RuO2/Activated Carbon Composite Electrode Prepared by Modified Colloidal Procedure and Thermal Decomposition Method

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• 作者：Xiang Li ; Feng Zheng ; Weiping Gan ; Xun Luo
• 关键词：RuO2 ; activated carbon ; specific capacitance ; annealing temperature
• 刊名：Journal of Electronic Materials
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：45
• 期：1
• 页码：374-378
• 全文大小：993 KB
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• 作者单位：Xiang Li (1)
  Feng Zheng (2)
  Weiping Gan (2)
  Xun Luo (1)
  
  1. School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China
  2. School of Materials Science and Engineering, Central South University, Changsha, 410083, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  Electronics, Microelectronics and Instrumentation
  Solid State Physics and Spectroscopy
  
• 出版者：Springer Boston
• ISSN：1543-186X

文摘

RuO₂/activated carbon (AC) composite electrode was prepared by a modified colloidal procedure and a thermal decomposition method. The precursor for RuO₂/AC was coated on tantalum sheet and annealed at 150°C to 190°C for 3 h to develop thin-film electrode. The microstructure and morphology of the RuO₂/AC film were characterized by thermogravimetric analysis (TGA), x-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM). The TGA results showed the maximum loss of RuO₂/AC composite film at 410°C, with residual RuO₂ of 23.17 wt.%. The amorphous phase structure of the composite was verified by XRD analysis. SEM analysis revealed that fine RuO₂ particles were dispersed in an activated carbon matrix after annealing. The electrochemical properties of RuO₂/AC electrode were examined by cycling voltammetry, galvanostatic charge–discharge, and cyclic behavior measurements. The specific capacitance of RuO₂/AC electrode reached 245 F g−1. The cyclic behavior of RuO₂/AC electrode was stable. Optimal annealing was achieved at 170°C for 3 h.