Highly reinforce the interface stability using 2-Phenyl-1H-imidazole-1-sulfonate electrolyte additive to enhance the high temperature performance of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/graphite batteries  

作　　者：Xin He Yiting Li Wenlian Wang Xueyi Zeng Huilin Hu Haijia Li Weizhen Fan Chaojun Fan Jian Cai Zhen Ma Junmin Nan 

机构地区：[1]School of Chemistry,South China Normal University,Guangzhou 510006,Guangdong,China [2]Guangzhou Tinci Materials Technology Co.,Ltd.,Guangzhou 510760,Guangdong,China

出　　处：《Journal of Energy Chemistry》2023年第5期10-22,I0001,共14页能源化学（英文版）

基　　金：financially supported by the Scientific and Technological Plan Projects of Guangzhou City(202103040001)。

摘　　要：This work develops 2-Phenyl-1H-imidazole-1-sulfonate(PHIS)as a multi-functional electrolyte additive for H2O/HF scavenging and film formation to improve the high temperature performance of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/graphite batteries.After 450 cycles at room temperature(25℃),the discharge capacity retentions of batteries with blank and PHIS-containing electrolyte are 56.03%and 94.92%respectively.After 230 cycles at high temperatures(45℃),their values are 75.30%and 88.38%respectively.The enhanced electrochemical performance of the batteries with PHIS-containing electrolyte is supported by the spectroscopic characterization and theoretical calculations.It is demonstrated that this PHIS electrolyte additive can facilitate the construction of the electrode interface films,remove the H2O/HF in the electrolyte,and improve the electrochemical performance of the batteries.This work not only develops a sulfonate-based electrolyte but also can stimulate new ideas of functional additives to improve the battery performance.

关 键 词：LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/graphite battery High temperature performance H_(2)O/HF scavenger 2-Phenyl-1H-imidazole-1-sulfonate Electrolyte additive 

分 类 号：TQ131.11[化学工程—无机化工] TM91[电气工程—电力电子与电力传动]