摘要
以Fe3+盐为铁源,采用溶胶-凝胶法制备了锂离子电池正极材料LiFePO4,用XRD、SEM、恒流充放电和交流阻抗方法研究了样品的结构、形貌和电化学性能。样品0.1C首次放电容量达到131 mAh/g,经10次循环后,容量保持率为96%。采用溶胶-凝胶法合成的LiFePO4,抑制了循环过程中电化学反应阻抗的增加。
Li-ion battery cathode material LiFePO4 was prepared by sol-gel method with Fe（ Ⅲ ） salt as Fe source. The structure, morphology and electrochemical performance of the samples were characterized by XBD, SEM, galvanostatic charge-discharge and AC impedance methods. The initial capacity of the sample reached 131 mAh/g at 0.1 C.After 10 cycles, the capacity retention rate was 96%. The electrochemical reaction resistance of LiFePO4 synthesized by sol-gel method was suppressed at cycle process.
出处
《电池》
CAS
CSCD
北大核心
2006年第1期52-53,共2页
Battery Bimonthly
