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以化学镀(ELP)和真空热分解(VTD)工艺制得了LiFePO4/Ag复合材料,采用X射线衍射、扫描电镜对样品进行了表征,同时对样品进行了交流阻抗、循环伏安和恒流充放电等电化学性能测试.结果表明,与纯LiFe-PO4相比,复合材料的首次不可逆容量有所降低,比容量增加.真空热分解所制得的银颗粒更小且分布更均匀.该复合材料在0.2C下首次放电容量为143.1mAh/g,库仑效率为90.6%;在1C下循环30次后仍能释放出116.6mAh/g的可逆容量.

参考文献

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