Effect of oxidation on the Al-foam reinforced matrix for molten carbonate fuel cells

Hyun Woo Kim; Jae Kwan Bae; Min Goo Kang; Seong Cheol Jang; Hyung Chul Ham; Sung Pil Yoon; Heon Jin Choi

doi:10.1016/j.ijhydene.2019.06.183

Effect of oxidation on the Al-foam reinforced matrix for molten carbonate fuel cells

Hyun Woo Kim, Jae Kwan Bae, Min Goo Kang, Seong Cheol Jang, Hyung Chul Ham, Sung Pil Yoon, Heon Jin Choi

Department of Materials Science and Engineering

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

8 Citations (Scopus)

Abstract

In this study, Al-foam as a support material is used to reinforce the mechanical strength of the matrix. The use of an Al-foam supported matrix improves mechanical strength but has lower cell performance than using a conventional matrix. The main reasons for the low performance of the cell using the Al-foam supported matrix are short circuit due to leakage current through the Al-foam support and low electrolyte retention capability because of low wettability of aluminum to the liquid electrolytes. To solve these problems, we have developed a process to oxidize the surface of Al-foam reinforced matrix. By observing the unit cell performances, electrochemical analyses and morphological changes according to various oxide thicknesses of the Al-foam support, we have confirmed the optimal oxidation conditions for the Al-foam reinforced matrix. As a result, it was confirmed that the use of an oxidized Al-foam reinforced matrix of about 30 vol% can achieve a cell performance of more than 0.8 V under the current load of 150 mA/cm² and improve long-term stability.

Original language	English
Pages (from-to)	22210-22217
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	39
DOIs	https://doi.org/10.1016/j.ijhydene.2019.06.183
Publication status	Published - 2019 Aug 13

Bibliographical note

Funding Information:
This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20163030031860).

Funding Information:
This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy , Republic of Korea. (No. 20163030031860 ).

Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

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10.1016/j.ijhydene.2019.06.183

Cite this

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title = "Effect of oxidation on the Al-foam reinforced matrix for molten carbonate fuel cells",

abstract = "In this study, Al-foam as a support material is used to reinforce the mechanical strength of the matrix. The use of an Al-foam supported matrix improves mechanical strength but has lower cell performance than using a conventional matrix. The main reasons for the low performance of the cell using the Al-foam supported matrix are short circuit due to leakage current through the Al-foam support and low electrolyte retention capability because of low wettability of aluminum to the liquid electrolytes. To solve these problems, we have developed a process to oxidize the surface of Al-foam reinforced matrix. By observing the unit cell performances, electrochemical analyses and morphological changes according to various oxide thicknesses of the Al-foam support, we have confirmed the optimal oxidation conditions for the Al-foam reinforced matrix. As a result, it was confirmed that the use of an oxidized Al-foam reinforced matrix of about 30 vol% can achieve a cell performance of more than 0.8 V under the current load of 150 mA/cm2 and improve long-term stability.",

author = "Kim, {Hyun Woo} and Bae, {Jae Kwan} and Kang, {Min Goo} and Jang, {Seong Cheol} and Ham, {Hyung Chul} and Yoon, {Sung Pil} and Choi, {Heon Jin}",

note = "Funding Information: This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20163030031860). Funding Information: This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy , Republic of Korea. (No. 20163030031860 ). Publisher Copyright: {\textcopyright} 2019 Hydrogen Energy Publications LLC",

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doi = "10.1016/j.ijhydene.2019.06.183",

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AU - Kim, Hyun Woo

AU - Bae, Jae Kwan

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AU - Jang, Seong Cheol

AU - Ham, Hyung Chul

AU - Yoon, Sung Pil

AU - Choi, Heon Jin

N1 - Funding Information: This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20163030031860). Funding Information: This work was supported by the Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and granted financial resources from the Ministry of Trade, Industry & Energy , Republic of Korea. (No. 20163030031860 ). Publisher Copyright: © 2019 Hydrogen Energy Publications LLC

PY - 2019/8/13

Y1 - 2019/8/13

N2 - In this study, Al-foam as a support material is used to reinforce the mechanical strength of the matrix. The use of an Al-foam supported matrix improves mechanical strength but has lower cell performance than using a conventional matrix. The main reasons for the low performance of the cell using the Al-foam supported matrix are short circuit due to leakage current through the Al-foam support and low electrolyte retention capability because of low wettability of aluminum to the liquid electrolytes. To solve these problems, we have developed a process to oxidize the surface of Al-foam reinforced matrix. By observing the unit cell performances, electrochemical analyses and morphological changes according to various oxide thicknesses of the Al-foam support, we have confirmed the optimal oxidation conditions for the Al-foam reinforced matrix. As a result, it was confirmed that the use of an oxidized Al-foam reinforced matrix of about 30 vol% can achieve a cell performance of more than 0.8 V under the current load of 150 mA/cm2 and improve long-term stability.

AB - In this study, Al-foam as a support material is used to reinforce the mechanical strength of the matrix. The use of an Al-foam supported matrix improves mechanical strength but has lower cell performance than using a conventional matrix. The main reasons for the low performance of the cell using the Al-foam supported matrix are short circuit due to leakage current through the Al-foam support and low electrolyte retention capability because of low wettability of aluminum to the liquid electrolytes. To solve these problems, we have developed a process to oxidize the surface of Al-foam reinforced matrix. By observing the unit cell performances, electrochemical analyses and morphological changes according to various oxide thicknesses of the Al-foam support, we have confirmed the optimal oxidation conditions for the Al-foam reinforced matrix. As a result, it was confirmed that the use of an oxidized Al-foam reinforced matrix of about 30 vol% can achieve a cell performance of more than 0.8 V under the current load of 150 mA/cm2 and improve long-term stability.

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Effect of oxidation on the Al-foam reinforced matrix for molten carbonate fuel cells

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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