Solid electrolyte type gas sensor

Details Solid electrolyte type gas sensor Solid electrolyte type gas sensor

1997-02-19

1998-06-16

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204421, 204426, 205784, G01N 27407

Patent

active

057664331

ABSTRACT:
A CO.sub.2 gas sensor using a solid reference electrode in combination with a lithium ion conductive solid electrolyte which is at dissociative equilibrium with CO.sub.2 gas, characterized in that the solid reference electrode is made of a lithium containing, mixed transition metal oxide conductor which is of the same conduction type as the solid electrolyte. Further, the solid electrolyte comprises a complex carbonate containing LiAlO.sub.2 as an aggregate. Furthermore, a mixed electrode is used for the solid-electrolyte type gas sensor, which is prepared by the steps of: mixing a Au powder or paste with a powder of an oxide excluding Al.sub.2 O.sub.3 ; rendering a resultant mixture to a paste; applying the paste onto a solid electrolyte; and sintering the applied paste.

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