The effect of an ultra-thin zirconia blocking layer on the performance of a 1-μm-thick gadolinia-doped ceria electrolyte solid-oxide fuel cell

Title
The effect of an ultra-thin zirconia blocking layer on the performance of a 1-μm-thick gadolinia-doped ceria electrolyte solid-oxide fuel cell
Authors
명두환홍종일윤경중김병국이해원이종호손지원
Keywords
Thin-film electrolyte solid-oxide fuel cell; Gadolinia-doped ceria; Pulsed laser deposition; Yttria-stabilized zirconia; Reduction-blocking layer
Issue Date
2012-05
Publisher
Journal of power sources
Citation
VOL 206, 91-96
Abstract
Ultra-thin (less than 200 nm) yttria-stabilized zirconia (YSZ) blocking layers are employed at the anode side of a 1- m-thick gadolinia-doped ceria (GDC) thin-film electrolyte by pulsed laser deposition. Their effects on a GDC thin-film electrolyte solid-oxide fuel cell (TF-SOFC) are presented. Without blocking layers, the open cell voltage (OCV) of the GDC TF-SOFC is about 0.6 V. By inserting the blocking layer, the OCV increases to over 1 V. As a result, the maximum power density of the TF-SOFC increases from 377 mW cm−2 to over 1 W cm−2 at 600 ◦C. The present study demonstrates the possibility of obtaining the critical performance at a low temperature regime using thin-film GDC electrolytes.
URI
http://pubs.kist.re.kr/handle/201004/42099
ISSN
03787753
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KIST Publication > Article
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