电源技术2011，Vol.35Issue(3)：255-258,4.
锂离子电池LiFePO4正极材料电化学性能改进
Electrochemical performance improvement of LiFePO4 cathode material
摘要
Abstract
In order to improve the electrochemical performance of LiFePO4, LiFePO4/C composite was synthesized via solid-state reaction with three types of carbon sources: acetylene black, citric acid and sucrose. The structure and electrochemical properties of LiFePO4/C composite were characterized by XRD, SEM, CV test and galvanostatic charge and discharge. The results indicate that LiFePO4/C composite prepared with sucrose as the carbon source exhibits excellent charge-discharge properties. At the discharge rate of 0.2 C, the initial discharge capacity of LiFePO4/C was 109.4, 130.4 mAh/g and 140.4 mAh/g with the acetylene black, citric acid and sucrose as carbon sources respectively at room temperature. With the different contents of sucrose, the performance of LiFePO4/C has obvious distinction. When adding carbon for 5％, the material has the highest discharge capacity of 154.3 mAh/g at 0.2 C at room temperature.关键词
LiFePO4/C正极材料/锂离子电池/乙炔黑/柠檬酸/蔗糖/碳包覆Key words
LiFePO4/C cathode material/ lithium-ion rechargeable batteries/ acetylene black/ citric acid/ sucrose/carbon coating分类
信息技术与安全科学引用本文复制引用
王武林,刘兴泉,王亮,张真,何泽珍..锂离子电池LiFePO4正极材料电化学性能改进[J].电源技术,2011,35(3):255-258,4.基金项目
河南省新乡市群力电源材料有限公司与新乡市天力能源材料有限公司的资助(H04010301W0309119) （H04010301W0309119）
