Preparation and electrochemical properties of RuO2/polyaniline electrodes for supercapacitors

被引：42
|
作者：
Li, Xiang [1 ]
Gan, Weiping [1 ]
Zheng, Feng [1 ]
Li, Lulu [1 ]
Zhu, Nina [1 ]
Huang, Xiaoqing [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
来源：
SYNTHETIC METALS | 2012年 / 162卷 / 11-12期
关键词：
Polyaniline; RuO2; Electrodeposition; Specific capacitance; Supercapacitor; POLYANILINE; COMPOSITE; PERFORMANCE; CAPACITORS;
D O I：
10.1016/j.synthmet.2012.04.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：953 / 957
页数：5
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