包埋镍酸锂高温循环性能研究  

Cyclic performance of the coated LiNiO_2 at elevated temperature

作　　者：万新华[1] 刘莎[1] 连芳[1] 刘庆国[1] 

机构地区：[1]北京科技大学固体电解质研究室,北京100083

出　　处：《电池》2004年第3期157-158,共2页Battery Bimonthly

摘　　要：用LiCoO2 包埋镍酸锂作为锂离子电池正极材料 ,组装成AA型电池 ,在 4 2 0～ 2 75V和充放电电流为 1C的条件下 ,对其 5 5℃、 2 5℃循环性能与钴酸锂AA型电池 5 5℃循环性能进行了对比研究。在 5 5℃下循环 5 0次后 ,包埋镍酸锂的放电比容量仍在 161mAh/g左右 ,容量保持率高达 91%以上 ,XRD测试表明Cyclic performance of AA size Li-ion batteries assembled using coated LiNiO_2 as cathode materialshad been studied between 4.20V and 2.75V with 1 C rate at 55℃,and compared with the batteries cycled at 25℃ and the batteries using LiCoO_2 cycled at 55℃ under the same conditions. Coated LiNiO_2 presented approximately 161mAh/g of specific discharge capacity and the capacity retention was over 91% after 50 cycles at 55℃,XRD tests showed the material still maintained its original structure.

关 键 词：锂离子 电池 正极材料 包埋镍酸锂 高温循环性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]