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：李翔

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

机构：[1] School of Material and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] School of Material Science and Engineering, Central South University, Changsha, 410083, China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：|贵州理工学院材料与冶金工程学院

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)

语种：英文

外文关键词：Electrochemical electrodes - Supercapacitor - Fourier transform infrared spectroscopy - Particle size - Deposition - Particle size analysis - Cyclic voltammetry - Capacitance - Film preparation - Grain growth - Polypyrroles - Scanning electron microscopy - X ray diffraction

摘要：Polypyrrole (PPy) embedded RuO2electrodes were prepared by the composite method. Precursor solution of RuO2was coated on tantalum sheet and annealed at 260 °C for 2.5 h to develop a thin film. PPy particles were deposited on RuO2films and dried at 80 °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 RuO2matrix. 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. ? 2014 Elsevier Ltd.