由LiH₂PO₄和FeC₂O₄.2H₂O作原料、柠檬酸为碳源，用水溶-蒸发法制备了LiFePO₄/C正极样品. 采用X射线衍射（XRD）、扫描电镜（SEM）和透射电镜（TEM）分析、观察样品. 用充放电曲线和电化学交流阻抗（EIS）谱图测试LiFePO₄/C电极. 结果表明，700 ^oC焙烧的LiFePO₄/C样品（碳量3.03%，by mass）结晶度高，无杂相，颗粒粒径100 nm，其表面包覆约5 nm碳层. 该电极0.5C、2C、5C和10C（1C = 170 mA.g^-1）倍率放电其比容量分别为148.2 mAh.g^-1、142.4 mAh.g^-1、127.4 mAh.g^-1和108.5 mAh.g^-1，循环寿命曲线稳定.

The LiFePO₄/C samples have been synthesized via an aqueous solution-evaporation route with LiH₂PO₄, FeC₂O₄.2H₂O as raw materials and citric acid as a carbon source. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to analyze structure and morphology of the samples. The electrochemical performances of the LiFePO₄/C cathodes were characterized by charge/discharge cures and electrochemical impedance spectroscopy (EIS). The results show that the LiFePO₄/C sample, calcined at 700 °C and contained 3.03% (by mass) carbon, exhibited a highly pure crystalline phase with the primary particles sizes of 100 nm. The surfaces of those particles were covered by a carbon layer of 5 nm in thickness. At the rates of 0.5C, 2C, 5C, and 10C, where 1C corresponds to 170 mA.g^-1, the discharge capacities of 148.2, 142.7, 127.4, and 108.5 mAh.g^-1, were delivered, respectively, with the perfect cycling stabilities.