A facile synthesis of non-aqueous LiPO_(2)F_(2) solution as the electrolyte additive for high performance lithium ion batteries  

作　　者：Weimin Zhao Fucheng Ren Qizhang Yan Haodong Liu Yong Yang 

机构地区：[1]College of Cheical Engineering and Safety,Binzhou University,Binzhou 256503,China [2]State Key Laboratory for Physical Chemisiry of Solid Surfaces,and Department of Chemistry,College of Cchemistry and Chemical tngineering Ximen Uriversity,Xiammen 36I005,China [3]Department of Nanoengineering,University of California San Diego,La Jolla 92093,United States

出　　处：《Chinese Chemical Letters》2020年第12期3209-3212,共4页中国化学快报（英文版）

基　　金：National Natural Science Foundation of China(Nos.21935009,21761132030 and 21621091);National Key Research and Development Program of China(No.2018YFB0905400);the Doctoral Research Foundation of Binzhou University(No.2016Y06)。

摘　　要：Constructing a reliable and favorable electrode-electrolyte interface is crucial to utilize the exceptional energy storage capability in commercial lithium-ion batteries.Here,we report a facile synthesis approach for the lithium difluorophosphate(LiPO_(2)F_(2))solution as an effective film-forming additive via direct adding the Li_(2)CO_(3) into LiPF6 solution at 45℃.Benefiting from the significantly reduced interface resistance(RSEI)and charge transfer impedance(Rct)of both the cathode and anode by adding the prepared LiPO_(2)F_(2)solution into a baseline electrolyte,the cycling performance of the graphite||LiNi_(0.5)Mn_(0.3)Co_(0.2)O_(2) pouch cell is remarkably improved under all-climate condition.

关 键 词：Lithium difluorophosphate(LiPO_(2)F_(2)) SOLUTION Electrolyte additives Electrode-electrolyte interface Synthesis Li-ion batteries 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ131.11[化学工程—无机化工]