EFFECT OF CARBON AMOUNT ON THE PROPERTY OF SOL-GEL SYNTHESIZED LiMnPO4/C
LiMnPO4/C composite cathode materials had been synthesized by sol-gel method with following heat-treatment under air. The crystal structures and morphologies of these materials were investigated by XRD and ESEM. The electrochemical performances were measured by galvanostatic charge-discharge tests. The effect of carbon content on the crystal structure, morphology and electrochemical performance of LiMnPO4 were discussed in detail. The galvanostatic charge-discharge results showed that the electrochemical performance of LiMnPO4/C was improved by elevating carbon amount to a certain degree, the sample with initial conductive carbon content of 10wt% showed the best performance, when tested at 0.02 C rate between 2.8 V-4.4 V, its initial discharge capacity reached 121.6 mAh/g、73.1 mAh/g and 75.6 mAh/g for the sample sintered at 400,500 and 600 respectively.
YURONG ZHANG YANYAN ZHAO
College of Chemistry and Chemical Engineering, Fuzhou University,Fuzhou,Fujian 350108, China
国际会议
The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)
武汉
英文
605-611
2010-05-02（万方平台首次上网日期，不代表论文的发表时间）