Study on the effect of current collector structures on the performance of MCFCs using three-dimensional fluid dynamics analysis

Chang Whan Lee, Mihui Lee, Sung Pil Yoon, Hyung Chul Ham, Sun Hee Choi, Jonghee Han, SukWoo Nam, Dong Yol Yang

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3 Citations (Scopus)

Abstract

The effect of current collectors of molten carbonate fuel cells (MCFCs) was studied through three-dimensional computational fluid dynamics and experiments. Three types of current collectors such as a sheet with sheared protrusions and perforated sheets were employed and performances of MCFCs were compared. A current collector structure with a large gas open area to electrodes improves diffusion characteristics between electrodes and gas flow channels. As a result, differences of gas mole fractions between gas flow channels and electrodes were decreased. Finally, Nernst loss and cathode polarization loss decreased, and the performance was enhanced. Using these results, current collector structures for improved performance and long-term operation were discussed.

Original languageEnglish
Pages (from-to)153-161
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume51
DOIs
Publication statusPublished - 2017 Jul 25

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Keywords

  • CFD
  • Current collector
  • MCFC
  • Polarization

ASJC Scopus subject areas

  • Chemical Engineering(all)

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