Glass electrolyte composition

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method

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501 55, 501 73, 501103, 501153, 501154, H01M 618

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active

045446148

ABSTRACT:
An ionically conductive glass is disclosed for use as electrolyte in a high temperature electrochemical cell, particularly a cell with sodium anode and sulfur cathode. The glass includes the constituents Na.sub.2 O, ZrO.sub.2, Al.sub.2 O.sub.3 and SiO.sub.2 in selected proportions to be a single phase solid solution substantially free of crystalline regions and undissolved constituents. Other advantageous properties are an ionic conductivity in excess of 2.times.10.sup.-3 (ohm-cm).sup.-1 at 300.degree. C. and a glass transition temperature in excess of 500.degree. C.

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patent: 3829331 (1974-08-01), Tsang
patent: 4223077 (1980-09-01), Taylor
patent: 4237196 (1980-12-01), Gutmann et al.
patent: 4432891 (1984-02-01), Susman et al.
patent: 4465744 (1984-08-01), Susman et al.
Development of a Sodium-Sulfur Battery Suitable for Use by Elec. Utilities & for Vehicular Propulsion", U.S. DOE 1982, pp. 3-10, 32, 102-106.
Solid Electrolytes: Fundamentals & Applications Sym., 166 Meeting Elec. Soc., N.O. LA, Oct. 1984, "Invest. of Sod.-Ion Cond. Fluids in Na.sub.2 O-ZrO.sub.2 -Al.sub.2 O.sub.3 -SiO.sub.2 ".
"Glass Electrolytes for Sodium/Sulfur Cells, 6th DOE Electrochem. Contractor's Review, Jun. 1984, pp. 26-28.

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