中文摘要：

通过化学原位聚合法成功制备了包覆良好的LiFePO4/聚噻吩（PTP）复合材料。采用傅里叶红外光谱（FTIR）和透射电镜（TEM）分别对PTP与LiFePO4之间发生相互作用及包覆情况进行系统地研究。采用电化学阻抗谱及恒电流充放电法研究了复合材料的电化学性能。结果表明,当PTP含量为9.6%时,能在LiFePO4的表面形成均匀的包覆层,试样具有最佳的电化学性能,C/12倍率下首次放电容量为158.2mAh/g,具有优良的循环性能及倍率性能。

英文摘要：

LiFePO4/PTP composites were prepared successfully by in-situ chemical polymerization. The interaction and coating condition between LiFePO4 and PTP were investigated systematically by Fourier infrared spectroscopy （FTIR） and transmission electron microscopy （TEM）. The electrochemical performances of composites were tested by electrochemical impedance spectroscopy, galvanostatic charge and discharge methods. The experimental results show that uniform coating layers were formed applied 9.6% PTP. It possesses the best electrochemical performance, good rate and cycling capability. Its initials discharge capacity is 158.2mAh/g at C/12 rate.