稀土Ce对涂层阳极电催化性能的影响  

Effect of Rare Earth Cerium Doping on Electrocatalytic Activity of Coating Anode

作　　者：王清泉[1] 刘贵昌[1] 景时[1] 

机构地区：[1]大连理工大学材料化工系,辽宁大连116012

出　　处：《材料保护》2005年第12期1-3,10,共4页Materials Protection

摘　　要：在涂层阳极中掺入稀土Ce对电催化性能的影响报道较少.利用热分解方法在不同温度下制备了不同摩尔分数Ce的三元涂层Ru0.3Ti(0.7～x)CexO2,通过极化曲线测试、交流阻抗谱测试、扫描电镜观察,研究了所制备涂层的电催化活性.结果表明:Ce的掺入量有一个最佳范围,摩尔分数为0.2～0.3时涂层阳极电催化性能最好;适当的热分解温度有利于含Ce涂层阳极性能的提高,最佳温度为450℃;在阳极涂层中引入Ce可以提高其电催化活性.Ru_(0.3)Ti_((0.7~x))CexO_(2) ternary coating with different compositions were prepared at different temperatures using thermal decomposition method.The electrocatalytic activity of the coating was investigated based on measurement of anodic polarization curve and alternation current impedance.The morphology of the coating anode was observed using a scanning electron microscope.It was found that doping of cerium contributed to improve the catalytic activity of the coating anode,and the coating doped with 0.2~0.3(mole fraction) cerium had the highest electrocatalytic activity.Moreover,it was feasible to improve the electrocatalytic activity of the coating anode by properly controlling the thermal decomposition temperature,and it was suggested to perform the thermal decomposition at 450 ℃ so as to realize the optimized electrocatalytic activity of the coating anode doped with cerium.

关 键 词：涂层阳极 稀土Ce 电催化活性 

分 类 号：TG174.45[金属学及工艺—金属表面处理]