电源技术2025，Vol.49Issue(9)：1840-1845,6.DOI:10.3969/j.issn.1002-087X.2025.09.007
三元正极材料结构失效对电池安全稳定性的影响
Insight into the influence of structure degradation on battery safety stability for ternary cathode
张燕 1张瑞强 2初银晓 3孟凡波 4胥婷 2孙晓 2郭健4
作者信息
- 1. 国网山东省电力公司电力科学研究院,山东济南 250002
- 2. 山东中实易通集团有限公司,山东济南 250002
- 3. 华电龙口发电有限公司,山东烟台 265799
- 4. 国网山东综合能源服务有限公司,山东济南 250013
- 折叠
摘要
Abstract
The poor thermal stability and detrimental gas release characteristics of ternary cathode materials significantly affect the safety performance of lithium ion batteries.Aimed at exploring the intrinsic relationship between performance failure,structural failure,and safety stability of the ter-nary cathode,the in-situ electrochemical mass spectrometry and differential scanning calorimetry analyses were conducted on the aged(A-NCM)and fresh(O-NCM)LiNi0.5Co0.2Mn0.3O2 cathodes to in-vestigate their safety stability.The results show that,under an upper cutoff voltage of 4.7 V,signifi-cant CO2 and H2 harmful gas signals were detected for A-NCM during electrochemical cycling.Addi-tionally,when the thermal decomposition reaction between the electrode and the electrolyte was initi-ated,A-NCM electrode would release more heat,further increasing the battery temperature and pos-ing safety hazards.This research helps to construct the relationship between"battery aging and bat-tery safety",providing a theoretical basis for intelligent battery safety management.关键词
锂离子电池/层状正极材料/热分解/结构失效/安全性能Key words
lithium ion battery/layered cathode/thermal decomposition/structure failure/safety performance分类
信息技术与安全科学引用本文复制引用
张燕,张瑞强,初银晓,孟凡波,胥婷,孙晓,郭健..三元正极材料结构失效对电池安全稳定性的影响[J].电源技术,2025,49(9):1840-1845,6.
