| abstract |
On the surface of one side of the solid electrolyte layer 9 containing Zr, the intermediate layer 4 containing CeO 2 in which a rare earth element (except for Ce) is dissolved and the first electrode layer 1 are provided in this order, and the solid electrolyte The second electrode layer 7 is provided on the other surface opposite to the one surface of the layer 9, and the intermediate layer 4 includes a first layer 4a located on the solid electrolyte layer 9 side, and the first layer 4a. And a second layer 4b located on the first electrode layer 1 side. The first layer 4a has a higher rare earth element concentration than the second layer 4b. |