期刊
JOURNAL OF POWER SOURCES
卷 327, 期 -, 页码 401-407出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.07.080
关键词
Solid oxide fuel cells; Spin coating; Yttria-stabilized zirconia; Gadolinia-doped ceria
资金
- International Research & Development Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning, South Korea [NRF-2014K1A3A1A47067412]
- The Brain Korea 21 Plus program [21A20131712520]
Thin ceramic bi-layered membrane comprising yttria-stabilized zirconia (YSZ) and gadolinia-doped ceria (GDC) is fabricated by the cost-effective slurry spin coating technique, and it is evaluated as an electrolyte of solid oxide fuel cells (SOFCs). It is demonstrated that the slurry spin coating method is capable of fabricating porous ceramic films by adjusting the content of ethyl-cellulose binders in the source slurry. The porous GDC layer deposited by spin coating under an optimal condition functions satisfactorily as a cathode-electrolyte interlayer in the test SOFC stack. A 2-mu m-thick electrolyte membrane of the spin coated YSZ/GDC bi-layer is successfully deposited as a dense and stable film directly on a porous NiO-YSZ anode support without any interlayers, and the SOFC produces power output over 200 mW cm(-2) at 600 degrees C, with an open circuit voltage close to 1 V. Electrochemical impedance spectra analysis is conducted to evaluate the performance of the fuel cell components in relation with the microstructure of the spin-coated layers. (C) 2016 Elsevier B.V. All rights reserved.
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