Method of making an ion conductive gas sensor body with a...

Details Method of making an ion conductive gas sensor body with a... Method of making an ion conductive gas sensor body with a...

H - Electricity

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356/196

H01L 21/64 (2006.01) C04B 35/486 (2006.01) H01M 8/12 (2006.01)

Patent

CA 1123969

ABSTRACT OF THE DISCLOSURE. To increase the response speed and sensitivity, while providing higher output voltages and permitting higher loading of the electrodes of gas sensors, particularly exhaust gas sensors to determine the transition of exhaust gases from internal combustion engines between reducing and oxidizing state, the sintering activity of the electrode which, typically, a cermet electrode, is selected to be less than that of the solid electrolyte body so that the resulting pore structure will be more open than that of the solid electrolyte body. The electrodes, essentially, consist of finely divided ceramic material, such as zirconium oxide, and finely divided electron conductive material such as platinum. On the pre-sintered solid electrolyte body, a mixture of the ceramic and the electron conductive material is applied in which the ceramic of the lattice support structure for the cermet electrode is less sinter-active than the ceramic of the solid electrolyte body, resulting in the improved pore structure of the cermet electrode layer.

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