Mechanism for capacity fading of 18650 cylindrical lithium ion batteries
18650型柱状锂离子电池的容量衰减机理(英文)作者机构:School of Metallurgy and Environment Central South University Changsha 410083 China
出 版 物:《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))
年 卷 期:2017年第27卷第7期
页 面:1602-1607页
核心收录:
学科分类:0808[工学-电气工程] 0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程(可授工学、理学学位)] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学]
基 金:Project(51574287)supported by the National Natural Science Foundation of China Project(2015CX001)supported by the Innovation-driven Plan in Central South University,China
主 题:18650 lithium ion battery capacity fading cycle performance
摘 要:The mechanism for capacity fading of18650lithium ion full cells under room-temperature(RT)is *** capacity loss of18650cells is about12.91%*** cells after cycles are analyzed by XRD,SEM,EIS and *** measurement shows an overall increase in the cell resistance upon ***,it also presents anincreased charge-transfer resistance(Rct)for the cell cycled at *** test shows that the reversibility of lithium ioninsertion/extraction reaction is *** capacity fading for the cells cycled can be explained by taking into account the repeatedfilm formation over the surface of anode and the side *** products of side reactions deposited on separator are able toreduce the porosity of *** a result,the migration resistance of lithium ion between the cathode and anode would beincreased,leading the fading of capacity and potential.