Method for producing a Co sensors and co sensor

CO sensor 1 on the surface of the solid electrolyte substrate 2 and a sensing electrode 3 and the counter electrode 4. Sensing electrode 3 is composed of Pt were added Bi203, counter electrode 4 is composed of Pt. Sensing electrode 3 is provided with a CO selective capable of detecting the concentration of CO gas, it reacts rapidly at room temperature.