LiFePO_4/Li_4Ti_5O_(12)锂离子电池的制备及研究  

Preparation and research of LiFePO_4/Li_4Ti_5O_(12) Li-ion batteries

作　　者：陈京才[1,2] 崔燕 夏信德 童叶翔[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275 [2]广州市鹏辉电池有限公司,广东广州511483

出　　处：《电池工业》2010年第1期30-34,共5页Chinese Battery Industry

基　　金：广州市科技支撑项目(2008Z1-D261)

摘　　要：使用磷酸铁锂(LiFePO4)和钛酸锂(Li4Ti5O12)做正、负极活性材料,制备锂离子电池,并测试其性能。用三电极法考察不同配比时正负电极充放电电位的变化,并据此确定了电池中正负极的容量配比。性能测试结果表明,所制备的锂离子电池具有优异的循环稳定性,容量发挥好。正负极容量配比1.4时,18650圆柱电池负极钛酸锂的容量发挥为160mAh/g。A LiFePO4 （positive）/Li4Ti5O12 （negative） Li-ion battery was prepared in this paper. And its perfromance was tested. The charge/discharge potentials of the positive and negative electrodes of the prepared cell were investigated with three-electrode cell. Based on the results, the capacity matching between positive and negative in the LiFePO4/LLTi5O12 cell system were determined. The experiment results showed that the cell with higher matching exhibited better capacity than the one with lower matching, and Li4Ti5O12 had a specific capacity of 160 mAh/g discharged at 1 C with 1.4 matching.

关 键 词：LIFEPO4 锂离子电池 LI4TI5O12 

分 类 号：TM912.9[电气工程—电力电子与电力传动]