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 el...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.展开更多
催化材料是空气电池性能提高的技术关键。采用热分解法制备了金属氧化物催化剂Mn Co O。通过极化曲线及空气电极性能曲线测试发现:用酸化后的Mn3CoO7为催化剂的空气电极极化程度最小,在200mA/cm2的电流密度下,极化电位仅为-0 1522V;以10...催化材料是空气电池性能提高的技术关键。采用热分解法制备了金属氧化物催化剂Mn Co O。通过极化曲线及空气电极性能曲线测试发现:用酸化后的Mn3CoO7为催化剂的空气电极极化程度最小,在200mA/cm2的电流密度下,极化电位仅为-0 1522V;以100mA/cm2恒流电解,电极寿命可达800h,说明酸化后的Mn3CoO7催化剂具有良好的综合电化学性能。展开更多
文摘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.
文摘催化材料是空气电池性能提高的技术关键。采用热分解法制备了金属氧化物催化剂Mn Co O。通过极化曲线及空气电极性能曲线测试发现:用酸化后的Mn3CoO7为催化剂的空气电极极化程度最小,在200mA/cm2的电流密度下,极化电位仅为-0 1522V;以100mA/cm2恒流电解,电极寿命可达800h,说明酸化后的Mn3CoO7催化剂具有良好的综合电化学性能。
