Identifying the limiting electrode in lithium ion batteries for extreme fast charging
Abstract
Lithium ion batteries that are capable of extreme fast charging (XFC) are highly desirable to accelerate adoption of electric vehicles (EVs). To identify the rate limiting factors for XFC, here we used both half cells and symmetric cells to investigate the fast charging behavior of the cathode and anode separately. The symmetric cells enabled accurate measurements of charge transfer at each electrode without complications from counter electrodes. The battery materials and electrode design were comparable to the state-of-the-art for EV cells. Under these conditions, the graphite anode is the rate limiting electrode for fast charging in NMC811/Graphite pouch cells. The effective N/P ratio falls below 1.0 at high charging rates, which also causes Li plating. Finally, the use of symmetric cells in this study provides new insights to identify the limiting electrode in Li-ion batteries, especially those designated for extreme fast charging applications.
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); ORNL Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1481444
- Alternate Identifier(s):
- OSTI ID: 1479738
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Published Article
- Journal Name:
- Electrochemistry Communications
- Additional Journal Information:
- Journal Name: Electrochemistry Communications Journal Volume: 97 Journal Issue: C; Journal ID: ISSN 1388-2481
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; symmetric cell; Li-ion battery; extreme fast charging (XFC); Ni-rich cathode; NMC811; electric vehicles
Citation Formats
Mao, Chengyu, Ruther, Rose E., Li, Jianlin, Du, Zhijia, and Belharouak, Ilias. Identifying the limiting electrode in lithium ion batteries for extreme fast charging. Netherlands: N. p., 2018.
Web. doi:10.1016/j.elecom.2018.10.007.
Mao, Chengyu, Ruther, Rose E., Li, Jianlin, Du, Zhijia, & Belharouak, Ilias. Identifying the limiting electrode in lithium ion batteries for extreme fast charging. Netherlands. https://doi.org/10.1016/j.elecom.2018.10.007
Mao, Chengyu, Ruther, Rose E., Li, Jianlin, Du, Zhijia, and Belharouak, Ilias. Sat .
"Identifying the limiting electrode in lithium ion batteries for extreme fast charging". Netherlands. https://doi.org/10.1016/j.elecom.2018.10.007.
@article{osti_1481444,
title = {Identifying the limiting electrode in lithium ion batteries for extreme fast charging},
author = {Mao, Chengyu and Ruther, Rose E. and Li, Jianlin and Du, Zhijia and Belharouak, Ilias},
abstractNote = {Lithium ion batteries that are capable of extreme fast charging (XFC) are highly desirable to accelerate adoption of electric vehicles (EVs). To identify the rate limiting factors for XFC, here we used both half cells and symmetric cells to investigate the fast charging behavior of the cathode and anode separately. The symmetric cells enabled accurate measurements of charge transfer at each electrode without complications from counter electrodes. The battery materials and electrode design were comparable to the state-of-the-art for EV cells. Under these conditions, the graphite anode is the rate limiting electrode for fast charging in NMC811/Graphite pouch cells. The effective N/P ratio falls below 1.0 at high charging rates, which also causes Li plating. Finally, the use of symmetric cells in this study provides new insights to identify the limiting electrode in Li-ion batteries, especially those designated for extreme fast charging applications.},
doi = {10.1016/j.elecom.2018.10.007},
journal = {Electrochemistry Communications},
number = C,
volume = 97,
place = {Netherlands},
year = {Sat Dec 01 00:00:00 EST 2018},
month = {Sat Dec 01 00:00:00 EST 2018}
}
https://doi.org/10.1016/j.elecom.2018.10.007
Web of Science
Figures / Tables:
Works referencing / citing this record:
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