中文摘要：

以H3PO4、FeSO4·7H2O 和 LiOH H2O 为原料，采用水热法以 Ni（CH3COO）2·4H2O 为镍源、葡萄糖为碳源，合成锂离子电池正极材料 LiFe1–xNixPO4/C（x = 0，0.02，0.05，0.08）。采用 X 射线衍射、扫描电子显微镜对材料晶体结构和表观形貌进行表征，利用充放电测试技术对其电化学性能进行测定。结果表明：掺杂适量的 Ni2＋可以减小材料的晶胞体积，提高材料的比电容和循环性能。当 Ni2＋的掺杂量为 5.0%时，LiFe0.95Ni0.05PO4/C 材料在 0.1 C 倍率下的首次放电比电容可达到 152.8mA·h/g，经过 20 次循环后的比电容保持率在 97.5%以上。

英文摘要：

Lithium-ion battery cathode material LiFe1-xNixPO4/C （x = 0, 0.02, 0.05 and 0.08） was prepared with H3PO4, FeSO4·7H2O, LiOH·H2O, Ni（CH3COO）2·4H2O and glucose by a hydrothermal method. The crystalline structure, morphology of particles and electrochemical performance were characterized by X-ray diffraction, scanning elcetron microscopy and charge-discharge test technique, respectively. The results show that the doping of Ni2＋ can reduce the lattice volume and improve the capacity and cycling performance of the material. When the doping of Ni2＋ is 5.0%, the first discharge of LiFe0.95Nio.05PO4/C is 152.8 mA-h/g at 0.1 C, and the capacity maintaines to be 97.5% after 20-cycle.