Multiscale structured low-temperature solid oxide fuel cells with 13 W power at 500 °C

Title
Multiscale structured low-temperature solid oxide fuel cells with 13 W power at 500 °C
Authors
김형철손지원신성수김정훈배경택이강택김상문최만수
Keywords
microscale ceramic patterning; three-dimensional architecturing; solid oxide fuel cells; Imprintingprocess; Interface structure
Issue Date
2020-10
Publisher
Energy & environmental science
Citation
VOL 13, NO 10-3468
Abstract
Low-temperature solid oxide fuel cells (LT-SOFC) operating below 650 1C 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 1C 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
URI
http://pubs.kist.re.kr/handle/201004/71940
ISSN
1754-5692
Appears in Collections:
KIST Publication > Article
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