电池2018，Vol.48Issue(1)：45-48,4.DOI:10.19535/j.1001-1579.2018.01.012
水分对LiNi0.5Co0.2Mn0.3O2/Li4Ti5O12电池高温性能的影响
Effect of moisture on high temperature performance of LiNi0.5Co0.2Mn0.3O2/Li4Ti5O12 battery
摘要
Abstract
A 8 Ah soft pack Li-ion battery was prepared,using LiNi0.5Co0.2Mn0.3O2 as ternary cathode material and lithium titanium oxide(Li4Ti5O12) as anode material.The influence of moisture (0.030％ and 0.015％) on the high temperature performance of the battery was investigated,when the battery was backed 24 h and 36 h respectively before injection.When the moisture was 0.030％,the initial Coulombic efficiency of the battery was lower and the polarization was larger than the one with the moisture of 0.015％.After keeping at 55 ℃ for 7 d,the capacity retention and recovery ratios of the battery with the moisture of 0.030％ were 98.5％ and 99.4％,respectively,while the one with the moisture of 0.015％ were 99.5％ and 100.1％.The capacity retention ratios of the batteries with the moistures of 0.030％ and 0.015％ after 2 000 cycles at 3 C were 87.8％ and 89.4％,respectively.The lower moisture could enhance the storage and cycling performance of the battery at high temperature.关键词
钛酸锂(Li4Ti5O12)/水分/高温/搁置/循环Key words
lithium titanium oxide(Li4Ti5O12)/moisture/high temperature/storage/cycle分类
信息技术与安全科学引用本文复制引用
杨尘,汪涛,王金龙,熊明松..水分对LiNi0.5Co0.2Mn0.3O2/Li4Ti5O12电池高温性能的影响[J].电池,2018,48(1):45-48,4.基金项目
国家科技部“863”计划课题(2015AA034601) （2015AA034601）
