期刊
SYNTHETIC METALS
卷 162, 期 11-12, 页码 953-957出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2012.04.002
关键词
Polyaniline; RuO2; Electrodeposition; Specific capacitance; Supercapacitor
资金
- high and new technology program of China [2007AA03Z240]
RuO2 embedded polyaniline electrodes were prepared by electrodeposition. PANI electrode was electrochemically deposited on tantalum sheet. Then RuO2 particles were embedded on film layer of polyaniline. RuO2/polyaniline electrode was annealed at 80 degrees C for 12 h. Microstructure and morphology of RuO2/polyaniline were characterized using X-ray diffraction, infrared spectrometer and scanning electron microscopy. Structure of the composite with amorphous phase was verified by X-ray diffraction. Fourier transform infrared spectroscopy results confirmed that counter ion had been incorporated into PPy matrix. Analysis by scanning electron microscopy revealed that during grain growth of RuO2/PANI, due to its porous morphology, PANI provides a large surface to the growing RuO2. The electrochemical performances of RuO2/polyaniline electrode are calculated using cyclic voltammetry and electrochemical impedance spectroscopy technology. RuO2/polyaniline electrode reveals high specific capacitance (474 F g(-1)), ideal cyclical stability and smaller charge transfer resistance (2.24 Omega). The good property for RuO2/polyaniline electrode is due to fine RuO2 particles embedded in the PANI of big surface area. (C) 2012 Elsevier B.V. All rights reserved.
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