采用高温固相法合成LiFePO4/C材料,采用XRD和SEM对该材料性能进行表征.结果表明:采用不同原料合成的LiFePO4/C材料都具有规整的橄榄石型结构.原料对比实验表明,葡萄糖为碳源优于碳黑,草酸亚铁优于三价铁源;以葡萄糖为碳源、草酸亚铁为铁源合成的材料形貌规则,分散性好.电化学测试表明,以葡萄糖为碳源、草酸亚铁为铁源得到的LiFePO4/C材料0.1C时首次放电比容量达到152.2 mA·h/g,大电流密度下性能良好,3C时其首次放电比容量为140.8 mA·h/g,20次循环后仅衰减1.2%.
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