以球孔碳为模板,通过一步法和两步法合成了纳米磷酸铁锂。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和扣电测试表征材料的性能。相比一步法,两步法合成的磷酸铁锂晶粒更小,各项电化学性能更好。结果显示:两步法磷酸铁锂的放电比容量在1C放电比容量为136mAh/g,循环后,比容量无明显衰减;而一步法磷酸铁锂1C放电比容量为108.9mAh/g,循环后比容量迅速衰减到100mAh/g以下。晶粒大小对于磷酸铁锂的电化学性能具有关键影响,而模板有利于控制磷酸铁锂纳米颗粒的形貌和尺寸。
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