Improvement of anode performance by surface modification for solid oxide fuel cell running on hydrocarbon fuel

Sung Pil Yoon, Jonghee Han, Suk Woo Nam, Tae Hoon Lim, Seong Ahn Hong

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

A Ni/ yttria-stabilized zirconia (YSZ) cermet anode was modified by coating with samaria-doped ceria (SDC, Sm0.2Ce0.8O2) sol within the pores of the anode for a solid oxide fuel cell (SOFC) running on hydrocarbon fuel. The surface modification of Ni/YSZ anode resulted in an increase of structural stability and enlargement of the triple phase boundary (TPB), which can serve as a catalytic reaction site for oxidation of carbon or carbon monoxide. Consequently, the SDC coating on the pores of anode made it possible to have good stability for long-term operation due to low carbon deposition and nickel sintering. The maximum power density of an anode-supported cell (electrolyte; 8mol% YSZ and thickness of 30μm, and cathode; La 0.85Sr0.15MnO3) with the modified anode was about 0.3W/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 500h without significant degradation of cell performance.

Original languageEnglish
Pages (from-to)30-36
Number of pages7
JournalJournal of Power Sources
Volume136
Issue number1
DOIs
Publication statusPublished - 2004 Sep 10

Keywords

  • Carbon deposition
  • Hydrocarbon fuel
  • Partial oxidation of methane
  • Solid oxide fuel cell
  • Surface modification

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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