Cell, cell stack device, module, and module housing device

Patent metadata

Field	Value
Publication number	US-2016372774-A1
Application number	US-201414898910-A
Country	US
Kind code	A1
Filing date	Jun 27, 2014
Priority date	Jun 27, 2013
Publication date	Dec 22, 2016
Grant date	—

Abstract

Problem: To provide a cell capable of suppressing cracking, a cell stack device, a module, and a module housing device. SOLUTION: The cell of the present invention comprises a first layer ( 7 ), in a region of a solid electrolyte layer ( 4 ) devoid of a second electrode layer ( 6 ). The first layer ( 7 ) contains an oxide as a primary component with a content of the rare earth element, the content different from a content of the rare earth element in the solid electrolyte layer ( 4 ). The oxide is same as an oxide contained as a primary component in the solid electrolyte layer ( 4 ) and the first layer ( 7 ) has a higher strength than the solid electrolyte layer ( 4 ). Furthermore, the cell stack device of the present invention comprises a plurality of these cells 100, 200 , and 300 , and is configured to electrically connect the plurality of cells. Furthermore, the module of the present invention is configured to house the cell stack device in a housing container. Additionally, the module housing device of the present invention is configured to house the above module and an auxiliary device for actuating the module in an exterior case.

First claim

1 .- 14 . (canceled)

15 . 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.

16 . 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.

17 . 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.

18 . The cell according to 17 , wherein the region is on the first portion.

19 . The cell according to claim 17 , wherein the first layer and the region are provided along the length direction.

20 . The cell according to claim 17 , wherein the region is on the second portion.

21 . The cell according to claim 17 , wherein a thickness of the first layer is greater than a thickness of the solid electrolyte layer.

22 . The cell according to claim 17 , 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.

23 . The cell according to claim 22 , wherein a thickness of the second layer is greater than a thickness of the solid electrolyte layer.

24 . The cell according to claim 22 , 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.

25 . A cell stack device comprising a plurality of the cells according to claim 15 , the plurality of cells being electrically connected.

26 . The cell stack device according to claim 25 , wherein the first portion is bonded to a gas tank by an insulating bonding material.

27 . A module configured to house the cell stack device described in claim 25 , in a housing container.

28 . A module housing device configured to house the module described in claim 27 and an auxiliary device for actuating the module in an exterior case.

Assignees

• Kyocera Corp

Inventors

• Koi Makoto

Classifications

• C25B1/04 Primary

  by electrolysis of water · CPC title

• H01M8/2457

  with both reactants being gaseous or vaporised · CPC title

• H01M8/243

  Grouping of unit cells of tubular or cylindrical configuration · CPC title

• C25B1/10

  Chemistry & Metallurgy · mapped topic

• H01M4/881

  Electrolytic membranes · CPC title