Highly conductive electrolyte composites containing glass and ce

Details Highly conductive electrolyte composites containing glass and ce Highly conductive electrolyte composites containing glass and ce

1990-07-17

1992-10-13

Bell, Mark L.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429193, 501 32, 501128, H01M 810, H01M 618, C03C 1400

Patent

active

051549875

ABSTRACT:
An electrolyte composite is manufactured by pressurizing a mixture of sodium ion conductive glass and an ionically conductive compound at between 12,000 and 24,000 pounds per square inch to produce a pellet. The resulting pellet is then sintered at relatively lower temperatures (800.degree. C.-1200.degree. C.), for example 1000.degree. C., than are typically required (1400.degree. C.) when fabricating single constituent ceramic electrolytes. The resultant composite is 100 percent conductive at 250.degree. C. with conductivity values of 2.5 to 4.times.10.sup.-2 (ohm-cm).sup.-1. The matrix exhibits chemical stability against sodium for 100 hours at 250.degree. to 300.degree. C.

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