电源技术2025，Vol.49Issue(2)：323-330,8.DOI:10.3969/j.issn.1002-087X.2025.02.009
NCM811/SiC@石墨锂离子电池硅负极热稳定性能的研究
Thermal stability of silicon-based anode in NCM811/SiC@graphite lithium-ion battery
冀亚娟 1官群 1谢英朋 1赵瑞瑞1
作者信息
- 1. 惠州亿纬锂能股份有限公司,广东 惠州 516006
- 折叠
摘要
Abstract
The heat release sequence and heat contribution of each component in the fully charged NCM811/SiC@graphite lithium-ion battery system were studied by DSC-TG method.The thermal re-action temperature is the lowest when the fully charged silicon-based anode coexists with the electro-lyte,namely the first thermal trigger component,and the quantity of heat release of the fully charged cathode and anode and electrolyte is the largest.The thermal reaction experiments of the anode,an-ode+electrolyte,anode+cathode and anode+cathode+electrolyte under different SOC were designed.It's found that there is still heat release reaction of the anode+cathode+electrolyte under the un-charged state,signifying that the thermal runaway of battery can not be completely eliminated.In ad-dition,the characteristics of gas production of the fully charged silicon-base anode mixing with single solvent electrolyte were studied after high temperature storage.The gas production rate of the FEC-based electrolyte in coexistence with the fully charged silicon-based anode is the highest after high temperature storage.It is speculated that the FEC-based electrolyte may have the worst thermal sta-bility to the fully charged silicon-base anode.关键词
锂离子电池/硅基负极/热稳定性/热量贡献Key words
lithium-ion battery/silicon-based anode/thermal stability/heat contribution分类
信息技术与安全科学引用本文复制引用
冀亚娟,官群,谢英朋,赵瑞瑞..NCM811/SiC@石墨锂离子电池硅负极热稳定性能的研究[J].电源技术,2025,49(2):323-330,8.
