To provide a procedure capable of advantageously improving the measuring characteristics of a gas component to be measured, in a gas sensor element.
This gas sensor element including an adsorptive gas component, formed by bonding an adsorption component to oxygen with a concentration of 1,000 ppm or higher, and including a combustible gas as much as a quantity to be oxidized substantially stoichiometrically by oxygen, generated by reduction of the adsorptive gas component, wherein a measuring electrode 32 comprising a cermet, formed of a noble metal material and a ceramic material is formed in a prescribed solid electrolyte 10 in a treatment atmosphere, where the oxygen concentration is limited to below 0.2% is heated at a temperature 600-1,000°C for as long as 3-24 hours. Hereby, the adsorbing gas components are reduced, and the adsorbing components in the adsorptive gas components are adsorbed onto the measuring electrode 32 of the gas sensor element, so that the noble metal material constituting the measuring electrode 32 is reduced.
RI SOSAI
SHINDO HIROYUKI
| JPH11148913A | 1999-06-02 | |||
| JPH03216546A | 1991-09-24 | |||
| JP2000171436A | 2000-06-23 | |||
| JPS57131047A | 1982-08-13 | |||
| JPS55141664A | 1980-11-05 |
Masahiro Nakashima