Cell, cell stack device, module and module containing device

Patent metadata

Field	Value
Publication number	US-2019067710-A1
Application number	US-201716079136-A
Country	US
Kind code	A1
Filing date	Feb 16, 2017
Priority date	Feb 25, 2016
Publication date	Feb 28, 2019
Grant date	—

Abstract

A cell may include a columnar support having a first main face and a second main face; and an element comprising a first electrode layer, a solid electrolyte layer, and a second electrode layer laminated in sequence on the first main face of the support. The porosity of at least one of the two end portions of the support in the longitudinal direction L may be lower than that of the central portion of the support in the longitudinal direction L.

First claim

1 . A cell comprising:
a columnar support having a first main face and a second main face; and an element comprising a first electrode layer, a solid electrolyte layer, and a second electrode layer, laminated in sequence on the first main face of the support, wherein the porosity of at least one of two end portions of the support in the longitudinal direction is lower than that of the central portion of the support in the longitudinal direction.

2 . The cell according to claim 1 , wherein
the solid electrolyte layer comprises an oxide including a rare earth oxide, the solid electrolyte layer and a reinforcement layer are laminated in sequence on the first main face at one of the end portions of the support, the reinforcement layer comprising the same oxide as the solid electrolyte layer and including the rare earth oxide in a different content from the solid electrolyte layer, the reinforcement layer is laminated on the second main face, and the porosity at the first main face of the support at one of the end portions is lower than that in the second main face.

3 . The cell according to claim 1 , wherein
the central portion on the second main face of the support is provided with an interconnection layer comprising a lanthanum chromite, the porosity of the second main face of the support at the central portion being lower than that of the first main face.

4 . A cell stack assembly comprising a plurality of the cells
according to claim 1 , wherein one of the end portions of the support is bonded to a manifold with a bonding agent.

5 . A module accommodating the cell stack assembly according to claim 4 in a container.

6 . A module-accommodating assembly comprising an exterior case accommodating the module according to claim 5 and accessories for operation of the module.

Assignees

• Kyocera Corp

Inventors

• Koi Makoto

Classifications

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title

• H01M8/1246

  the electrolyte consisting of oxides · CPC title

• H01M8/2475

  Enclosures, casings or containers of fuel cell stacks · CPC title

• H01M8/2484

  characterised by external manifolds · CPC title

• H01M8/0271 Primary

  Sealing or supporting means around electrodes, matrices or membranes · CPC title