化学镀镍包覆提高尖晶石LiMn_2O_4的高温性能  

Elevated temperature performance of spinal LiMn_2O_4 with electroless plating nickel

作　　者：许名飞[1] 李新海[1] 张云河[1] 吴显明[1] 

机构地区：[1]中南大学冶金科学与工程学院冶金化学研究所,湖南长沙410083

出　　处：《电源技术》2004年第2期88-90,96,共4页Chinese Journal of Power Sources

摘　　要：尖晶石LiMn2O4是最有希望代替钴酸锂的锂离子蓄电池正极材料,高温下容量衰减严重是其得以广泛应用的瓶颈。采用化学镀镍包覆方法对尖晶石LiMn2O4进行了表面改性。通过X射线衍射(XRD)和扫描电子显微镜(SEM)等方法对改性后的尖晶石表面进行了研究。电化学测试结果表明化学镀镍包覆方法能大幅度提高Li-LiMn2O4电池的高温性能。As an attractive cathode material for Li-ion battery, spinal LiMn2O4 cycling performance at elevated temperature was urgent. The modification of spinal LiMn2O4 with electroless plating nickel was studied. The surface of spinal LiMn2O4 coated with nickel was studied by SEM and XRD. The results show that the modification enhances greatly the elevated temperature performance of spinal LiMn2O4.

关 键 词：锂离子蓄电池 正极材料 化学镀镍包覆 尖晶石LIMN2O4 高温性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]