本文制备了二氧化锰和聚苯胺碳的复合电级材料(MnO₂-PAnC)，测试结果表明MnO₂-PAnC材料为松散结构组成的纳米颗粒. MnO₂-PAnC 材料的比电容最大可达459 F•g^-1，MnO₂-PAnC电极在较高的扫速下循环伏安曲线变形较小，表现出良好的可逆性. 交流阻抗测试结果表明，MnO₂-PAnC 电极电荷传递电阻小，表面离子扩散速度快. 充放电500个循环后，MnO₂-PAnC 电容的保持率仍高于60%. 以上实验结果表明，MnO₂-PAnC 是很好的超级电容器的电极材料.

The polyaniline-carbon (PAnC) electrode was prepared by the polymerization of aniline monomer and activated carbon in ice water bath, and followed by chemical deposition of manganese dioxide MnO₂-PAnC composite material. The specific capacitance of MnO₂-PAnC reached 459 F•g^-1. The cyclic voltammetric results showed a small deformation in the voltammogram curve obtained with the MnO₂-PAnC electrode at high scan rate, indicating good reversibility and capacitive properties. The AC impedance results revealed that the MnO₂-PAnC electrode displayed the smallest charge transfer resistance and the fastest diffusion
rate of surface ions than other two materials of MnO₂ and MnO₂-C. After 500 cycles of charging and discharging processes, the capacitance retention rate of MnO₂-PAnC was still higher than 60%. The MnO₂-PAnC is promising as a good electrode material for supercapacitors.