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

Research output: Contribution to journalArticle

2 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 languageEnglish
Pages (from-to)22210-22217
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number39
DOIs
Publication statusPublished - 2019 Aug 13

All Science Journal Classification (ASJC) codes

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

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