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

被引：68

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

来源：

ELECTROCHIMICA ACTA | 2012年 / 71卷

基金：

中国国家自然科学基金;

关键词：

Polyaniline; Mesoporous carbon; MnO2; Ternary composite; Electrochemical properties; MESOPOROUS CARBON; MANGANESE OXIDE; ELECTRODE; MNO2; COMPOSITE; CELLS;

D O I：

10.1016/j.electacta.2012.03.101

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

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.

引用

页码：27 / 32

页数：6

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