The Li (tri-(4-carboxyphenyl) amine) (Li-TCPA₂) doped polypyrrole (PPy-Li-TCPA₂) composites were successfully prepared by in-situ chemical oxidation using pyrrole and Li-TCPA₂ as raw materials. The structure, morphology, electrochemical properties of prepared materials were characterized by fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), specific surface area test (BET), scanning electron microscopy (SEM), cyclic voltammogram (CV) and electrochemical impedance spectra (EIS), respectively. Also, the charge-discharge properties of the prepared composites were studied by galvanostatic charge-discharge testing. The results demonstrated that as-prepared composite material exhibited a reversible redox process at 2.0–4.0 V. And the discharge specific capacity for PPy-Li-TCPA₂ (2:1) and PPy-Li-TCPA₂ (6:1) are 50.4 mAh·g⁻¹ and 63.7 mAh·g⁻¹ as measured at 30 mA·g⁻¹ between 2.0 and 4.0 V, while PPy-Li-TCPA₂ (4:1) exhibited the discharge specific capacity of 91.1 mAh·g⁻¹, which were remarkably higher than that of the pure PPy (29.5 mAh·g⁻¹) under the same experimental conditions. At the same time, PPy-Li-TCPA₂ (4:1) has improved rate performance and stable cycleability. The excellent electrochemical properties are attributed to the introduction of Li-TCPA₂ as dopant, which improved the electrical conductivity and the redox activity of PPy. Furthermore, the resulted well-dispersed particle structure of the composite as well as its improved specific surface area for doped PPy facilitated to the contact of the electrolyte with the active material, leading to the increased utilization ratio of active material and the enhanced electrochemical performances.

通过吡咯和Li-TCPA ₂原位化学氧化法成功制备了Li（三（4-羧基苯基）胺）（Li-TCPA ₂）掺杂的聚吡咯（PPy-Li-TCPA ₂）复合材料。作为原料。通过傅立叶变换红外光谱（FTIR），热重分析（TGA），X射线衍射（XRD），比表面积测试（BET），扫描电子显微镜（SEM）表征了所制备材料的结构，形态，电化学性能。循环伏安图（CV）和电化学阻抗谱（EIS）。另外，通过恒电流充放电试验研究了制备的复合材料的充放电性能。结果表明所制备的复合材料在2.0-4.0 V.而对于聚吡咯励TCPA的放电比容量表现出可逆的氧化还原处理₂（2：1）和聚吡咯励TCPA ₂（6：1）是50.4 mAh·g ^-1和63.7 mAh·g ^-1在2.0和4.0 V之间的30 mA·g ^-1下测得，而PPy-Li-TCPA ₂（4：1）的放电比容量为91.1 mAh·g ^-1，明显高于纯PPy （29.5 mAh·g ^-1）在相同的实验条件下。同时，PPy-Li-TCPA ₂（4：1）具有改进的速率性能和稳定的循环能力。优异的电化学性能归因于Li-TCPA ₂的引入作为掺杂剂，可改善PPy的电导率和氧化还原活性。此外，所得的复合物的良好分散的颗粒结构以及其改善的掺杂PPy的比表面积有助于电解质与活性物质的接触，从而导致活性物质的利用率提高和电化学性能增强。