期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 150, 期 6, 页码 A790-A795出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1574031
关键词
-
The electrical properties of SrCe0.95Eu0.05O3-delta were studied as a function of both oxygen partial pressure and water vapor partial pressure in the temperature range of 500-800degreesC, and the partial conductivities of protons, holes, and oxygen vacancies were calculated from the proposed defect model. P-type conduction was dominant in an oxidative atmosphere. It was shown that, in a wet atmosphere, SrCe0.95Eu0.05O3-delta is a mixed conductor of protons, holes, and oxygen ions. A conduction transition from protons to holes and/or oxygen ions was found as temperature increased. The calculated activation energy of oxygen ion transport was 0.67 eV; standard solution enthalpy of water dissolution was -164 kJ/mole, which is larger than that of SrCe0.95Yb0.05O3-delta. The effect of dopants on the conduction mechanism is explained by a hopping mechanism. (C) 2003 The Electrochemical Society.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据