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  • 02월 22일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Development of 1kW Class Anode-Supported Tubular SOFC Stack

등록일
2008년 2월 27일 10시 42분 17초
접수번호
1478
발표코드
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발표시간
금 11시 : 40분
발표형식
심포지엄
발표분야
전기화학 - Electrochemistry in Green Energy Technology Ⅰ
저자 및
공동저자
송락현
한국에너지 기술연구원,
1 kW class anode-supported tubular solid-oxide fuel cell (SOFC) stack for use as an auxiliary power unit (APU) for an automobile is fabricated and characterized. High polarizations are established across the anode tube wall and anode current collector, which leads to a significant decrease in the power density of a single cell. Thus, in this study, in order to reduce the ohmic resistance caused by anode current collectors, a gas supply tube and Ni wires were used as the anode current collectors. Simultaneously, to reduce contact resistance between the anode wall and the anode current collector, Ni felt and Ni paste were used at the interface between the anode tube wall and the Ni wire, respectively, as well as at the interface between the Ni wire and the gas supply tube, respectively. A high-power single cell was fabricated that showed a cell performance of 0.60 W/cm2 at 0.7V and 750oC. The SOFC stack showed a high power density of 0.35 W/cm2; moreover, due to the good thermo-mechanical properties of the micro-tubular SOFC stack, the start-up time could be reduced by 1.5 h, which corresponds to an increased heating rate of 8o/min. Moreover, in order to verify the durability of the stack under various load conditions, a long-term stability test result for the developed SOFC stack was conducted under loads of 10A, 20A and 50A.

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