請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/42086
標題: Electrochemically synthesized graphene/polypyrrole composites and their use in supercapacitor
作者: Chang, Hao-Hsiang
Chang, Chih-Kai
Tsai, Yu-Chen
Liao, Chien-Shiun
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 6mgmL 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.
URI: http://hdl.handle.net/11455/42086
ISSN: 0008-6223
文章連結: http://dx.doi.org/10.1016/j.carbon.2012.01.056
顯示於類別:化學工程學系所

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