The feasibility for natural graphite to replace artificial graphite in organic electrolyte with different film-forming additives

作     者：Shaojun Niu Guobin Zhu Kai Wu Honghe Zheng Shaojun Niu;Guobin Zhu;Kai Wu;Honghe Zheng

作者机构：College of EnergySoochow UniversitySuzhou 215006China Contemporary Amperex Technology LimitedNingde 352100China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第56卷第4期

页      面：58-69页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Key Research and Development Program of China(2016YFB0100400) the National Natural Science Foundation of China(21875154,22179090) 

主　　题：Lithium ion batteries Natural graphite Electrolyte additive Solid electrolyte interphase 

摘      要：The feasibility for natural graphite(NG)to replace artificial graphite(AG)in organic electrolytes with different additives are *** the strong film-forming additives contributes to form robust solid electrolyte interphase(SEI)film on graphite particle surface,great differences in gas evolution,lithium inventory loss and other side reactions are *** bis(oxalato)borate(Li BOB)and fluoroethylene carbonate(FEC)are found more effective and the combination shows to be more *** the optimized electrolyte,natural graphite anode exhibits excellent long-term cycling *** 800 cycles at high temperature,the capacity retention is comparable to that using artificial *** mechanisms for the capacity-fading of the full cells with AG and NG anode are investigated by ICP,SEM and polarization *** results shows that NG electrode consumes more active lithium due to the rough surface and larger volume *** rapid capacity-fading in the initial 100 cycles is related to the instability of the SEI film aroused from large volume *** systematic analysis is inspiriting for the development of high performance lithium ion batteries with reduced cost.