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电化学  2012 

复合材料xLiFePO4?yLi3V2(PO4)3的合成及电化学性能(英文)

, PP. 31-36

Keywords: 锂离子电池,复合物,掺杂,xLiFePO4?yLi3V2(PO4)3

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Abstract:

采用固相法合成了不同比例的xLiFePO4?yLi3V2(PO4)3复合物.利用XRD、SEM和电化学测试仪等分析方法表征了所有样品的特性.结果表明,样品0.95LiFePO4?0.05Li3V2(PO4)3以0.2C的充放电倍率放电时具有162.7mAh/g的电化学容量,同时该样品表现出了较其它样品更优异的循环稳定性和更良好的导电性能,不同倍率下循环60周后,其容量保持率高达98.7%.颗粒细小的尺寸和均一的分布使得样品0.95LiFePO4?0.05Li3V2(PO4)3具有良好的电化学性能.

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