摘要
本文制备了二氧化锰和聚苯胺碳的复合电级材料(MnO_2-PAnC),测试结果表明MnO_2-PAnC材料为松散结构组成的纳米颗粒.MnO_2-PAnC材料的比电容最大可达459 F·g-1,MnO_2-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,MnO_2-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,MnO_2-PAnC电容的保持率仍高于60%.以上实验结果表明,MnO_2-PAnC是很好的超级电容器的电极材料.
The polyaniline-carbon（PAnC） electrode was prepared by polymerization of aniline monomer and activated carbon in an ice water bath, and followed by chemical deposition of manganese dioxide（MnO_2）-PAnC composite material. The specific capacitance of MnO_2-PAnC reached 459 F·g-1. The cyclic voltammetric results showed a small deformation in the voltammogram curve obtained with the MnO_2-PAnC electrode at high scan rate, indicating good reversibility and capacitive properties. The AC impedance results revealed that the MnO_2-PAnC electrode displayed the smallest charge transfer resistance and the fastest diffusion rate of surface ions than other two materials of MnO_2 and MnO_2-C. After 500 cycles of charging and discharging processes, the capacitance retention rate of MnO_2-PAnC was still higher than 60%. The MnO_2-PAnC is promising as a good electrode material for supercapacitors.
作者
周田田
邬冰
邓超
高颖
ZHOU Tian-tian;WU Bing;DENG Chao;GAO Ying(Key Laboratory of Photochemistry Biological Materials and Energy Story Materials, Heilongjiang Provinc;College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, Heilongiiang, China)
出处
《电化学》
CAS
CSCD
北大核心
2018年第2期137-142,共6页
Journal of Electrochemistry
基金
黑龙江省自然科学基金(No.QC2013C008)资助
关键词
锰氧化物
聚苯胺
活性炭
电极材料
超级电容器
manganese oxide
polyaniline
active carbon
electrode material
supercapacitor
