Single-crystal oxygen ion conductor

Details Single-crystal oxygen ion conductor Single-crystal oxygen ion conductor

1998-07-15

2000-08-22

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 33, 429 40, 204421, 205634, H01M 812

Patent

active

061069663

ABSTRACT:
A single-crystal solid oxide material, rather than a polycrystalline ceramic, is used for electrolytic and fuel-cell applications. For the electrolytic production of oxygen from carbon dioxide, a yttria-stabilized zirconia crystal is coated with platinum electrodes and encased in a platinum structure to provide a thermally stable electrolytic cell. A multilayered device is constructed by stacking crystals and spacers in alternating arrangement and by plumbing the active surfaces of the crystals in parallel through perforations drilled directly in the solid-oxide crystals, so that manifolding and sealing problems are minimized.

REFERENCES:
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patent: 4462891 (1984-07-01), Lawless
patent: 4851303 (1989-07-01), Madou et al.
patent: 5328779 (1994-07-01), Tannenberger et al.
patent: 5518830 (1996-05-01), Worrell et al.
patent: 5871859 (1999-02-01), Parise
Kaneko et al. Conductivities of Yttria-Doped Zirconia Electrolytes, Proc. the Third International Symposium on SOFC (1993), pp. 31-37, (month unknown).

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