Fabrication and performance of thin-film YSZ solid oxide fuel cells

A new technique for fabricating dense YSZ thin-film electrolytes (between 3 and 10 micron) on porous electrode substrates was used to make planar solid-oxide fuel cells (SOFCs). The YSZ electrolyte is strongly bonded to the Ni-YSZ and La0.89Sr0.1MnO3 (LSM)-YSZ electrode substrates, and the power den...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2001-01, Vol.148 (8), p.A864-A868
Main Authors: CONGHUA WANG, WORRELL, Wayne L, SEUNGDOO PARK, VOHS, John M, GORTE, Ray J
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
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Summary:A new technique for fabricating dense YSZ thin-film electrolytes (between 3 and 10 micron) on porous electrode substrates was used to make planar solid-oxide fuel cells (SOFCs). The YSZ electrolyte is strongly bonded to the Ni-YSZ and La0.89Sr0.1MnO3 (LSM)-YSZ electrode substrates, and the power density of a Ni-YSZ/YSZ/LSM-YSZ cell is over 0.8 W/cm2 at 800 C. Initial investigations of doped YSZ mixed-conducting electrodes in the thin-film YSZ cells indicate that Tb-and Ti-doped YSZs enhance cell power densities from 15 to 50% at 800 C. New Cu-CeO2-YSZ anodes for the dry oxidation of methane were also investigated. Initial results show that the Cu-CeO2-based anodes are stable in hydrocarbon fuels, and that the principal anodic reaction is a direct, electrocatalytic oxidation of the hydrocarbon fuel. 24 refs.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.1382588