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本文研究了软包三元锂离子电池在高温存储过程中的容量衰减机理。借助内置参比电极，测量存储不同时间的全电池和正负极充放电曲线。通过微分容量（IC）曲线、微分电压（DV）曲线分析和电压重构法研究了正负极的衰减过程及其对全电池衰减的贡献。结果显示，高温60℃存储48天的软包三元锂离子电池正极、负极活性物质的质量和活性锂的含量分别损失6.32%、11.04%和7.02%。本研究使用的方法可推广应用于不同类型的锂离子电池中。
Abstract：This paper investigates the capacity degradation mechanism of pouch ternary lithium-ion batteries during high-temperature storage. With the help of built-in reference electrode, the charge/discharge curves of the full cell and positive and negative electrodes stored for different times were measured. Through incremental capacity(IC), differential voltage(DV) curves analysis, and voltage reconstruction methods, We systematically studied the attenuation process of positive and negative electrodes and their contribution to the full cell. The results show that after 48 days of storage at 60 ℃, the losses of positive and negative active materials and the active lithium in the pouch ternary lithium-ion battery are 6.32%, 11.04%, and 7.02%, respectively.This method can be extended to various types of lithium-ion batteries.
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基本信息:
DOI：10.19996/j.cnki.ChinBatlnd.2026.02.003
中图分类号:TM912
引用信息:
[1]陈丹丹,夏玉佳,宋林霏.锂离子电池高温存储衰减机理研究[J].电池工业,2026,30(02):131-136.DOI:10.19996/j.cnki.ChinBatlnd.2026.02.003.
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