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电化学  2010 

磷酸钒锂溶胶-凝胶制备及电化学性能研究

, PP. 450-454

Keywords: 磷酸钒锂,正极材料,锂离子电池,溶胶-凝胶法

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Abstract:

以柠檬酸为螯合剂和碳源,应用溶胶-凝胶法制备锂离子电池正极Li3V2(PO4)3/C.XRD、SEM及恒电流充放电等测试表明,所得样品经800℃、12h焙烧后具有单一晶相结构,粒度相对较小,分布均匀.0.1C、0.5C和1C放电首次比容量分别为153.0、143.1和130.6mAh.g-1,50次循环容量效率分别为93.1%,85.4%和77.3%,充电效率达80%,放电电压较高.

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