In-situ analysis of the in-plane current distribution difference between electrolyte-supported and anode-supported planar solid oxide fuel cells by segmented electrodes

T. Ochiai, H. Nakajima, T. Karimata, T. Kitahara, K. Ito, Y. Ogura

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

1 被引用数 (Scopus)

抄録

In the planar solid oxide fuel cell (SOFC), the fuel/oxidant distributions cause current and temperature distributions over the electrodes under the separator (interconnector) ribs and flow channels. Optimized designs of the separator to improve the output power and chemical/thermo-mechanical durability of practical stacks require numerical models validated by in-situ current distributions measured. We have therefore clarified the difference of in-situ measurements in-plane spatial current variations between an anode-supported planar SOFC and electrolyte-supported by segmented cathodes opposing the anode rib and flow channels. We focus on the effect of the rib width on the spatial current distribution. We model the current and hydrogen partial pressure distributions by finite element modeling so that the model agrees with the in-situ measurements by the segmented cathodes with determining the exchange current densities, electrode porosities, electrolyte ion conductivities, and electrode ion/electron conductivities.

本文言語英語
ホスト出版物のタイトルECS Transactions
編集者S. C. Singhal, T. Kawada
出版社Electrochemical Society Inc.
ページ2203-2209
ページ数7
1
ISBN(電子版)9781607688150, 9781607688150
DOI
出版ステータス出版済み - 5月 30 2017
イベント15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, 米国
継続期間: 7月 23 20177月 28 2017

出版物シリーズ

名前ECS Transactions
番号1
78
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

その他

その他15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
国/地域米国
CityHollywood
Period7/23/177/28/17

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)

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