Preparation and electrochemical performances of graphite oxide/polypyrrole composites

被引：43

作者：

Han, Yongqin ^{[1
]}

Hao, Liang ^{[1
]}

Zhang, Xiaogang ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Engn, Nanjing 210016, Peoples R China

来源：

SYNTHETIC METALS | 2010年 / 160卷 / 21-22期

基金：

中国国家自然科学基金;

关键词：

Graphite oxide; Polypyrrole; Composites; Electrochemical performance; OXIDE; CARBON; ELECTRODES; POLYPYRROLE; CAPACITANCE; SUPERCAPACITOR;

D O I：

10.1016/j.synthmet.2010.09.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphite oxide/polypyrrole composites (GPys) were prepared by in situ polymerization and reduced by NaBH4 to prepare reduced graphite oxide/polypyrrole composites (R-GPys). On the basis of the morphological and structural characterization of the composites by Fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM) tests, the electrochemical performances of the composites were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance techniques. The experimental results showed that the specific capacitances of the composites before and after reduction (197 and 180 F/g) were highly improved compared with that of pristine graphite oxide (11 F/g) and polypyrrole (112 F/g), respectively. The capacitance retention of about 73% for R-GPys compared with 12% for PPy and 47% for GPys after 1200 cycles indicated the high cycle stability of the R-GPys and its potential as an electrode material for supercapacitor applications. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2336 / 2340

页数：5

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