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Evaluation of Ni-YSZ Anode fabricated by Spark Plasma Sintering for SOFC Application

방전플라즈마 소결공법에 의해 제작된 SOFC용 Ni-YSZ Anode의 특성평가

  • Chang, Se-Hun (Korea Institute of Industrial Technology (KITECH)) ;
  • Choi, Jung-Chul (Korea Institute of Industrial Technology (KITECH)) ;
  • Choi, Se-Weon (Korea Institute of Industrial Technology (KITECH)) ;
  • Kim, Ho-Sung (Korea Institute of Industrial Technology (KITECH)) ;
  • Oh, Ik-Hyun (Korea Institute of Industrial Technology (KITECH))
  • Published : 2008.10.28

Abstract

SOFC (Solid Oxide Fuel Cell) Ni-YSZ anode was fabricated by the spark plasma sintering (SPS) process and its microstructure and electrical properties were investigated in this study. The spark plasma sintering process was carried out at $800{\sim}1000^{\circ}C$ for holding time of 5 min under 40 MPa. To fabricate Ni-YSZ anode, the SPS processed specimens were reduced at $800^{\circ}C$ under $H_2$ atmosphere. The reduced specimens showed relative density of $48.4{\sim}64.8%$ according to sintering temperature. And also, the electrical conductivity of reduced specimens after sintering at 900 and $1000^{\circ}C$ showed $480{\sim}600$ (S/cm) values at the measuring range of $600{\sim}900^{\circ}C$.

Keywords

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