分别以柠檬酸、葡萄糖和蔗糖为碳源,采用球磨与碳热还原结合法制备了锂离子电池正极材料Li3V2(PO4)3/C.采用TG-DTA分析确定了合成过程的反应机理.通过XRD、SEM及恒电流充放电等测试研究了碳源对产物物理及电化学特性的影响.结果表明,碳源的选择对产物形貌和电化学性能影响较大.不同碳源制备的材料都具有单一相的Li3V2(PO4)3晶体结构,以柠檬酸为碳源制备的磷酸钒锂综合电化学性能较好,0.1C和1C条件下,首次放电容量分别为151.0 mAh·g-1和131.6 mAh·g-1,50次循环后容量保持率为95.0％和96.6％.
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