Application of SIMS analyses on oxygen transport in SOFC materials

被引：9
|
作者：
Sakai, N.
Yamaji, K.
Horita, T.
Kishimoto, H.
Brito, M. E.
Yokokawa, H.
Uchimoto, Y.
机构：
[1] Natl Inst Adv Ind Sci & Technol, Inst Energy Technol, Fuel Cell Grp, Tsukuba, Ibaraki 3058565, Japan
[2] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan
来源：
APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 19期
关键词：
SOFC; oxygen; diffusion; isotope exchange; imaging; depth profiling;
D O I：
10.1016/j.apsusc.2006.02.187
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The oxygen transport was investigated for modelled interface of striped metal electrode on a solid oxide electrolyte by oxygen tracer exchange and three dimensional imaging techniques by using a secondary ion mass spectrometry (SIMS). The gold or platinum electrode on yttrium stabilized zirconia (YSZ) electrolyte were stable, and acted as a blocking layer of 180 diffusion during the treatments in dry atmosphere at T = 873 K in p(O-18(2)) = 7 kPa. The oxygen flow via triple phase boundary was clearly observed for both electrodes. The treatment in humid atmosphere (T = 773 K, P(O-18(2)) = 7 kPa, p((H2O)-O-18) = 2 kPa) raised the flux of oxygen diffusion through YSZ surface, however, it did not affect on the role of electrode on the oxygen transport properties. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：7045 / 7047
页数：3
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