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Journal Article Multiscale Structured Low-temperature Solid Oxide Fuel Cells with 13 W Power at 500 °C
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Authors
Sung Soo Shin, Jeong Hun Kim, Kyung Taek Bae, Kang-Taek Lee, Sang Moon Kim, Ji-Won Son, Mansoo Choi, Hyoungchul Kim
Issue Date
2020-10
Citation
Energy & Environmental Science, v.13, no.10, pp.3459-3468
ISSN
1754-5692
Publisher
Royal Society of Chemistry (RSC)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1039/d0ee00870b
Abstract
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 Keywords
3D architecture, Electrochemical analyses, High power, Low-temperature solid oxide fuel cells(LT-SOFC), Next-generation, Planar cells, Polarization losses, SOFC systems, Single cell, fuel cells(FCs), large area