Support tube for high temperature solid electrolyte electrochemi

Details Support tube for high temperature solid electrolyte electrochemi Support tube for high temperature solid electrolyte electrochemi

1985-03-15

1986-06-24

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 31, 252 1, H01M 812

Patent

active

045967504

ABSTRACT:
Disclosed is a compound having a fluorite-like structure comprising a solid solution having the general formula [(ZrO.sub.2).sub.1-x (MO.sub.s).sub.x ].sub.1-y [(La.sub.m A.sub.1-m).sub.2-z (Mn.sub.n B.sub.1-n).sub.z O.sub.r ].sub.y where MO.sub.5 is an oxide selected from the group consisting of calcia, yttria, rare earth oxides, and mixtures thereof, x is about 0.1 to 0.3, y is about 0.005 to about 0.06, z is about 0.1 to about 1.9, A is yttrium, rare earth element, alkaline earth element, or mixture thereof, B is iron, nickel, cobalt, or mixture thereof, m is 0.3 to 1, n is 0.5 to 1, and r is 2 to 4. A porous tube made from such a composition can be coated with an electrically conducting mixed oxide electrode such as lanthanum manganite, and can be used in making high temperature electrochemical cells such as solid electrolyte fuel cells.

REFERENCES:
patent: 341728 (1968-11-01), Fullman et al.
patent: 3400054 (1968-09-01), Ruka et al.
patent: 3436269 (1969-04-01), Mitoff
patent: 3525646 (1970-08-01), Tannenberger et al.
patent: 4395468 (1983-07-01), Isenberg
patent: 4490444 (1984-12-01), Isenberg
Kotlyer et al, Structure and Electrical Conductivity in the Zirconium Oxide-Yttrium-Oxide-Ferric Oxide and Zirconium Oxide-Yttrium Oxide-Manganes Oxide Systems, Akademiya Nauk SSSR. Ural'skiy Filial, Institur Elektro-Khimii, Trudy, No. 16, pp. 128-134 (1970).

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