Mixed-fuels fuel cell running on methane-air mixture

Sung Pil Yoon, Hyun Jae Kim, Byung Tak Park, Suk Woo Nam, Jonghee Han, Tae Noon Lim, Seong Ahn Hong

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In order to develop solid oxide fuel cells (SOFCs) running on hydrocarbon fuels, we have focused on a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria (SDC) within the pores of electrode by a sol-gel coating technique. The SDC coating on the pores of anode made it possible to have a good stability for long-term operation due to low carbon deposition and nickel sintering. In this study, we demonstrated a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria and applied the modification technique to two different types of fuel cell structures, anode-supported SOFC and comb-shaped SOFC. From our results, the maximum power density of an anode-supported cell (electrolyte; 8 mol% YSZ and thickness of 30 μm, and cathode; La0.85Sr0.15 MnO3) with the modified anode was ∼300 mW/cm2 at 700°C in the mixture of methane (25%) and air (75%) as the fuel, and air as the oxidant. The cell was operated for 500 hr without significant degradation of cell performance. For the comb-shaped SOFCs operated in the mixed fuels fuel cell conditions, the cell performance was 40 mW/cm2 at 700°C in the CH4/ O2 ratio of 1.

Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalJournal of Fuel Cell Science and Technology
Volume3
Issue number1
DOIs
Publication statusPublished - 2006 Feb

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Mechanical Engineering

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