Interconnect development for solid oxide fuel cell application

Isyraf Aznam, Andanastuti Muchtar, Mahendra Rao Somalu, Mariyam Jameelah Ghazali, Joelle Chia Wen Mah, Nurul Akidah Baharuddin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Solid oxide fuel cell (SOFC) is a green and reliable alternative energy source. Recent developments in SOFC have reduced its operating temperature from high (> 1000 °C) to intermediate (< 800 °C), thereby replacing ceramics by metal alloys as interconnect materials. Strict criteria in selecting interconnect material lead to Cr-based alloys as potential candidates, especially ferritic stainless steel (Fe-Cr-). Fe-Cr- possesses electrical conductivity, malleability, and low cost but it undergoes fast chromia scale growth rate, which leads to gaseous Cr species migration when exposed to high temperature (> 800 °C); the gas will cause poisoning on cathode, leading to cell degradation. To overcome this issue, protective coating is used as a barrier to prevent the gaseous Cr species from surfacing. Among the coatings that have been used in previous studies, spinel coating, especially (Mn, Co)3O4, exhibits the best performance in terms of coefficient of thermal expansion (CTE) and area specific resistance in long SOFC operation. A dopant, such as Cu, is added into the Mn-Co composition to improve the electrical conductivity and CTE of the coating.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalJournal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume51
Issue number2
Publication statusPublished - 1 Nov 2018

Fingerprint

Solid oxide fuel cells (SOFC)
Coatings
Thermal expansion
Hard facing
Protective coatings
Cathodes
Gases
Doping (additives)
Degradation
Chemical analysis
Temperature

Keywords

  • Coating
  • Development
  • Fabrication
  • Interconnect
  • SOFC

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Interconnect development for solid oxide fuel cell application. / Aznam, Isyraf; Muchtar, Andanastuti; Somalu, Mahendra Rao; Ghazali, Mariyam Jameelah; Wen Mah, Joelle Chia; Baharuddin, Nurul Akidah.

In: Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, Vol. 51, No. 2, 01.11.2018, p. 227-233.

Research output: Contribution to journalArticle

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