Cited 9 time in webofscience Cited 12 time in scopus

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

Title
Multiscale structured low-temperature solid oxide fuel cells with 13 W power at 500 degrees C
Authors
Shin, Sung SooKim, Jeong HunBae, Kyeong TaekLee, Kang-TaekKim, Sang MoonSon, Ji-WonChoi, MansooKim, Hyoungchul
DGIST Authors
Shin, Sung Soo; Kim, Jeong Hun; Bae, Kyeong Taek; Lee, Kang-Taek; Kim, Sang Moon; Son, Ji-Won; Choi, Mansoo; Kim, Hyoungchul
Issue Date
2020-10
Citation
Energy and Environmental Sciences, 13(10), 3459-3468
Type
Article
Article Type
Article
Keywords
HIGH-PERFORMANCE CATHODEPEROVSKITECOMPOSITEOPTIMIZATIONFABRICATIONSTABILITYELECTRODEIMPRINTDENSITYANODE
ISSN
1754-5692
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. © The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/12794
DOI
10.1039/d0ee00870b
Publisher
Royal Society of Chemistry
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