kinetics of battery electrodes at the single-particle scale are measured as a function of state-of-charge, and interpreted with the aid of concurrent transmission X-ray microscopy (TXM) of the evolving particle microstructure. An electrochemical cell operating with near-picoampere current resolution is used to characterize single secondary particles of two widely-used cathode compounds, NMC333 and NCA. Interfacial charge transfer kinetics are found to vary by two orders of magnitude with state-of-charge (SOC) in both materials, but the origin of the SOC dependence differs greatly. NCA behavior is dominated by electrochemically-induced microfracture, although thin binder coatings significantly ameliorate mechanical degradation, while NMC333 demonstrates strongly increasing interfacial reaction rates with SOC for chemical reasons. Micro-PITT is used to separate interfacial and bulk transport rates, and show that for commercially relevant particle sizes, interfacial transport is rate-limiting at low SOC, while mixed-control dominates at higher SOC. These results provide mechanistic insight into the mesoscale kinetics of ion intercalation compounds, which can guide the development of high performance rechargeable batteries. |
| first_indexed | 2024-09-23T15:05:13Z |
| format | Article |
| id | mit-1721.1/116897 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:05:13Z |
| publishDate | 2018 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1168972022-09-29T12:38:04Z Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries Tsai, Ping-Chun Wen, Bohua Wolfman, Mark Choe, Min-Ju Pan, Menghsuan Sam Su, Liang Thornton, Katsuyo Cabana, Jordi Chiang, Yet-Ming Massachusetts Institute of Technology. Department of Materials Science and Engineering Tsai, Ping-Chun Wen, Bohua Pan, Menghsuan Sam Su, Liang Chiang, Yet-Ming The electrochemical kinetics of battery electrodes at the single-particle scale are measured as a function of state-of-charge, and interpreted with the aid of concurrent transmission X-ray microscopy (TXM) of the evolving particle microstructure. An electrochemical cell operating with near-picoampere current resolution is used to characterize single secondary particles of two widely-used cathode compounds, NMC333 and NCA. Interfacial charge transfer kinetics are found to vary by two orders of magnitude with state-of-charge (SOC) in both materials, but the origin of the SOC dependence differs greatly. NCA behavior is dominated by electrochemically-induced microfracture, although thin binder coatings significantly ameliorate mechanical degradation, while NMC333 demonstrates strongly increasing interfacial reaction rates with SOC for chemical reasons. Micro-PITT is used to separate interfacial and bulk transport rates, and show that for commercially relevant particle sizes, interfacial transport is rate-limiting at low SOC, while mixed-control dominates at higher SOC. These results provide mechanistic insight into the mesoscale kinetics of ion intercalation compounds, which can guide the development of high performance rechargeable batteries. 2018-07-11T15:47:56Z 2018-07-11T15:47:56Z 2018-03 2018-01 2018-07-11T15:10:26Z Article http://purl.org/eprint/type/JournalArticle 1754-5692 1754-5706 http://hdl.handle.net/1721.1/116897 Tsai, Ping-Chun et al. “Single-Particle Measurements of Electrochemical Kinetics in NMC and NCA Cathodes for Li-Ion Batteries.” Energy & Environmental Science 11, 4 (2018): 860–871 © 2018 Royal Society of Chemistry https://orcid.org/0000-0002-8270-3396 https://orcid.org/0000-0002-5519-1946 https://orcid.org/0000-0002-2211-2164 https://orcid.org/0000-0002-0833-7674 http://dx.doi.org/10.1039/c8ee00001h Energy & Environmental Science Creative Commons Attribution-NonCommercial 3.0 Unported https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry |
| spellingShingle | Tsai, Ping-Chun Wen, Bohua Wolfman, Mark Choe, Min-Ju Pan, Menghsuan Sam Su, Liang Thornton, Katsuyo Cabana, Jordi Chiang, Yet-Ming Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title | Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title_full | Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title_fullStr | Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title_full_unstemmed | Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title_short | Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries |
| title_sort | single particle measurements of electrochemical kinetics in nmc and nca cathodes for li ion batteries |
| url | http://hdl.handle.net/1721.1/116897 https://orcid.org/0000-0002-8270-3396 https://orcid.org/0000-0002-5519-1946 https://orcid.org/0000-0002-2211-2164 https://orcid.org/0000-0002-0833-7674 |
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