正极配方设计对锂离子电池寿命的影响研究  

Influence of cathode electrode formula design on cycle life performance of LiFePO_4 battery

作　　者：吴静[1] 王炜娜[1] 李锦[2] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384 [2]天津力神电池股份有限公司,天津300384

出　　处：《电源技术》2013年第6期947-949,共3页Chinese Journal of Power Sources

摘　　要：通过采用四探针等手段对极片的电阻率、浸润性等进行了研究分析,并对高比能量电池的正极配方进行了优化。测试结果显示:A型号磷酸铁锂材料及其所制备的18650试验电池性能更为优越,特选取A作为高比能量电池正极活性物质;在原有高压实极片电极配方基础上添加了一定量的导电碳纤维,提高了极片的电导率及浸润性,进而提高了高比能电池的循环寿命。The resistivity and infiltration of electrode plate was researched through four-probe method and other analytical method, and the positive electrode formula was optimized. The result show that type A LiFePO4 material and 18650 batteries which adopted type A material exhibit more excellent performance. The addition of VGCF to original high compact electrode formula improves the conductivity and infiltration of electrode plate, and enhances cycle life of the high specific energy battery.

关 键 词：磷酸铁锂 正极配方 高比能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]