聚合物锂离子电池负极电化学性能研究

Research on electrochemical characteristics of negative electrode in Polymer lithium ion battery

制备了聚合物锂离子电池用负极 ,对其首次充放电效率、比容量、不同放电倍率下放电性能进行了测试 .首次充放电容量分别为 340 m A· h·g- 1和 310 m A·h· g- l,库仑效率可达 91% .以锂锰氧为正极组装了聚合物锂离子电池 ,通过测试表明制备的聚合物锂离子电池具有较好的循环性和大电流放电能力 .所制负极可应用于聚合物锂离子电池中 .

The negative electrode in the polymer lithium ion battery is prepared,and the initial charge and discharge efficiency,specific capacity and discharge capability at different discharge rates are tested The lithium/SPE/carbon half cell with a charge capacity of 340 mA·h/g and a discharge capacity of 310 mA·h/g has a high coulombic efficiency of 91% With LiMnO 4 as the positive electrode,the polymer lithium ion battery packcd in a plastic bag has good cycling performance and higher rate capability ,A composite carbon electrode prepared with graphitic carbon shows promise as an anode with the polymer electrolyte in a lithium ion polymer battery