In order to improve the charge transfer rate and Li⁺ diffusion coefficient of LiFePO₄ (LFP), the material was surface treated with polyacrylonitrile/polyaniline (PAN/PANI). PAN/PANI polymers were synthesized by a self-assembly process, and LFP@PAN/PANI were prepared by a wet-coating process. LFP@PAN/PANI exhibits superior electrochemical performance compared to bare LFP, with a discharge capacity of 3088.97 mAh at low temperature and high rate condition (−20 °C, 26650-type cylindrical battery, 5 C rate), and a relatively high low-temperature discharge plateau (2.68 V). Electrochemical impedance spectroscopy (EIS) proves that the Li⁺ diffusion coefficient of LFP@PAN/PANI is an order of magnitude higher than that of bare LFP. The above performance is improved because the polar cyano group of the polymer can interact with the electrolyte and Li⁺, and the polyaniline makes the polymer have high conductivity. Therefore, the composite of the two polymers endows LFP with excellent Li⁺ activity and high conductivity.

为了提高LiFePO ₄ (LFP)的电荷转移速率和Li ^{+扩散系数，对该材料进行了聚丙烯腈/聚苯胺(PAN/PANI)表面处理。}PAN/PANI聚合物是通过自组装工艺合成的，LFP@PAN/PANI是通过湿涂工艺制备的。与裸LFP相比，LFP@PAN/PANI表现出更优异的电化学性能，在低温高倍率条件下（-20℃，26650型圆柱电池，5C倍率）放电容量为3088.97 mAh，相对较高的低-温度放电平台 (2.68 V)。电化学阻抗谱（EIS）证明Li ⁺LFP@PAN/PANI 的扩散系数比裸 LFP 高一个数量级。上述性能得到改善是因为聚合物的极性氰基可以与电解质和Li ⁺相互作用，而聚苯胺使聚合物具有高导电性。因此，两种聚合物的复合赋予了LFP优异的Li ⁺活性和高导电性。