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학술지 Multiscale Structured Low-temperature Solid Oxide Fuel Cells with 13 W Power at 500 °C
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저자
신성수, 김정훈, 배경택, 이강택, 김상문, 손지원, 최만수, 김형철
발행일
202010
출처
Energy & Environmental Science, v.13 no.10, pp.3459-3468
ISSN
1754-5692
출판사
Royal Society of Chemistry (RSC)
DOI
https://dx.doi.org/10.1039/d0ee00870b
협약과제
20VB1100, 인체 열해석 기반 연성열전모듈 설계 및 시스템 패키징 기술 (본과제명:Wearable Device 용 열전발전 시스템 기술 개발) (5차년도), 문승언
초록
Low-temperature solid oxide fuel cells (LT-SOFC) operating below 650 °C have attracted attention as a next-generation fuel cell. Although much effort has been paid to develop such fuel cells, it still remains challenging to satisfy all the requirements ensuring practical operation, such as power output and durability. Here we demonstrate 4 cm × 4 cm multiscale structured LT-SOFCs having a record high power output of 13 W per single cell at 500 °C via a large-area ceramic micropatterning and thin-film depositions. Our cell exhibits excellent long-term stability with performance degradation of less than 0.05% per 500 h. Quantitative microstructure and electrochemical analyses reveal that the proposed cell significantly lowered both ohmic and polarization losses than the reference planar cells. This work features a facile and powerful tool to implement robust and large-area 3D architectures in LT-SOFCs, which opens up opportunities to produce practical LT-SOFC systems satisfying both power and durability.
KSP 제안 키워드
3D architectures, High power, LT-SOFCs, Long-Term Stability, Low temperature(LT), Next-generation, Planar cells, Polarization losses, SOFC systems, Single cell, Solid oxide fuel cells(SOFCs)