文献类型：期刊文献

英文题名：Synthesis of hierarchical sulfonated graphene/MnO2/polyaniline ternary composite and its improved electrochemical performance

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

年份：2013

卷号：241

起止页码：231

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20132216370539);WOS:【SCI-EXPANDED(收录号:WOS:000323093700029)】；

基金：We greatly appreciate the financial supports of National Natural Science Foundation of China (51173042), Shanghai Municipal Science and Technology Commission (12nm0504102), Fundamental Research Funds for the Central Universities, and Innovation Program of Shanghai Municipal Education Commission (11ZZ55).

语种：英文

外文关键词：Supercapacitor; Manganese dioxide; Graphene; Polyaniline; Electrochemical performance

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.