双功能氧电极催化剂LaNiO_3掺杂改性的研究  

Catalytic Activity of Doped LaNiO_3 for Bifunctional Oxygen Electrode

作　　者：唐致远[1] 潘丽珠[1] 宋世栋[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2003年第4期404-408,共5页Journal of Tianjin University：Science and Technology

摘　　要：采用溶胶 凝胶法制备了钙钛矿型双功能氧电极催化剂LaNiO3及其B位掺杂不同比例的Co和Fe系列,用X射线衍射分析(XRD)技术对催化剂进行了表征定性,并采用稳态阴阳极极化曲线和循环伏安方法考察了各种催化剂的氧还原和氧析出催化活性.结果表明,钙钛矿型催化剂LaNi0.8Fe0.2O3和LaNi0.8Co0.2O3用在双功能氧电极上具有良好的双向催化性能.LaNi1-xCoXxO3 and LaNi1-xFexO3(x=0～0.5)perovskite complex oxides,used as the catalysts of bifunctional oxygen electrode, were prepared by SolGel method. The characterization of the samples was carried out by XRD. Their electrocatalytic activity at oxygen electrode was investigated by the steady polarization curves method and cyclic voltammetry method. The results show that LaNi0.8Co0.2O3 and LaNi0.8Fe0.2O3 used as catalyst of bifunctional oxygen electrode are of excellent catalytic activity.

关 键 词：双功能氧电极催化剂 LANIO3 掺杂改性 钙钛矿型复合氧化物 溶胶-凝胶法 催化性能 

分 类 号：TQ426.8[化学工程]