초록 ▼

A sulfur dioxide gas sensor having a high selectivity of SO.sub.2 gas, and an operability at a high temperature which comprises: a solid electrolyte having oxygen ion conductivity; a detecting electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the s

A sulfur dioxide gas sensor having a high selectivity of SO.sub.2 gas, and an operability at a high temperature which comprises: a solid electrolyte having oxygen ion conductivity; a detecting electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte and containing glass and either gold or a gold alloy; and a basic electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte and containing Pt.

대표청구항 ▼

[What is claimed is:] [1.]a solid electrolyte having oxygen ion conductivity;a detecting electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte; anda basic electrode for measuring sulfur dioxide gas, electrically connected to at le

[What is claimed is:] [1.]a solid electrolyte having oxygen ion conductivity;a detecting electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte; anda basic electrode for measuring sulfur dioxide gas, electrically connected to at least a part of a surface of the solid electrolyte;wherein the detecting electrode contains(a) either gold or a gold alloy comprising 90 wt. % or more gold for measuring sulfur dioxide gas, and(b) glass containing lead oxide of 60% or more and in an amount of 1 to 10 weight % based on the weight of the gold or gold alloy.