Solid oxide cell stack

Patent metadata

Field	Value
Publication number	US-2024213509-A1
Application number	US-202318204534-A
Country	US
Kind code	A1
Filing date	Jun 1, 2023
Priority date	Dec 22, 2022
Publication date	Jun 27, 2024
Grant date	—

Abstract

A solid oxide cell stack includes a first end plate having a flow path, a solid oxide cell disposed on the first end plate, and a second end plate including a lower region disposed on the solid oxide cell and having a first through-hole, and an upper region disposed on the lower region and having a second through-hole. In the second end plate, an inner sidewall of the upper region forming the second through-hole is inclined such that a width of the second through-hole increases in an upward direction.

First claim

What is claimed is:

1 . A solid oxide cell stack comprising:
a first end plate having a flow path; a solid oxide cell disposed on the first end plate; and a second end plate including a lower region disposed on the solid oxide cell and having a first through-hole, and an upper region disposed on the lower region and having a second through-hole, wherein in the second end plate, an inner sidewall of the upper region forming the second through-hole is inclined such that a width of the second through-hole increases in an upward direction.

2 . The solid oxide cell stack of claim 1 , wherein a width of the second through-hole is greater than a width of the first through-hole.

3 . The solid oxide cell stack of claim 2 , wherein when viewed from above, the first through-hole is disposed in plural in the second through-hole.

4 . The solid oxide cell stack of claim 2 , wherein the upper region includes the second through-hole in plural.

5 . The solid oxide cell stack of claim 4 , wherein when viewed from above, the first through-hole is disposed in plural in each of the plurality of second through-holes.

6 . The solid oxide cell stack of claim 1 , wherein the first through-hole has a uniform width.

7 . The solid oxide cell stack of claim 1 , wherein an inner sidewall of the lower region forming the first through-hole is disposed perpendicular to an upper surface of the solid oxide cell.

8 . The solid oxide cell stack of claim 1 , wherein a thickness of the upper region is greater than a thickness of the lower region.

9 . The solid oxide cell stack of claim 1 , wherein a thickness of the lower region is greater than or equal to a thickness of the upper region.

10 . The solid oxide cell stack of claim 1 , further comprising a fastening portion coupling the first and second end plates.

11 . The solid oxide cell stack of claim 10 , wherein the fastening portion has a coefficient of thermal expansion lower than a coefficient of thermal expansion of the first and second end plates.

12 . The solid oxide cell stack of claim 1 , wherein on a surface of at least one of the first and second end plates, facing the solid oxide cell, a current collecting layer is disposed.

13 . The solid oxide cell stack of claim 12 , further comprising a terminal portion connected to the current collecting layer.

14 . The solid oxide cell stack of claim 12 , wherein in at least one of the first and second end plates, a ceramic coating layer is disposed in at least a portion of an area other than an area in which the current collecting layer is disposed.

15 . The solid oxide cell stack of claim 1 , wherein the first end plate includes a groove provided around the flow path, and further includes a sealant disposed in the groove to cover a side surface of the solid oxide cell.

16 . The solid oxide cell stack of claim 1 , further comprising a gasket and a stopper disposed outside the flow path, between the first and second end plates.

17 . The solid oxide cell stack of claim 1 , wherein the solid oxide cell includes a fuel electrode, an air electrode, and an electrolyte disposed therebetween,
wherein the fuel electrode is disposed on a side of the first end plate, and the air electrode is disposed on a side of the second end plate.

18 . A solid oxide cell stack comprising:
a first end plate having a flow path; a solid oxide cell disposed on the first end plate; and a second end plate including a lower region disposed on the solid oxide cell and having a first through-hole, and an upper region disposed on the lower region and having a second through-hole, wherein when viewed from above, the first through-hole is disposed in plural in the second through-hole.

19 . The solid oxide cell stack of claim 18 , wherein a width of the second through-hole increases in an upward direction.

20 . The solid oxide cell stack of claim 18 , wherein a width of the first through-hole is constant in an upward direction.

Assignees

• Samsung Electro Mech

Inventors

• Kim Sung Han
• Chung jong ho
• Shim Jung Ho
• Jang Jae Hyuk
• Koo Bon Seok
• Lee Hong Ryul

Classifications

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title

• C25B1/042

  by electrolysis of steam · CPC title

• C25B9/77

  having diaphragms · CPC title

• H01M8/1213

  characterised by the electrode/electrolyte combination or the supporting material · CPC title

• H01M8/0271

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