CeO_2对Ti基RuO_2-SnO_2涂层阳极电催化性能的影响  

Effect of Doping CeO_2 on Electrocatalysis of Titanium Based RuO_2-SnO_2 Anodes

作　　者：纪红[1] 周德瑞[1] 周育红[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001

出　　处：《稀土》2004年第6期41-44,共4页Chinese Rare Earths

摘　　要：采用热分解法制备了掺杂CeO2的Ti基RuO2-SnO2涂层阳极,通过开路电位测试、循环伏安测试以及交流阻抗测试研究了所制备涂层阳极的电催化性能,并用扫描电镜观察了涂层阳极的表面形貌。结果表明,在涂层阳极中掺杂CeO2可以提高涂层阳极的电催化活性,CeO2的最佳掺杂量为0.4(摩尔分数)。涂层阳极电催化性能提高的原因在于掺杂的CeO2可以提高涂层的有效活性表面积。Titanium based RuO_2-SnO_2 coating anodes are prepared by doping CeO_2. The electrocatalytic activity of coating anode is investigated by open-circuit potential, cyclic voltammetry and alternating current impedance tests.The morphology of coating anode is studied by scanning electron microscope (SEM). It is shown that the electrocatalytic ability of RuO_2-SnO_2 coating anode can be improved by doping CeO_2. The highest activity of the coating anode is associated with the composition corresponding to 0.4 (mole fraction) CeO_2. The increase of activity is attributed to the enhancement of active surface area.

关 键 词：氧化物阳极 电催化 掺杂 CEO2 

分 类 号：TB304[一般工业技术—材料科学与工程]