Process for preparing pieces composed of solid electrolyte based

Details Process for preparing pieces composed of solid electrolyte based Process for preparing pieces composed of solid electrolyte based

1981-01-27

1982-12-21

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

264 65, 423608, 429 33, H01M 812

Patent

active

043650112

ABSTRACT:
The invention relates to a process for preparing pieces of solid electrolyte based on stabilized zircon having an improved conductivity due to the addition of Al.sub.2 O.sub.3. According to the process, an alcoholic solution is prepared of a salt of zirconium, a salt of a metal stabilizing zircon such as yttrium and a salt of aluminium; from this solution is formed a coprecipitate of hydroxide of zirconium, hydroxide of said metal and hydroxide of aluminium; the precipitate is washed by means of a hydrophilic solvent to eliminate the traces of water, then is dried and calcined in air; a piece of solid electrolyte is then formed by compression and sintering from the powder obtained.
The invention is applicable to the production of solid electrolytes for cell for electrolysis of water vapor or for fuel cell.

REFERENCES:
patent: 1624162 (1927-04-01), Hendrik
patent: 2599326 (1952-06-01), Gruen et al.
Kiukkola et al, Measurements on Galvanic Cells Involving Solid Electrolytes, Tech. Report on Thermodynamics of Metal Solutions, 8/56, pp. 1-4, Dept. of Metallurgy MIT.

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