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Influence of the Thin Anode Geometry on the Performance of Molten Carbonate Fuel Cells

얇은 연료극 구조가 용융탄산염 연료전지 성능에 미치는 영향

  • Seo, Dong-Ho (Center for Fuel Cell Reseach, Korea Institute of Science and Technology) ;
  • Park, Dong-Nyeok (Center for Fuel Cell Reseach, Korea Institute of Science and Technology) ;
  • Yoon, Sung-Pil (Center for Fuel Cell Reseach, Korea Institute of Science and Technology) ;
  • Han, Jong-Hee (Center for Fuel Cell Reseach, Korea Institute of Science and Technology) ;
  • Oh, In-Hwan (Center for Fuel Cell Reseach, Korea Institute of Science and Technology)
  • 서동호 (한국과학기술연구원 연료전지연구센터) ;
  • 박동녘 (한국과학기술연구원 연료전지연구센터) ;
  • 윤성필 (한국과학기술연구원 연료전지연구센터) ;
  • 한종희 (한국과학기술연구원 연료전지연구센터) ;
  • 오인환 (한국과학기술연구원 연료전지연구센터)
  • Received : 2011.09.23
  • Accepted : 2011.10.21
  • Published : 2011.10.30

Abstract

The Ni-Al anodes of the molten carbonate fuel cell (MCFC) with three different structures were successfully fabricated in order to reduce the thickness of the anode down to 0.3 mm; one was the non-supported anode made by a conventional tape casting method, and others were the supported anodes made by lamination or direct casting on the nickel screen. It was seen from the physical analyses and cell operation that the supported thin anodes made by direct casting showed good mechanical strength and cell performance because of a good contact between the anode materials and the support. The single cell using the above anode showed the cell voltage of 0.858 V at the current density of 150$mA/cm^2$ with the nitrogen cross-over of only 0.6% at the operation time of 1,000 h, which was similar to the performance of the conventional thick (0.7 mm) anode. The ability to utilize a thin configuration of anode should cut down the amount of nickel alloy and consequently reduce its manufacturing cost.

Acknowledgement

Supported by : Korea Institute of Energy Techology Evalution and Planning (KETEP)

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