Electrochemically synthesized graphene/polypyrrole composites and their use in supercapacitor

被引：285

作者：

Chang, Hao-Hsiang ^{[1
]}

Chang, Chih-Kai ^{[1
]}

Tsai, Yu-Chen ^{[1
]}

Liao, Chien-Shiun ^{[2
]}

机构：

[1] Natl Chung Hsing Univ, Dept Chem Engn, Taichung 402, Taiwan

[2] Yuan Ze Univ, Dept Chem Engn & Mat Sci, Tao Yuan 320, Taiwan

来源：

CARBON | 2012年 / 50卷 / 06期

关键词：

GRAPHENE OXIDE; CONDUCTING POLYMERS; CAPACITANCE; ELECTRODES; NANOFIBER; FILM;

D O I：

10.1016/j.carbon.2012.01.056

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：

Composite films consisting of polypyrrole (PPy) and graphene oxide (GO) were electrochemically synthesized by electrooxidation of 0.1 M pyrrole in aqueous solution containing appropriate amounts of GO. Simultaneous chronoamperometric growth profiles and frequency changes on a quartz crystal microbalance showed that the anionic GO was incorporated in the growing GO/PPy composite to maintain its electrical neutrality. Subsequently, the GO was reduced electrochemically to form a reduced GO/PPy (RGO/PPy) composite by cyclic voltammetry. Specific capacitances estimated from galvanostatic discharge curves in 1 M H2SO4 at a current density of 1 A g(-1) indicated that values for the RGO/PPy composite were larger than those of a pristine PPy film and the GO/PPy composite. In the case of 6 mg mL(-1) GO for the preparation of GO/PPy, a high specific capacitance of 424 F g(-1) obtained at the electrochemically prepared RGO/PPy composite indicated its potential for use as an electrode material for supercapacitors. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2331 / 2336

页数：6

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