文献类型：期刊文献

英文题名：Fabrication of polyaniline/mesoporous carbon/MnO₂ ternary nanocomposites and their enhanced electrochemical performance for supercapacitors

作者：Yan, Yanfang[1];Cheng, Qilin[1,2];Pavlinek, Vladimir[2];Saha, Petr[2];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Tomas Bata Univ Zlin, Ctr Polymer, Ctr Polymer Syst, Zlin 76001, Czech Republic

年份：2012

卷号：71

起止页码：27

外文期刊名：ELECTROCHIMICA ACTA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000304510900005)】；

基金：This work was supported by the National Natural Science Foundation of China (20925621), the Special Projects for Key Laboratories in Shanghai (10DZ2211100), the Special Projects for Nanotechnology of Shanghai (1052nm02300), the Shanghai Pujiang Program (09PJ1403200), the Basic Research Program of Shanghai (10JC1403300 and 10JC1403600), the Fundamental Research Funds for the Central Universities and the project sponsored by SRF for ROCS, SEM.

语种：英文

外文关键词：Polyaniline; Mesoporous carbon; MnO2; Ternary composite; Electrochemical properties

摘要：Polyaniline/mesoporous carbon/MnO2 (PANI/CMK-3/MnO2) ternary nanocomposites with a PANI nanolayer uniformly deposited on the CMK-3/MnO2 particles were synthesized by chemical oxidative polymerization. Structure and morphology of the ternary composites were further characterized by TEM, XRD, FTIR and FE-SEM techniques. Electrochemical measurements demonstrated that the ternary composite with 12% MnO2 content possessed enhanced specific capacitance of 695 Fg(-1) and the capacitance retention was 88% after 1000 galvanostatic charge-discharge cycles at a current density of 1.0 A g(-1). The incorporation of MnO2 nanoparticles can not only contribute to high capacitance but also stabilize the interaction between the quinoid ring of PANI and the CMK-3/MnO2 particles. The PANI nanolayer in the ternary composite restrains the dissolution of MnO2 nanoparticles in acidic electrolyte so as to enhance their electrochemical utilization. The synergistic effect among three components may result in enhanced specific capacitance and cycling stability of the ternary composites. (C) 2012 Elsevier Ltd. All rights reserved.