Interconnect Development for Solid Oxide Fuel Cell Application

Authors

  • Isyraf Aznam Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Andanastuti Muchtar Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Mahendra Rao Somalu Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Mariyam Jameelah Ghazali Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Joelle Chia Wen Mah Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Nurul Akidah Baharuddin Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia

Keywords:

SOFC, interconnect, coating, development, fabrication

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..

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Published

2020-12-01

How to Cite

Aznam, I. ., Muchtar, A. ., Somalu, M. R. ., Ghazali, M. J. ., Wen Mah, J. C. ., & Baharuddin, N. A. . (2020). Interconnect Development for Solid Oxide Fuel Cell Application. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 51(2), 227–233. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2351

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