以Fe3+为铁源,采用控制结晶技术合成了纳米FePO4·xH2O,将FePO4·xH2O于500℃热处理4h后得到纳米FePO4前驱体,然后通过碳热还原在不同温度下煅烧合成橄榄石结构的纳米LiFePO4/C样品.采用差热/热重、X射线衍射、扫描电镜、比表面测试、电化学性能测试等分析测试方法对纳米FePO4·xH2O、FePO4前驱体及不同煅烧温度下制得的纳米LiFePO4/C样品进行表征.研究结果表明,700℃烧结10h合成LiFePO4/C样品的粒径在40～100 nm左右,比表面积为79.8 m2/g; 700℃煅烧合成样品在电压2.5～4.2 V,倍率为0.1C、1C、5C、10C、15C时的放电比容量分别达到156.5、134.9、105.8、90.3和80.9 mAh/g,具有较好的倍率性能；样品还表现出较好的容量保持率.
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