Carbon-tolerance effects of Sm0.2Ce0.8O 2-δ modified Ni/YSZ anode for solid oxide fuel cells under methane fuel conditions

Jeong Myeong Lee, Yoon Gon Kim, Seung Jin Lee, Hee Su Kim, Sung Pil Yoon, SukWoo Nam, Soon Do Yoon, Jeong Woo Yun

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Samarium-doped ceria (SDC) is coated onto a Ni/yttria-stabilized zirconia (Ni/YSZ) anode for the direct use of methane in solid-oxide fuel cells. Porous SDC thin layer is applied to the anode using the sol-gel coating method. The experiment was performed in H2 and CH4 conditions at 800°C. The cell performance was improved by approximately 20 % in H 2 conditions by the SDC coating, due to the high ionic conductivity, the mixed ionic and electronic conductive property of the SDC, and the increased triple phase boundary area by the SDC coating in the anode. Carbon was hardly deposited in the SDC-coated Ni/YSZ anode. The cell performance of the SDC-coated Ni/YSZ anode did not show any significant degradation for up to 90 h under 0.1 A cm-2 at 800°C. The porous thin SDC coating on the Ni/YSZ anode provided the electrochemical oxidation of CH4 over the whole anode, and minimized the carbon deposition by electrochemical carbon oxidation.

Original languageEnglish
Pages (from-to)581-588
Number of pages8
JournalJournal of Applied Electrochemistry
Volume44
Issue number5
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Fingerprint

Samarium
Yttria stabilized zirconia
Cerium compounds
Methane
Solid oxide fuel cells (SOFC)
Anodes
Carbon
Coatings
Electrochemical oxidation
Phase boundaries
Ionic conductivity
Sol-gels
Degradation
Oxidation

Keywords

  • Carbon deposition
  • Electrochemical oxidation
  • Methane
  • SDC coating
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Carbon-tolerance effects of Sm0.2Ce0.8O 2-δ modified Ni/YSZ anode for solid oxide fuel cells under methane fuel conditions. / Lee, Jeong Myeong; Kim, Yoon Gon; Lee, Seung Jin; Kim, Hee Su; Yoon, Sung Pil; Nam, SukWoo; Yoon, Soon Do; Yun, Jeong Woo.

In: Journal of Applied Electrochemistry, Vol. 44, No. 5, 01.01.2014, p. 581-588.

Research output: Contribution to journalArticle

Lee, Jeong Myeong ; Kim, Yoon Gon ; Lee, Seung Jin ; Kim, Hee Su ; Yoon, Sung Pil ; Nam, SukWoo ; Yoon, Soon Do ; Yun, Jeong Woo. / Carbon-tolerance effects of Sm0.2Ce0.8O 2-δ modified Ni/YSZ anode for solid oxide fuel cells under methane fuel conditions. In: Journal of Applied Electrochemistry. 2014 ; Vol. 44, No. 5. pp. 581-588.
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