电源技术2024，Vol.48Issue(6)：1133-1136,4.DOI:10.3969/j.issn.1002-087X.2024.06.024
构建CEI膜提升氯化镍正极热电池放电性能
Improving discharge performance of thermal battery with nickel chlo-ride cathode by constructing CEI film
唐军 1孟剑 1唐立成 1罗莉 1潘志鹏 1王京亮1
作者信息
- 1. 贵州梅岭电源有限公司特种化学电源全国重点实验室,贵州遵义 563003
- 折叠
摘要
Abstract
A electrochemical interface(CEI)thin film between the cathode and the separator was con-structed by using carbon materials to avoid the direct contact between the cathode and separator ma-terials.The elements on the surface of the separator material after discharge were characterized and analyzed by using energy dispersive spectroscopy(EDS).The results show that the electrical perfor-mance of the cell with multi walled carbon nanotubes constructed CEI film improves significantly at a low current density of 100 mA/cm2.Compared to 1#batteries without CEI film,the discharge ca-pacity of 3#batteries with CEI-1 powder effectively increases by more than 40%.With a cut-off volt-age of 2.0 V for the cell,the discharge time is 824 s,the discharge specific capacity reaches 994 A·s/g,and the utilization rate of the cathode material reaches 89%.The effective capacity of the cathode material is fully utilized.Therefore,using multi walled carbon nanotube materials to construct CEI thin films between the cathode and separator can effectively prevent the mutual melting of the cath-ode and separator materials,and avoid the short circuit in the later stage of the battery.关键词
CEI膜/正极材料/电化学性能/互熔Key words
CEI film/cathode materials/electrochemical performance/mutual melting分类
信息技术与安全科学引用本文复制引用
唐军,孟剑,唐立成,罗莉,潘志鹏,王京亮..构建CEI膜提升氯化镍正极热电池放电性能[J].电源技术,2024,48(6):1133-1136,4.
