Synthesis of hierarchical sulfonated graphene/MnO2/polyaniline ternary composite and its improved electrochemical performance

被引：118

作者：

Wang, Guangxiang ^{[1
]}

Tang, Qianqiu ^{[1
]}

Bao, Hua ^{[1
]}

Li, Xingwei ^{[1
]}

Wang, Gengchao ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2013年 / 241卷

基金：

中国国家自然科学基金;

关键词：

Supercapacitor; Manganese dioxide; Graphene; Polyaniline; Electrochemical performance; MANGANESE OXIDE; CARBON NANOTUBES; ENERGY-STORAGE; CHARGE STORAGE; SUPERCAPACITORS; CAPACITORS; MNO2; ELECTRODES; GRAPHENE; POLYANILINE;

D O I：

10.1016/j.jpowsour.2013.04.122

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel ternary composite of sulfonated graphene/MnO2/polyaniline (sGMOPANI) is synthesized via a dilute in-situ polymerization method using potassium permanganate as oxidant under neutral condition. The FE-SEM and HRTEM images show that MnO2/polyaniline nanoparticles with the diameter of 5 -10 nm deposit onto sulfonated graphene nanosheets. Spectral analysis reveals the existence of the hydrogen bond and pi-pi interaction between MnO2/polyaniline nanoparticles and sulfonated graphene. As a result, the sGMOPANI composite based on the two-electrode cell shows improved electrochemical capacitance (276 F g(-1) at 1 g(-1) in 1 M Na2SO4), better rate capability (73% capacitance retention from 0.2 to 20 A g(-1)), and higher cycling stability (11.7% capacitance loss after 3000 cycles) compared to the MnO2/polyaniline binary composite. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：231 / 238

页数：8

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