全固态薄膜锂离子二次电池的制备及性能分析  

Preparation and performance analysis of all-solid-state thin film lithium-ion secondary batteries

作　　者：陈涛[1] 耿利群[1] 任岳[1] 朱仁江[1,2] 

机构地区：[1]重庆师范大学物理与电子工程学院,重庆400047 [2]重庆大学物理学院,重庆400030

出　　处：《电源技术》2014年第4期618-620,626,共4页Chinese Journal of Power Sources

基　　金：重庆市科技攻关计划项目(CSTC2009AB6138);重庆长安新能源汽车有限公司资助项目(CSTC2010AB6110);重庆市教委科研项目(KJ110618)

摘　　要：利用磁控溅射技术在不锈钢衬底上制备全固态薄膜锂离子二次电池.通过用SEM来观测单层薄膜材料的形貌,电化学工作站测定单层薄膜的交流阻抗谱,蓝电电池测试系统表征薄膜电池的电化学性能.研究表明,在电位为4.0～0.3V之间,该薄膜电池具有良好的充放电性能,经过200次循环之后,充放电容量相对趋于平稳,放电比容量基本稳定在4.0 μAh/cm2左右;以10μA恒定电流进行充放电循环测试时,首次放电比容量达到5.4 μAh/cm2,循环寿命则达到1 000次以上.By magnetron sputtering technology, all-solid-state thin film lithium-ion secondary batteries were prepared on a stainless steel substrate. The morphology of the monolayer film materials was observed by SEM, the AC impedance spectrum of the monolayer film materials was measured by an electrochemical workstation, and electrochemical performance of thin film battery was determined by a charge-discharge instrument. The electrochemical studies show that the thin film battery has a good charge-discharge characteristic in the voltage range of 4.0-0.3 V. After the 200 cycles, the charge-discharge capacity is relatively stabilized, and the discharge specific capacity is substantially stabilized at about 4.0 μAh/cm2; by the charge-discharge cycle test of a constant current 10 μA, the first discharge specific capacity is 5.4 μAh/cm2 and this battery can be cycled more than 1 000 cycles.

关 键 词：全固态薄膜锂离子二次电池 磁控溅射技术 制作 性能分析 

分 类 号：TM912.9[电气工程—电力电子与电力传动]