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

Engineering and Technology

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

Y. Zeng, B. Zhang, et al.

This groundbreaking research conducted by Yuqiang Zeng and colleagues at Lawrence Berkeley National Laboratory unveils a novel approach to enhance extreme fast charging (XFC) in lithium-ion batteries. By actively managing self-generated heat, the study demonstrates a transformative method to achieve <15 min charging and 1 h discharging, meeting stringent US Department of Energy targets—all without structural modifications to the batteries.

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Playback language: English
Abstract
The mass adoption of electric vehicles is hindered by the inadequate extreme fast charging (XFC) performance of commercial high-specific-energy lithium-ion batteries (LIBs). This paper proposes regulating the battery's self-generated heat via active thermal switching to enable XFC. Retaining heat during XFC boosts cell kinetics, while dissipating heat afterward reduces detrimental reactions. The approach enables reliable battery operation with <15 min charge and 1 h discharge, meeting US Department of Energy XFC targets, without modifying cell materials or structures. The feasibility of integrating this approach into a commercial battery thermal management system is also demonstrated.
Publisher
Nature Communications
Published On
Jun 03, 2023
Authors
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, Ravi S. Prasher
Tags
electric vehicles
extreme fast charging
lithium-ion batteries
thermal management
battery performance
energy storage
charging kinetics

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