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黄善锋,冯珂珂,王艳鸿,张 帅,邵艳群,陈孔发,唐 电.涂覆载量对IrO2-CeO2-G/Ti电极组织结构和电容性能的影响[J].稀有金属材料与工程(英文),2020,49(5):1533~1538.[Shanfeng HUANG,Keke FENG,Yanhong WANG,Shuai ZHANG,Yanqun SHAO,Kongfa CHEN and Dian TANG.Effect of IrO2 Content on Microstructure and Capacitance of IrO2-CeO2-G/Ti Electrode[J].Rare Metal Materials and Engineering,2020,49(5):1533~1538.]
Effect of IrO2 Content on Microstructure and Capacitance of IrO2-CeO2-G/Ti Electrode
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Received:December 18, 2018  Revised:January 03, 2019
DOI:
Key words: supercapacitor, IrO2-CeO2-G/Ti composite electrode, IrO2 content, specific capacitance
Foundation item:the National Natural Science Foundation of China (21875038)
Author NameAffiliation
Shanfeng HUANG,Keke FENG,Yanhong WANG,Shuai ZHANG,Yanqun SHAO,Kongfa CHEN and Dian TANG  
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Abstract:
      The novel IrO2-CeO2-G/Ti composite electrodes were prepared by thermal decomposition method. The synthesized electrodes with different IrO2 content had been characterized by scanning electron microscope(SEM), transmission electron microscope(TEM), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The electrochemical performances of the electrodes were investigated by cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy in 0.5 M H2SO4 solution. The results showed that the electrode with 2.5mg/cm2 IrO2 exhibited an excellent specific capacitance value of 459.5 F/g, and the specific capacitance maintained about 97.8% after 5000 charge-discharge cycles at a 5mA/cm2 current density. The electrode with 2.5mg/cm2 IrO2 was an ideal electrode for supercapacitor due to?its unique composition proportion and the excellent pseudocapacitance property.