La_(1-x)Sr_xCoO_3钙钛矿氧化物电极的物理化学和析氧电化学特性  

PHYSICALCHEMICAL AND ELECTROCHEMICAL PROPERTIES OF La_(1-x)Sr_xCoO_3 PEROVSKITE OXIDE ELECTRODES FOR OXYGEN EVOLUTION

作　　者：王鹏[1] 姚立广[1] 王明贤 吴维 

机构地区：[1]中国科学院金属研究所腐蚀与防护国家重点实验室,沈阳市110015

出　　处：《材料研究学报》2000年第3期260-264,共5页Chinese Journal of Materials Research

摘　　要：用酒石酸辅助法制备了La1-xSrxCoO3系列钙钛矿氧化物，结果表明，采用该方法可在较低温度下形成高比表面的钙钛矿Sr取代La有助于形成均相多孔的表面，提高氧化物的比表面,电化学研究表明，钙钛矿氧化物膜电极Ni／La1-xSrxCoO3在碱性溶液中表现出很高的析氧电催化活性和良好的稳定性.La1-xSrxCoO3 series perovskite oxides were prepared by tartaric acid-aided method.The XRD, SEM and CV results indicated that perovskites with high specific surface area can be prepared at moderate temperature by this method and the substitution of Sr for La in the oxide lattice was helpful to the formation of uniform and porous surface and the increase of its specific surface area. The electrochemical results suggested that the perovskite oxide film eIectrode Ni/La0.8Sr0.2CoO3 exhibited the highest electrocatalytic accivity among all the others prepared and a high stability.

关 键 词：钙钛矿 氧化物电极 制备 析氧 电化学特性 

分 类 号：O646.5[理学—物理化学]