Oxygen adatoms and vacancies on the（110） surface of CeO2

被引：0
作者：
HUANG JingLu [1 ]
YU YunBo [2 ,3 ,4 ]
ZHU Jing [1 ]
YU Rong [1 ]
机构：
[1] National Center for Electron Microscopy in Beijing, Key Laboratory of Advanced Materials of Ministry of Education of China, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University
[2] State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences
[3] Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences
[4] University of Chinese Academy of Sciences
来源：
Science China(Technological Sciences) | 2018年 / 01期
基金：
中国国家自然科学基金;
关键词：
surface structure; ceria; oxygen adatoms; oxygen vacancies; aberration-corrected TEM; first-principles calculations;
D O I：
暂无
中图分类号：
TM911.4 [燃料电池];
学科分类号：
0808 ;
摘要：
The behavior of oxygen on ceria surfaces is closely related with the applications of ceria as a catalyst and oxygen conductor in solid-oxide fuel cells. Here, the atomic configurations of oxygen adatoms and vacancies on the（110） surface of CeO;have been studied combining aberration-corrected transmission electron microscopy and first-principles calculations. The oxygen adatoms were estimated to be located on top of Ce atoms with 50% coverage, forming a c（2×2） reconstruction. The oxygen vacancies can form stable configuration, with the Ce atoms partly reduced.
引用
收藏
页码：135 / 139
页数：5
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