Poorly Crystalline Ru<sub>0.4</sub>Sn<sub>0.6</sub>O<sub>2</sub>Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors

• 作者: Beibei Li Fenghua Lu Fenyong Deng Yanqun Shao Zhonghua Yi
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 化学
• 关键词: Specific CAPACITANCE SUPERCAPACITOR RuO2-SnO2 Electrode Thermal Decomposition
• 年，卷（期）: 2012,（1）
• 页码范围: 118-122
• 页数: 5页
• 分类号: O6

摘要

Poorly crystalline Ru0.4Sn0.6O2 solid solution with size about 2 nm coated on Ti substrate was prepared by thermal decomposition at 260°C. The electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for structural and morphological studies. The Capacitance properties of the electrodes were tested by cyclic voltammetry and charge-discharge tests. The results show that the electrodes have mud-cracks structure with cracks 0.2 μm in width. The electrode has stable electrochemical capacitor properties with a maximum specific capacitance of 648 F/g within a scan potential window –0.1 - 1.0 V in 0.5 M H2SO4 electrolyte solution.