期刊
JOURNAL OF POWER SOURCES
卷 400, 期 -, 页码 325-332出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.08.005
关键词
Lithium ion battery; ZIF-67 based separator; Thermal stability; Polypropylene separator
资金
- National Natural Science Foundation of China (NSFC) [21301102]
The separator is a crucial part of lithium ion battery, such as preventing internal short-circuit and offering ion conducting routes. However, conventional separators are usually based on polymer materials, which show the low thermal stability and poor electrolyte wettability, thus greatly restricting the electrochemical performance of lithium ion battery, especially for high-temperature safety. In this study, zeolitic imidazolate framework-67 (ZIF-67) was employed as separator via direct coating onto the surface of LiNi0.5Co0.2Mn0.3O2 electrode through a facile blade-coating technique. Comparing with the conventionally used polypropylene (PP) separator, the new ZIF-67 based separator features superior electrolyte uptake (154%), higher ionic conductivity (0.00164 S cm(-1)) and thermal stability. Notably, at a high temperature of 55 degrees C, the cell with ZIF-67 based separator exhibits nearly 2 times higher capacity retention than the PP separator (ZIF-67: 61.20% vs PP: 35.09%). In view of its advantages, the ZIF-67 based separator shows significant potential in the design of safe lithium ion batteries.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据