A new cathode for reduced-temperature molten carbonate fuel cells

Hoang Viet Phuc Nguyen, Min Goo Kang, Hyung Chul Ham, Sun Hee Choi, Jonghee Han, SukWoo Nam, Seong Ahn Hong, Sung Pil Yoon

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12 Citations (Scopus)

Abstract

Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600°C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi1.5Y0.3Sm0.2O3-δ) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to providemore oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550°C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells.

Original languageEnglish
Pages (from-to)F1458-F1467
JournalJournal of the Electrochemical Society
Volume161
Issue number14
DOIs
Publication statusPublished - 2014
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Nguyen, H. V. P., Kang, M. G., Ham, H. C., Choi, S. H., Han, J., Nam, S., ... Yoon, S. P. (2014). A new cathode for reduced-temperature molten carbonate fuel cells. Journal of the Electrochemical Society, 161(14), F1458-F1467. https://doi.org/10.1149/2.0741414jes