锰酸锂的SEI膜研究  

Study on SEI Film of Lithium Manganate

作　　者：赵洪[1] 王坤[1] 张玥[1] 刘大凡[1] 安峰[1] 张晓行[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《广州化工》2013年第10期75-76,共2页GuangZhou Chemical Industry

基　　金：天津市自然科学基金(No:11JCYBJC08000)

摘　　要：通过循环伏安(CV)、电化学交流阻抗谱(EIS)及恒流充放电研究锰酸锂表面的成膜性能及电化学性能。结果表明,锰酸锂表面的SEI膜在电池首次充电过程中就开始形成,充放电循环至3周时,SEI膜得到较大程度的修补和完善。但循环到一定次数后,SEI膜会逐渐变厚,直接影响电池的电化学性能。The formation of solid electrolyte interphase film on lithium manganate was investigated by cyclic voltammetry（CV）, electrochemical impedance spectroscopy （EIS） and constant- current charge -discharge. It was found that the formation of SEI film on the surface of lithium manganatehas started during the initial charge cycle. The SEI film was repaired and improved after 3 cycles. But after cycle to a certain number of times, SEI film would gradually be thickening and directly influenced the electrochemical properties of the battery.

关 键 词：锂离子电池 锰酸锂 SEI膜 电化学阻抗谱(EIS) 

分 类 号：TM912.9[电气工程—电力电子与电力传动]