电源技术2017，Vol.41Issue(8)：1118-1120,1126,4.
高电压电解液对富锂锰动力电池性能的影响
Influence of high voltage electrolyte on performance of lithium-rich manganese power battery
毛敏 1余新喜 1王庆杰 1高桂红1
作者信息
- 1. 贵州梅岭电源有限公司,贵州遵义563003
- 折叠
摘要
Abstract
The new lithium-rich manganese-based material xLi2MnO3·(1-x)LiMO2(0＜ x ＜1,M=Mn、Co、Ni) which was composed of Li2MnO3 and LiMO2 had become a new generation cathode material of power lithium ion battery,due to its excellent performances of high capacity,high voltage,high energy density,low cost and safety etc.Effect of three different kinds of high voltage electrolyte (short for Ⅰ、Ⅱ、]][) on the first time charge-discharge,storage performance,rate discharge and low temperature performance of lithium-rich manganese-based power battery was studied.The results show that the first time charge-discharge rates of battery made of different kinds of electrolyte are all small (about 68％),the charge-discharge rate increases to 96％ at the second week and 98％ at the third week,which is 30％ more than the first time.After 30 days of storage,battery made of electrolyte Ⅰ self-discharge of large,the open circuit voltage decreased by 0.66 v,and the discharge capacity decreased by 206.1 mAh.At 0.2 C and 3 C,battery made of electrolyte Ⅲ had good rate discharge performance,its discharge capacities were obviously larger than the other two,discharge capacity of battery made of electrolyte]]Ⅲ decreased less at 0 ℃C than at room temperature.So electrolyte Ⅲ had more excellent electrochemical performance.关键词
富锂锰基材料/动力电池/电化学性能/高电压/电解液Key words
lithium-rich manganese-based material/power battery/electrochemical performance/high voltage/electrolyte分类
信息技术与安全科学引用本文复制引用
毛敏,余新喜,王庆杰,高桂红..高电压电解液对富锂锰动力电池性能的影响[J].电源技术,2017,41(8):1118-1120,1126,4.
