Great Diversity in Stability of Perovskite-Type Oxides Studied by Electrochemical Hydrogen Charging

作     者：PEI Yuchong CHEN Wanping PEI Yuchong,CHEN Wanping Key Laboratory of Artificial Micro-and Nanostructures of Ministry of Education/School of Physics and Technology,Wuhan University,Wuhan 430072,Hubei,China

作者机构：Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education School of Physics and Technology Wuhan University Wuhan 430072 Hubei China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2011年第16卷第3期

页      面：255-259页

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported by the National Natural Science Foundation of China (50772077) 

主　　题：perovskite oxide stability hydrogen 

摘      要：Single crystals of 0.91Pb（Zn1/3Nb2/3）O3-0.09PbTiO3, SrTiO3 and BaTiO3, and ceramic pellets of CaCu3Ti4Oi2 and BiFeO3 have been studied and compared through electrochemical hydrogen charging, in which the oxides were coated with silver electrodes to electrolyze water as the cathode. Great diversity has been observed in the stability of the oxides： 0.91Pb（Zn1/3Nb2/3）O3- 0,09PbTiO3 was quickly decomposed; hydrogen could enter the lattice of the other four oxides, but their properties were influenced at extremely different speeds. Such a great diversity in stability against hydrogen among perovskite-type oxides highlights the importance of reliability study over functional oxides materials.