电源技术2011，Vol.35Issue(5)：506-509,4.
添加剂Li2CO3对锂离子电池石墨负极界面特性影响
Influence of Li2CO3 additive on interface features for lithium-ion batteries graphite anode
摘要
Abstract
The influence of Li2CO3 additive in 1 mol/L UPF(e)/(EC+DEC+DMC)(volume ration 1∶1∶ 1) electrolyte on graphite anode interface properties for lithium ion batteries wes researched by cyclic voltammetery (CV) and electrochemical impedance spectroscopy(ElS). The results show Li2CO3 additive can effectively reduce reduction and decomposition of EC in the electrolyte at 0.75 V, inhibit the formation of alkyl lithium carbonate at 0.6 V ,maintain the electrolyte stability, reduce the loss of Li ion,and improve the cycle performance of the lithium-ion battery.ln 3 V open circuit potential, Li2CO3 has no effect on the contact resistance and lithium-ion diffusion in the graphite electrode. Adding Li2O3 to the electrolyte can make SEI film of graphite anode only form within 0.8-1.0 V. The ElS titting testify that Li2CO3 additive lowers the SEI resistance and charge transfer resistance.关键词
锂离子电池/添加剂碳酸锂/循环伏安/电化学阻抗谱Key words
lithium ion batteries/ additive Li2CO3/ cyclic voltammetry/ electrochemical impedance spectroscopy分类
信息技术与安全科学引用本文复制引用
崔永丽,袁铮,田雷雷,庄全超,孙智..添加剂Li2CO3对锂离子电池石墨负极界面特性影响[J].电源技术,2011,35(5):506-509,4.基金项目
中央高校基本科研业务费专项资金资助(2010QNB04,2010QNB05) （2010QNB04,2010QNB05）
