采用热分解方法在钛基体上制备了（36％）RuO2-（64％）Ta2O5混合氧化物涂层。采用X射线衍射（XRD）、扫描电镜（SEM）、循环伏安（CV）以及恒流充放电测试研究了涂层电极的组织结构、表面形貌以及电容性能。结果表明：（36％）RuO2-（64％）Ta2O5涂层以非晶氧化物为基体，带有少量纳米微晶RuO2的组织结构。在酸性溶液中，在50～900mV／s的扫描速度下，Ti／（36％）RuO2-（64％）Ta2O5涂层电极的伏安曲线都具有近似矩形形状，表现出良好的电容特性和功率特性。以5mA／cm^2和10mA／cm^2放电，比电容分别为525．5F／g和495．1F／g。在经历2000次循环充放电后，电极的电荷储存能力仍未衰减，显示其优异的循环稳定性。
A amorphous/crystal mixed structural 36% RuO2-64% Ta2O5coating was deposited on titanium substrate from ethanol ruthenium and tantalum chloride solution, using the thermal decomposition method at 300 ℃. Structure and electrochemical capacitive properties of the coating were investigated by means of X-ray diffraction （XRD） , scanning electron microscopy （SEM） , cyclic voltammetry （CV） and galvanostatic charge-discharge tests. The XRD results reveal the 36% RUO：-64% Ta2O5 coating presents amorphous structure with some nano-size crystallites in the amorphous matrix. The electrochemical analysis shows that the Ti/36% RuO：64% Ta2O5 electrode exhibits typical capacitive characteristics and good power characteristics in 0. 5 mol/L H2SO4 electrolyte. Its specific capacitance as single electrode is up to 525.5 and 495.1 F/g （ RuO2） at a discharge current of 5 and 10 mA/cm^2 , respectively. Excellent cycling behavior is observed for this coating, with no loss in specific capacitance during 2000 cycles.
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