摘要
采用循环伏安电沉积技术在钛基上获得水合氧化钌(RuOx·nH2O),其比容量为105F/g。通过电化学测试(循环伏安、恒电流充放电)、X射线衍射(XRD)、扫描电镜(SEM)以及X射线光电子能谱(XPS)等方法研究了沉积物的电化学性质、物相及组成。结果表明:电沉积法获得的水合氧化钌呈非晶态结构,它由多氧化态钌混合羟基氧化物组成。在1.0mol·L-1H2SO4溶液中,该氧化物呈准电容特征,有较高电化学可逆性,可用作电化学电容器电极材料。
Hydrous ruthenium oxide （RuOx·n H2O） with special capacitance of 105 F/g were prepared successfully on titanium substrates by cyclic voltammetry （CV） electrodeposition. The electrochemical properties, structures and composition of the deposited RuOx·n H2O were studied by a series of measurements and tests including CV, chronopotentiomery, XRD, SEM and XPS. The results showed that the hydrous ruthenium oxides with a non- crystalline state consist of mixed hydroxyl oxyruthenium species with various oxidation states. The deposited RuOx·n H2O exhibits high redox reversibility and obvious pseudocapacitance characterization, which have potential for application in electrochemical capacitors.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第1期9-12,共4页
Rare Metal Materials and Engineering
关键词
氧化钌
准电容
电沉积
电化学电容器
ruthenium oxide
pseudocapacitance
electrodeposition
electrochemical capacitors.
