Extreme fast charging of commercial Li-ion batteries via combined thermal switching and self-heating approaches

Yuqiang Zeng, Buyi Zhang, Yanbao Fu, Fengyu Shen, Qiye Zheng, Divya Chalise, Ruijiao Miao, Sumanjeet Kaur, Sean D. Lubner, Michael C. Tucker, Vincent Battaglia, Chris Dames and Ravi S. Prasher ()
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Yuqiang Zeng: Lawrence Berkeley National Laboratory
Buyi Zhang: Lawrence Berkeley National Laboratory
Yanbao Fu: Lawrence Berkeley National Laboratory
Fengyu Shen: Lawrence Berkeley National Laboratory
Qiye Zheng: Lawrence Berkeley National Laboratory
Divya Chalise: Lawrence Berkeley National Laboratory
Ruijiao Miao: Lawrence Berkeley National Laboratory
Sumanjeet Kaur: Lawrence Berkeley National Laboratory
Sean D. Lubner: Lawrence Berkeley National Laboratory
Michael C. Tucker: Lawrence Berkeley National Laboratory
Vincent Battaglia: Lawrence Berkeley National Laboratory
Chris Dames: Lawrence Berkeley National Laboratory
Ravi S. Prasher: Lawrence Berkeley National Laboratory

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract The mass adoption of electric vehicles is hindered by the inadequate extreme fast charging (XFC) performance (i.e., less than 15 min charging time to reach 80% state of charge) of commercial high-specific-energy (i.e., >200 Wh/kg) lithium-ion batteries (LIBs). Here, to enable the XFC of commercial LIBs, we propose the regulation of the battery’s self-generated heat via active thermal switching. We demonstrate that retaining the heat during XFC with the switch OFF boosts the cell’s kinetics while dissipating the heat after XFC with the switch ON reduces detrimental reactions in the battery. Without modifying cell materials or structures, the proposed XFC approach enables reliable battery operation by applying

Date: 2023
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DOI: 10.1038/s41467-023-38823-9

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