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The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Performance of SOFC According to Thickness of Shell with Ni-YSZ Core-shell

Ni-YSZ Core-shell에서 Shell의 두께에 따른 SOFC의 출력특성

  • CHOI, BYUNG-HYUN (Energy material Center, Korea Institute of Ceramics Engineering & Technology) ;
  • HONG, SUN-KI (Energy material Center, Korea Institute of Ceramics Engineering & Technology) ;
  • JI, MI-JUNG (Energy material Center, Korea Institute of Ceramics Engineering & Technology)
  • 최병현 (한국세라믹기술원 에너지소재센터) ;
  • 홍선기 (한국세라믹기술원 에너지소재센터) ;
  • 지미정 (한국세라믹기술원 에너지소재센터)
  • Received : 2017.11.21
  • Accepted : 2017.12.29
  • Published : 2017.12.31
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Abstract

SOFC anode fabricated core-shell using machano-fusion method using core with submicron size Ni, nano size YSZ for shell. Using prepared core-shell, depending on the thickness of the shell, we studied how the characteristics of sintering and SOFC cell change by sintering the anode. The Ni-YSZ core-shell has a Ni core of 0.5 to $1.2{\mu}m$ over 2 to 7 YSZ of 15 to 20 nm is, and as the high speed mixing time increases, the YSZ number increases and the shell thickness becomes uniform increased. When the fuel electrode is manufactured with core-shell, it has superior sintering property, has grain of uniform size compared with the one synthesized by general mixing, the falling path is short, the conductors (electrons and ions) connection is excellent, the electrical conductivity has become excellent. The thicker the shell, the lower the electrical conductivity. When the thickness of shell ranged from 46 to 139 nm and 61 to 81 nm, the performance was the highest and the ASR was the smallest.

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References

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