Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La0.6Sr0.4Co0.2Fe0.8O3 coating and heat treatment for the application of metal-supported solid oxide fuel cells

Hung Cuong Pham, Shunsuke Taniguchi, Yuko Inoue, Jyh Tyng Chou, Toru Izumi, Koji Matsuoka, Kazunari Sasaki

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

We have investigated the property of a Fe-Cr-Al-type stainless steel as a porous alloy substrate for metal-supported solid oxide fuel cells (SOFCs) especially on the cathode side. We found that the microstructure and electrical resistance of the surface oxide layer of the alloy changes depending on the heat-treatment conditions. A relatively low electrical resistance was obtained when the porous alloy substrate was coated with La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and heat treated at 700-800 °C in air. The morphology of the surface oxide layer observed by high-resolution transmission electron microscopy was a columnar structure of γ-Al2O3 polycrystal and Sr3Al2O6 growing outward in the same direction. In contrast, the surface oxide layer of the alloy showed a high electrical resistance when the uncoated porous alloy substrate was heat treated. The morphology of the surface oxide layer in that case was a columnar structure consisting of only γ-Al2O3 growing outward in various directions.

本文言語英語
ページ(範囲)181-187
ページ数7
ジャーナルJournal of Power Sources
297
DOI
出版ステータス出版済み - 8 11 2015

All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学

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「Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3</sub> coating and heat treatment for the application of metal-supported solid oxide fuel cells」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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