Magnetron sputtering deposition of silicon nitride on polyimide separator for high-temperature lithium-ion batteries

作     者：Can Liao Wei Wang Junling Wang Longfei Han Shuilai Qiu Lei Song Zhou Gui Yongchun Kan Yuan Hu Can Liao;Wei Wang;Junling wang;Longfei Han;Shuilai Qiu;Lei Song;Zhou Gui;Yongchun Kan;Yuan Hu

作者机构：State Key Laboratory of Fire ScienceUniversity of Science and Technology of ChinaHefei 230026AnhuiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第5期

页      面：1-10页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(51704269 and 51573173) Fundamental Research Funds for the Central Universities(WK2320000037) 

主　　题：Polyimide Magnetron sputtering deposition Lithium-ion batteries High temperature Safety 

摘      要：To date,lithium-ion batteries are becoming increasingly significant in the application of portable devices and electrical vehicles,and revolutionary progress in theoretical research and industrial application has been ***,the commercial polyolefin separators with unsatisfying electrolytes affinity and poor thermal stability have extremely restricted the further application of lithium-ion batteries,especially in the high-temperature *** this work,magnetron sputtering deposition technique is employed to modify the commercial polyimide separator by coating silicon nitride on both *** sputtering deposition modified polyimide(MSD-PI)composite separator shows high thermal stability and ionic *** importantly,compared with the cells using Celgard separator,the cells with MSD-PI separator exhibit superior electrochemical performance,especially long-term cycle performance under high temperature environment,owing to the high thermal conductivity of surface Si3 N4 ***,lithium-ion batteries with MSD-PI separator are capable of improving thermal safety and capacity retention,which demonstrates that magnetron sputtering deposition technique could be regarded as a promising strategy to develop advanced organic/inorganic composite separators for high-temperature lithium-ion batteries.