Patent ID: 11888198
Assignee: KYOCERA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A cell comprising:
a first electrode layer;
a solid electrolyte layer on the first electrode layer, the solid electrolyte layer containing Zr;
a middle layer on the solid electrolyte layer, the middle layer containing CeO2 which contains Ce and a rare earth element other than Ce;
a second electrode layer on the middle layer; and
a boundary region between the solid electrolyte layer and the middle layer, the boundary region including a basing point at which a molarity of the Ce and a molarity of the Zr are equal;
wherein in a top view, a part of the boundary region which is overlapped with an outer-peripheral portion of the middle layer is defined as a first boundary region, and another part of the boundary region which is overlapped with a center portion of the middle layer is defined as a second boundary region, and
a Ce content of at least a part of the first boundary region is different from a Ce content of the second boundary region.