中文摘要：

利用正交实验L3^3（9）探讨磷酸铁锂正极的制备工艺对不同倍率下电极工作性能的影响，并对电解液的匹配性进行研究。采用不同活性物质、导电剂和粘结剂配比制成磷酸铁锂正极，应用不同电解液组装成锂离子电池，选用17mA·g^-1和170mA·g^-1的工作电流密度对电池进行充放电循环测试。研究结果表明，在17mA·g^-1倍率充放电条件下，最佳电极制备工艺是：活性物质、导电剂和粘结剂的质量百分比为85：7：8，匹配的电解液为LiPF6/EC-DEC-DMC（体积比1：1：1，浓度1mol·L^-1）：在170mA·g^-1倍率充放电条件下，活性物质、导电剂和粘结剂的最佳质量百分比为80：12：8，与其相匹配的电解液为LiPF6/EC-DMC（体积比1：1，浓度1mol·L^-1）。

英文摘要：

The influences of the recipes for preparing the LiFePO4 cathode and the compositions of the electrolyte on the electrochemical performance of the prepared cathodes were studied by using the L3^3（9） Latin orthogonal experiment method. The LiFePO4 cathodes with different ratios of active material to conductor and to binder were prepared, and the charge-discharge performances of the prepared LiFePO4 cathodes were tested under the cycling current densities of 17 mA·g^-1 and 170 mA·g^-1 separately. The results show that, for preparing LiFePO4 cathode, the best ratio of active material to conductor and to binder is 85：7：8 （in weight） for charge-discharge circulation working at current density of 17 mA·g^-1, and is 80：12：8 for charge-discharge circulation working at current density of 170 mA·g^-1, As to the electrolytes used with the electrode mentioned above, the 1 mol·L^-1 LiPF6 solution with the solvent composition of EC ： DMC： DEC = 1：1：1 （volume ratio） is more suitable for the cells cycling at 17 mA·g^-1, and the 1 mol·L^-1 LiPF6 solution with the solvent composition ofEC ： DMC = 1：1 is better for the cell cycling at 170 mA·g^-1.