Patent ID: 8088264
Filing Date: 2012-01-03
Classification: G01N

Abstract:
1. A gas sensor element for detecting a specific gas component contained in a gas to be measured, said gas sensor element comprising: a solid electrolyte layer; a first electrode disposed on the solid electrolyte layer; a second electrode disposed on the solid electrolyte layer and paired with the first electrode; and a particle dispersed layer disposed on one of the first electrode and the second electrode such that the gas to be measured is introduced from outside of the gas sensor element and passes through the particle dispersed layer to at least one of the first electrode and the second electrode, wherein the particle dispersed layer comprises: a first porous layer comprising a first ceramic porous body which does not include noble metal particles dispersed therein; and a second porous layer provided on the first porous layer and comprising a second ceramic porous body and noble metal particles dispersed therein, and wherein the second porous layer defines a surface region between an outermost protruding point and a an outermost recessed point of the particle dispersed layer in the thickness direction.