Evaluation of stress conditions in operated anode supported type cells based on In-situ raman scattering spectroscopy

Masafumi Nagai, Fumitada Iguchi, Syo Onodera, Noriko Sata, Tatsuya Kawada, Hiroo Yugami

研究成果: Conference contribution

9 被引用数 (Scopus)

抄録

We have developed a method for evaluating stress conditions in operated SOFCs based on in-situ Raman scattering spectroscopy. This method uses F 2g vibration mode of CeO 2 in interlayer of anode supported type SOFC as a probe, and we can calculate stress m an interlayer, i.e. stress in an electrolyte from the shift of a Raman peak. We apply this method to typical anode supported type cells and evaluate stress conditions during operation. Using this method, stress conditions in the electrolyte before operation is evaluated to be compressive, consistent with XRD and literature. During operation, stress conditions changed by the reduction of NiO to Ni; the compressive stress changed to tensile. In addition, the standard deviation of stresses became larger than before reoxidation, and nonreversible. These results indicate that compressive residual stress introduced into the electrolyte during fabrication process is relaxed, and suggest that an electrolyte becomes mechanically unstable during operation.

本文言語English
ホスト出版物のタイトルSolid Oxide Fuel Cells 12, SOFC XII
ページ519-525
ページ数7
1 PART 1
DOI
出版ステータスPublished - 2011 12 1
イベント12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
継続期間: 2011 5 12011 5 6

出版物シリーズ

名前ECS Transactions
番号1 PART 1
35
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period11/5/111/5/6

ASJC Scopus subject areas

  • Engineering(all)

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