The potential and challenges of thin-film electrolyte and nanostructured electrode for yttria-stabilized zirconia-base anode-supported solid oxide fuel cells

Authors
Noh, Ho-SungYoon, Kyung JoongKim, Byung-KookJe, Hae-JuneLee, Hae-WeonLee, Jong-HoSon, Ji-Won
Issue Date
2014-02-01
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.247, pp.105 - 111
Abstract
Thin-film electrolytes and nanostructured electrodes are essential components for lowering the operation temperature of solid oxide fuel cells (SOFCs); however, reliably implementing thin-film electrolytes and nano-structure electrodes over a realistic SOFC platform, such as a porous anode-support, has been extremely difficult. If these components can be created reliably and reproducibly on porous substrates as anode supports, a more precise assessment of their impact on realistic SOFCs would be possible. In this work, structurally sound thin-film and nano-structured SOFC components consisting of a nanocomposite NiO-yttria-stabilized zirconia (YSZ) anode interlayer, a thin YSZ and gadolinia-doped ceria (GDC) bi-layer electrolyte, and a nano-structure lanthanum strontium cobaltite (LSC)-base cathode, are sequentially fabricated on a porous NiO-YSZ anode support using thin-film technology. Using an optimized cell testing setup makes possible a more exact investigation of the potential and challenges of thin-film electrolyte and nanostructured electrode-based anode-supported SOFCs. Peak power densities obtained at 500 degrees C surpass 500 mW cm(-2), which is an unprecedented low-temperature performance for the YSZ-based anode-supported SOFC. It is found that this critical, low-temperature performance for the anode-supported SOFC depends more on the electrode performance than the resistance of the thin-film electrolyte during lower temperature operation. (C) 2013 Elsevier B.V. All rights reserved.
Keywords
PULSED-LASER DEPOSITION; PERFORMANCE; SOFC; MEMBRANES; MICROSTRUCTURE; TEMPERATURE; FABRICATION; CATHODES; COMPOSITE; DIFFUSION; PULSED-LASER DEPOSITION; PERFORMANCE; SOFC; MEMBRANES; MICROSTRUCTURE; TEMPERATURE; FABRICATION; CATHODES; COMPOSITE; DIFFUSION; Solid oxide fuel cell; Thin-film electrolyte; Nanostructure electrode; Pulsed-laser deposition; Anode support; Low-temperature performance
ISSN
0378-7753
URI
https://pubs.kist.re.kr/handle/201004/127115
DOI
10.1016/j.jpowsour.2013.08.072
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KIST Article > 2014
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