| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas sensor element which can restrain degradation in durability of catalytic power, while preventing deterioration of response and output skew. <P>SOLUTION: The gas sensor element comprises an oxygen ion-conductive solid electrolyte, a measured gas side electrode and a reference gas side electrode, respectively provided on one surface and the other surface of the solid electrolyte, a diffusion resistance layer 12 which allows a measured gas to be transmitted while covering the measured gas side electrode, and a catalyst support trap layer 2 supporting catalyst 22 formed on lateral surface 120 of the diffusion resistance layer 12. The catalyst support trap layer 2 consists of many metal oxide particles 21 and catalyst 22, supported to the metal oxide particles 21, the average thickness d of which is 20-200 μm, and also supported amount of the catalyst 22 to gross weight of the catalyst support trap layer 2 is 0.1-2 wt.%. <P>COPYRIGHT: (C)2007,JPO&INPIT |
