Elevation of Strength of the Anode-Substrate Material of Hydrogen and Hydrocarbon Solid-Oxide Fuel Cells

We study the microstructure, strength, and micromechanisms of fracture of 50%(ZrO 2 –4 mole% Y 2 O 3 –2 mole% CeO 2 –2 wt.% Al 2 O 3 )–50% (NiO–5 wt.% CuO) ceramics in the as-sintered state after one-time reduction and after the proposed procedure of cyclic redox treatment at 600°C in Ar–5 vol.% H 2...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2022-11, Vol.58 (3), p.343-349
Main Authors: Vasyliv, B. D., Podhurska, V. Ya, Ostash, O. P., Danilenko, I. А., Shylo, A. V.
Format: Article
Language:English
Subjects:
Aluminum oxide
Ceramic materials
Ceramics
Cerium oxides
Cermets
Characterization and Evaluation of Materials
Chemistry and Materials Science
Fuel cell industry
Fuel cells
Gas mixtures
Grain size
Hydrogen
Materials Science
Sintering
Solid Mechanics
Solid oxide fuel cells
Structural Materials
Substrates
Yttrium oxide
Zirconium dioxide
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Summary:We study the microstructure, strength, and micromechanisms of fracture of 50%(ZrO 2 –4 mole% Y 2 O 3 –2 mole% CeO 2 –2 wt.% Al 2 O 3 )–50% (NiO–5 wt.% CuO) ceramics in the as-sintered state after one-time reduction and after the proposed procedure of cyclic redox treatment at 600°C in Ar–5 vol.% H 2 and N 2 –10 vol.% H 2 –5 vol.% CO 2 gas mixtures. It is shown that the elevated strength of cermets of this system is caused both by lowering of the Y 2 O 3 content from traditional 8 mole % to 4 mole % and by about a twofold decrease in the grain sizes of the original nickel phase after redox cycling. The efficiency of this kind of treatment in improving the properties of the anode-substrate in hydrogen and hydrocarbon solid-oxide fuel cells is confirmed.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-023-00669-3