Promotion of oxygen surface reaction at the hetero-interface of (La,Sr)CoO3 / (La,Sr)2CoO4

M. Sase, F. Hermes, T. Nakamura, K. Yashiro, K. Sato, J. Mizusaki, T. Kawada, N. Sakai, K. Yamaji, T. Horita, H. Yokokawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

The preferential site for oxygen isotope exchange was investigated on layered films of (La2-xSrx)CoO4 (x = 0.5, 1.0) / (La0.6Sr0.4)CoO3 prepared by PLD on a polycrystalline Ce0.9Gd0.1O1.95. An isotope exchange experiment was performed at 723 K in 18O enriched oxygen of 0.2 ×105 Pa. Three-dimensional imaging of Secondary Ion Mass Spectrometry (SIMS) was carried out to visualize the isotope distribution. The SIMS image suggested that there are fast oxygen-incorporation paths along the triple phase boundary of (La2-xSrx)CoO4/ (La0.6Sr0.4)CoO3/oxygen. The results have reproduced our former results with (La2-xSrx)CoO 4/(La0.6Sr0.4)CoO3 composite polycrystals.

Original languageEnglish
Title of host publicationECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages1055-1060
Number of pages6
Edition1 PART 1
DOIs
Publication statusPublished - 2007
Event10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
Duration: 2007 Jun 32007 Jun 8

Publication series

NameECS Transactions
Number1 PART 1
Volume7
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
CountryJapan
Period07/6/307/6/8

ASJC Scopus subject areas

  • Engineering(all)

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