Cell, cell stack device, module, and module housing device
The cell of the present invention includes an element portion and a first layer. The element portion includes a first electrode layer, a second electrode layer and a solid electrolyte layer. The first electrode layer serves as a tubular support body. The solid electrolyte layer is located between the first electrode layer and the second electrode layer. The solid electrolyte layer contains an oxide as a primary component and a first content of a rare earth element. The solid electrolyte layer has a thickness of 30 μm or less. The solid electrolyte layer has a region devoid of the second electrode layer. The first layer is located in the region. The first layer contains the oxide as a primary component and a second content of the rare earth element. The second content is different from the first content. The first layer has a higher strength than the solid electrolyte layer.
1. A cell, comprising:
an element portion comprising:
a first electrode layer serving as a tubular support body;
a second electrode layer; and
a solid electrolyte layer located between the first electrode layer and the second electrode layer, the solid electrolyte layer containing an oxide as a primary component and a first content of a rare earth element, the solid electrolyte layer having a thickness of 30 μm or less, and having a region devoid of the second electrode layer; and
a first layer located in the region, the first layer containing the oxide as a primary component and a second content of the rare earth element, the second content being different from the first content, the first layer having a higher strength than the solid electrolyte layer.
2. A cell, comprising:
a plurality of element portions on an insulating elliptical tubular support body, each element portion comprising:
a first electrode layer located on the insulating elliptical tubular support body;
a second electrode layer; and
a solid electrolyte layer located between the first electrode layer and the second electrode layer, the solid electrolyte layer containing an oxide as a primary component and a first content of a rare earth element, the solid electrolyte layer having a thickness of 30 μm or less, and having a region devoid of the second electrode layer; and
a first layer located in the region, the first layer containing the oxide as a primary component and a second content of the rare earth element, the second content being different from the first content, the first layer having a higher strength than the solid electrolyte layer.
3. A cell, comprising:
a support body having a elliptical tubular shape, the support body comprising:
a first main face on one side in a thickness direction of the support body;
a second main face on the other side in the thickness direction;
a first portion located at one end in a length direction of the support body; and
a second portion located at the other end in the length direction;
an element portion on the first main face comprising:
a first electrode layer located on the first main face;
a second electrode layer; and
a solid electrolyte layer located between the first electrode layer and the second electrode layer, the solid electrolyte layer containing an oxide as a primary component and a first content of a rare earth element, the solid electrolyte layer having a thickness of 30 μm or less, and having a region devoid of the second electrode layer; and
a first layer located in the region, the first layer containing the oxide as a primary component and a second content of the rare earth element, the second content being different from the first content, the first layer having a higher strength than the solid electrolyte layer.
4. The cell according to 3 , wherein the region is on the first portion.
5. The cell according to claim 3 , wherein the first layer and the region are provided along the length direction.
6. The cell according to claim 3 , wherein the region is on the second portion.
7. The cell according to claim 3 , wherein a thickness of the first layer is greater than a thickness of the solid electrolyte layer.
8. The cell according to claim 3 , further comprising:
an interconnector layer on the second main face; and
a second layer located between the support body and the interconnector layer, the second layer containing the oxide as a primary component and a third content of the rare earth element, the third content being different from the first content, the second layer having a higher strength than the solid electrolyte layer.
9. The cell according to claim 8 , wherein a thickness of the second layer is greater than a thickness of the solid electrolyte layer.
10. The cell according to claim 8 , wherein the region is on the first portion, and
the second layer is provided on the first portion of the second main face, and
a length of the first layer in a longitudinal direction is less than a length of the second layer in the longitudinal direction.
11. A cell stack device comprising a plurality of the cells according to claim 1 , the plurality of cells being electrically connected.
12. The cell stack device according to claim 11 , wherein the first portion is bonded to a gas tank by an insulating bonding material.
13. A module configured to house the cell stack device described in claim 11 in a housing container.
14. A module housing device configured to house the module described in claim 13 and an auxiliary device for actuating the module in an exterior case.