Ir_(1-x)Ru_xO_2/Ti析氧阳极的电催化活性研究  

Electrocatalytic Activity of Ir_(1-x)Ru_xO_2/Ti Anodes for Oxygen Evolution

作　　者：李山梅[1] 叶锋[1] 魏浩杰[1] 侯淼淼[1] 王同涛[1] 王新东[1] 

机构地区：[1]北京科技大学冶金学院物理化学系,北京100083

出　　处：《稀有金属》2010年第1期63-67,共5页Chinese Journal of Rare Metals

基　　金：国家863计划(2007AA05V150)资助项目

摘　　要：以氯铱酸为主要的前驱体,采用加热分解法制备了不同Ru含量的Ir1-xRuxO2/Ti析氧阳极,并采用扫描电镜,循环伏安,恒电流电解,线性极化等测试手段对电极进行表征和测试。电化学测试结果表明当Ir,Ru的摩尔比为3∶2时,500mA.cm-2恒电流水解电位最低,为1.4V(vs.SCE);循环伏安测试表明,Ir0.6Ru0.4O2/Ti的伏安电量亦达到最高,达到1271mC.cm-2,析氧电催化活性点最多。SEM表面形貌进一步证实了Ru的加入使得电极的表面的多孔结构更加明显,当Ir,Ru摩尔比为3∶2时,电极表面颗粒最小,孔隙率最高,亦表明该电极的电化学活性表面积最大,电催化活性最高。Ir1-xRuxO2/Ti anodes with different content of Ru prepared by thermo-decomposition using ethanol and isopropanol mixed solution of chloroiridic acid (H2IrCl6) and ruthenium chloride (RuCl3) were characterized by SEM and investigated by cyclic voltammetry,charonopotentiometry,liner polarization. The electrochemical tests indicated that the potential with the electrolysis current of 500 mA·cm-2 was only 1.4 V (vs.SCE) corresponding to the electrode with metal content of 40% Ru; cyclic voltammetry test indicat...

关 键 词：Ir1-xRuxO2/Ti 电催化活性 多孔性 

分 类 号：TF351[冶金工程—冶金机械及自动化]