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Evaluation of Micro-Tubular SOFC: Cell Performance with respect to Current Collecting Method

마이크로 원통형 SOFC 특성평가: 집전방식에 따른 단위전지의 전기화학적 특성

  • Kim, Hwan (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Lee, Jong-Won (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Lee, Seung-Bok (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Lim, Tak-Hyoung (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Park, Seok-Joo (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Song, Rak-Hyun (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research) ;
  • Shin, Dong-Ryul (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
  • 김환 (한국에너지기술연구원 수소연료전지연구단) ;
  • 이종원 (한국에너지기술연구원 수소연료전지연구단) ;
  • 이승복 (한국에너지기술연구원 수소연료전지연구단) ;
  • 임탁형 (한국에너지기술연구원 수소연료전지연구단) ;
  • 박석주 (한국에너지기술연구원 수소연료전지연구단) ;
  • 송락현 (한국에너지기술연구원 수소연료전지연구단) ;
  • 신동열 (한국에너지기술연구원 수소연료전지연구단)
  • Received : 2012.01.26
  • Accepted : 2012.02.24
  • Published : 2012.02.28

Abstract

This paper presents the characterization of micro-tubular SOFCs using three different anode current collecting methods of inlet current collection (IC), both current collection (BC) and total current collection (TC). The maximum power densities of SOFCs at $750^{\circ}C$ using IC, BC and TC were 56 mW/$cm^2$ (0.43 V, 0.13 A/$cm^2$), 236 mW/$cm^2$ (0.43 V, 0.55 A/$cm^2$) and 261 mW/$cm^2$ (0.43 V, 0.61 A/$cm^2$) respectively. It was confirmed by impedance spectroscopy that both the polarization resistance and the ohmic resistance were dramatically increased at SOFC with IC.

Keywords

Tubular SOFC;Anode-support;Current collection

Acknowledgement

Grant : 250W 군용 SOFC 전원개발

Supported by : 민군겸용기술센터

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