溶胶凝胶法制备高性能LiMn_2O_4薄膜  

LiMn_2O_4 film with excellent performance prepared by a sol-gel method

作　　者：杜柯[1] 张宏[1] 解晶莹[1] 杨军[2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海交通大学,上海200030

出　　处：《电池》2003年第5期279-280,共2页Battery Bimonthly

基　　金：国家自然科学基金资助项目(50172058)

摘　　要：用溶胶凝胶法在Pt片上采用慢速旋转涂布工艺制备LiMn2O4薄膜。该膜表面呈非致密态,厚度在200nm左右,晶体颗粒大小约为100nm。实验表明:该膜具有较大的放电容量,电流密度在0.01mA/cm2时,容量可达到75μAh/cm2·μm;可承受1mA/cm2的电流密度放电,容量仍有49μAh/cm2·μm。该膜循环性能良好,400次循环后容量没有衰减。LiMn2O4 thin films were fabricated on platinum plate by slowing spincoating method.The thickness of loose film fabricated by this method was about 200?nm and the particle size was about 100?nm.This film had great electrochemical performance,the discharge capacity at 0.01?mA/cm2 was 75?μAh/cm2·μm and 49?μAh/cm2·μm at 1?mA/cm2.The cycle ability of this film was good, no capacity fade was found after 400 cycles.

关 键 词：薄膜锂电池 溶胶凝胶法 制备 高性能LiMn2O4薄膜 磁控溅射法 电化学性能 

分 类 号：TM910.4[电气工程—电力电子与电力传动]