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

doi:10.1016/j.jpowsour.2015.07.096

Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La_0.6Sr_0.4Co_0.2Fe_0.8O₃ 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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (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.

Original language	English
Pages (from-to)	181-187
Number of pages	7
Journal	Journal of Power Sources
Volume	297
DOIs	https://doi.org/10.1016/j.jpowsour.2015.07.096
Publication status	Published - Aug 11 2015

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2015.07.096

Cite this

Pham, H. C., Taniguchi, S., Inoue, Y., Chou, J. T., Izumi, T., Matsuoka, K., & Sasaki, K. (2015). Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La_0.6Sr_0.4Co_0.2Fe_0.8O₃ coating and heat treatment for the application of metal-supported solid oxide fuel cells. Journal of Power Sources, 297, 181-187. https://doi.org/10.1016/j.jpowsour.2015.07.096

Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La_0.6Sr_0.4Co_0.2Fe_0.8O₃ coating and heat treatment for the application of metal-supported solid oxide fuel cells. / Pham, Hung Cuong ; Taniguchi, Shunsuke ; Inoue, Yuko et al.
In: Journal of Power Sources, Vol. 297, 11.08.2015, p. 181-187.

Research output: Contribution to journal › Article › peer-review

Pham, HC , Taniguchi, S , Inoue, Y, Chou, JT, Izumi, T, Matsuoka, K & Sasaki, K 2015, 'Decrease in electrical resistance of surface oxide of iron-chromium-aluminium alloy by La_0.6Sr_0.4Co_0.2Fe_0.8O₃ coating and heat treatment for the application of metal-supported solid oxide fuel cells', Journal of Power Sources, vol. 297, pp. 181-187. https://doi.org/10.1016/j.jpowsour.2015.07.096

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title = "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",

abstract = "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.",

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AU - Taniguchi, Shunsuke

AU - Inoue, Yuko

AU - Chou, Jyh Tyng

AU - Izumi, Toru

AU - Matsuoka, Koji

AU - Sasaki, Kazunari

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N2 - 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.

AB - 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.

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