Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Anode-Supported SOFC Single Cells via Tape-Casting of Thin Tapes and Co-Firing

박막 테이프캐스팅과 동시소성에 의한 연료극 지지형 SOFC 단전지 제조

  • Moon, Hwan (Department of Ceramic Engineering, Yonsei University) ;
  • Kim, Sun-Dong (Department of Ceramic Engineering, Yonsei University) ;
  • Hyun, Sang-Hoon (Department of Ceramic Engineering, Yonsei University) ;
  • Kim, Ho-Sung (Korea Institute of Industrial Technology)
  • 문환 (연세대학교 세라믹공학과) ;
  • 김선동 (연세대학교 세라믹공학과) ;
  • 현상훈 (연세대학교 세라믹공학과) ;
  • 김호성 (한국생산기술연구원)
  • Published : 2006.12.31
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Abstract

An anode-supported SOFC single cell having $5{\mu}m$ thin electrolyte was fabricated cost-effectively by tape casting, laminating, and co-filing of anode (NiO-YSZ), cathode (LSM-YSZ), and electrolyte (YSZ) components. The optimal slurry compositions of the green tapes for SOFC components were determined by an analysis of the mean diameter, the slurry viscosity, the tensile strength/strain of the green tapes, and their green microstructures. The single cells with a dense electrolyte and porous electrodes could be co-fired successfully at $1325\sim1350^{\circ}C$ by controlling the contents of pore former and the ratio of coarse YSZ and fine YSZ in the anode and the cathode. The single cell co-fired at $1350^{\circ}C$ showed $100.2mWcm^{-2}$ of maximum power density at $800^{\circ}C$ but it was impossible to apply it to operate at low temperature because of low performance and high ASR, which were attributed to formation of the secondary phases in the cathode and the interface between the electrolyte and the cathode.

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References

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