This work reveals the mechanism of stress rise in the battery during the discharge process by combining numerical calculations with experimental results, which are conducive to further research on the effect of stress on battery performance.
研究团队想研究这一现象，并找出为什么在锂离子电池放电过程中会出现应力反弹。 研究团队使用实验测量和改进的单粒子模型来详细分析应力上升。 他们发现，在 (去)锂化期间阳极材料的大体积变化和锂离子在活性颗粒中的固相扩散的严格限制导致了不均匀的浓度分布并引起异常的应力变化。 阳极材料的扩散系数对这一过程有着至关重要的影响。 此外，研究者发现循环过程中粒子的破裂有助于锂离子扩散通道和扩散系数的增加。 这使得应力特性呈现出规律性的变化，可以作为预测电池健康状态的一种手段，降低预测的复杂度。 这项研究具有重要意义，因为它为锂离子电池放电过程中出现的应力反弹提供了新的认识。
Lithium-ion batteries especially with silicon-based anodes, exhibit high energy density but experience huge volume changes during charge and discharge. Research shows that multiple types of lithium-ion batteries undergo stress rise during the discharge process, which seems to contradict the sense
This work combines experiments and simulations to systematically study the stress change behavior during the discharge process, revealing the influence of different cathode materials and different aging conditions of the same material on the stress change pattern of the battery, which can be used
中国科学技术大学 先进电源实验室--中文主页-
Revealing the mechanism of stress rebound during discharging in lithium-ion batteries 发布时间： 点击次数： 影响因子： 8.907 发表刊物： Journal of
中国科学技术大学Lili, Gong、谈鹏等最新成果：揭示锂离子电池
Explore content About the journal Publish with us Revealing the mechanism of stress rebound during discharging in lithium-ion batteries Li X.; Zhang Z.; Gong L.; Zhang Z.;
Revealing the mechanism of stress rebound during
Lithium-ion batteries especially with silicon-based anodes, exhibit high energy density but experience huge volume changes during charge and discharge.
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中国科学技术大学 先进电源实验室--中文主页-
Revealing the mechanism of stress rebound during discharging in lithium-ion batteries 发布时间： 点击次数： 影响因子： 8.907 发表刊物： Journal of
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中国科学技术大学 Advanced Battery Group--Home--Xueyan Li
Revealing the mechanism of stress rebound during discharging in lithium-ion batteries This work combines experiments and simulations to systematically study the stress
Journal of Energy Storage | Vol 72, Part C, 25 November
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Journal of Energy Storage | Vol 72, Part C, 25 November
Read the latest articles of Journal of Energy Storage at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature
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Revealing the mechanism of stress rebound during discharging in
Request PDF | On Feb 1, , Xueyan Li and others published Revealing the mechanism of stress rebound during discharging in lithium-ion batteries | Find, read and cite all the research
Numerical Simulation and Experimental Study of
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