Electrochemical performance of LiFePO4/C used polyaniline as carbon precursor
In this paper,LiFePO4/C was prepared using polyaniline as carbon precursor by solid-state chemical reaction.The samples were characterized by X-ray powder diffraction (XRD),scanning electron microscopy (SEM) and constant current charge-discharge cycling test.XRD results indicated LiFePO4 had well-fined olivine type structure and without finding any amorphous phase corresponding to polyainline.The surface area tests showed that the as-prepared had bigger surface area,when the amount of polyaniline up to 12% in the precursor,comparing with the powder prepared using carbon black as carbon source.The prepared powder had the best initial discharge capacity of 141.7mAh/g.However,the cycling capacity retention rate only maintained 92 % over 10 cycles,which may be correlated with bigger surface area of the powder.
LiFePO4 solid-state chemical reaction X-ray diffraction electrochemical properties
Liu Aifang Yin Zhoulan Lei Lei
School of Chemistry and Chemical Engineering, Central South UniversityChangsha, 410083, China Pleiades Battery Manufacturing Co.,Ltd, Suzhou, 215123,China
国际会议
上海
英文
105-105
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）