Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Small SOFC Stack Based on Anode-Supported Unit Cells and Its Power Generating Characteristics

음극지지형 단전지를 사용한 소형 SOFC 스택의 제조 및 출력특성

  • Jung, Hwa-Young (NMRC, Korea Institute of Science and Technology) ;
  • Kim, Woo-Sik (NMRC, Korea Institute of Science and Technology) ;
  • Choi, Sun-Hee (NMRC, Korea Institute of Science and Technology) ;
  • Kim, Joosun (NMRC, Korea Institute of Science and Technology) ;
  • Lee, Hae-Weon (NMRC, Korea Institute of Science and Technology) ;
  • Ko, Haengjin (Fuel Cell Vehicle Team, R&D Division for Hyundai Motor Company & Kia Motors Corporation) ;
  • Lee, Ki-Chun (Fuel Cell Vehicle Team, R&D Division for Hyundai Motor Company & Kia Motors Corporation) ;
  • Lee, Jong-Ho (NMRC, Korea Institute of Science and Technology)
  • 정화영 (한국과학기술연구원 나노재료연구센터) ;
  • 김우식 (한국과학기술연구원 나노재료연구센터) ;
  • 최선희 (한국과학기술연구원 나노재료연구센터) ;
  • 김주선 (한국과학기술연구원 나노재료연구센터) ;
  • 이해원 (한국과학기술연구원 나노재료연구센터) ;
  • 고행진 (연료전지개발팀 현대-기아 연구개발본부) ;
  • 이기춘 (연료전지개발팀 현대-기아 연구개발본부) ;
  • 이종호 (한국과학기술연구원 나노재료연구센터)
  • Published : 2004.10.01
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Abstract

In this research, $5\times5cm^2$ unit cells were fabricated via liquid condensation process and uniaxial pressing followed by the screen printing of electrolyte and cathode layer. The SOFC stack was assembled with unit cells, gasket-type sealant and metal interconnect. The stack was designed to have a single column with internal-manifold and cross-flow type gas-channels. The SOFC stack produced 15 W, which is $50\%$ of the maximum power being expected from the maximum power density of the unit cell. Controlling factors for the proper operation of the SOFC stack and other designing factors of stack manifold and gas channels were discussed.

액상응결 공정법과 일축가압성형법으로 제조된 기판위에 전해질과 양극층을 스크린 인쇄법으로 구성한 후 열처리함으로써 최종크기가 $5\times5cm^2$인 SOFC 단전지를 제조하였다. 본 연구에서는 이들 단전지와 인코넬 합금으로 제조된 접속자 그리고 가스켓형의 밀봉재를 이용하여 스택을 구성하였다. 본 연구에 사용된 스택은 연료가스와 산화가스가 교차되는 형태의 가스채널을 가지며 가스매니폴드가 내부에 구성되어 있는 형태로 설계되었다. 제작된 3단 스택의 성능을 평가해 본격과 15W 정도의 최고출력을 나타내었는데 이는 단전지 출력성능으로부터 예측된 최고출력치의 $50\%$ 정도에 해당되는 출력이었다. 본 연구에서는 이러한 스택성능에 영향을 주는 조정인자들과 스택디자인 인자들에 대한 분석을 수행하였다.

Keywords

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