文献类型：期刊文献

英文题名：Preparation and characterization of RuO2/polypyrrole electrodes for supercapacitors

作者：Li, Xiang Wu, Yujiao Zheng, Feng Ling, Min Lu, Fanghai

第一作者：李祥

通信作者：Li, X[1]|[14440f8550d388a1a795f]李祥;

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China;[2]Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2014

卷号：197

起止页码：57-60

外文期刊名：SOLID STATE COMMUNICATIONS

收录：;EI(收录号：20150600500980);Scopus(收录号：2-s2.0-84922256020);WOS:【SCI-EXPANDED(收录号:WOS:000343223000013)】；

语种：英文

外文关键词：Ruthenium oxide; Polypyrrole; Electrodeposition; Specific capacitance

摘要：Polypyrrole (PPy) embedded RuO2 electrodes were prepared by the composite method. Precursor solution of RuO2 was coated on tantalum sheet and annealed at 260 degrees C for 2.5 h to develop a thin film. PPy particles were deposited on RuO2 films and dried at 80 degrees C for 12 h to form composite electrode. Microstructure and morphology of RuO2/PPy electrode were characterized using Fourier transform infrared spectrometer, X-ray diffraction and scanning electron microscopy, respectively. Our results confirmed that counter ions are incorporated into RuO2 matrix. Structure of the composite with amorphous phase was verified by X-ray diffraction. Analysis by scanning electron microscopy reveals that during grain growth of RuO2/PPy, PPy particle size sharply increases as deposition time is over 20 min. Electrochemical properties of RuO2/PPy electrode were calculated using cyclic voltammetry. As deposition times of PPy are 10, 20, 25 and 30 min, specific capacitances of composite electrodes reach 657, 553, 471 and 396 F g(-1), respectively. Cyclic behaviors of RuO2/PPy composite electrodes are stable. (C) 2014 Elsevier Ltd. All rights reserved,