Granted Patent B2

US 12,586,805 · App. 17/909,667 · Granted Mar 24, 2026

Inventors: Xinyu Li (Tokyo, JP); Chie Kawamura (Tokyo, JP)

Assignee: TAIYO YUDEN CO., LTD.

H01M8/1213H01M4/8621H01M4/925H01M8/0258H01M2008/1293

Abstract

Claims (16)

1 . A solid oxide fuel cell comprising:

a support of which a main component is a metal;

an anode layer that is supported by the support;

an electrolyte layer of solid oxide that is provided on the anode layer and has oxygen ion conductivity;

a cathode layer that is provided on the electrolyte layer; and

a porous layer of a metal that covers the cathode layer and a part of the electrolyte layer around the cathode,

wherein a thickness of the porous layer is 5 μm or more and 70 μm or less, and

wherein the support, the anode layer and the electrolyte layer are integral sintered bodies made by sintering powder materials.

2 . The solid oxide fuel cell as claimed in claim 1 , wherein, in a cross section of the porous layer, voids of the porous layer occupies 20% or more of a total area of the voids and the metal.

3 . The solid oxide fuel cell as claimed in claim 1 wherein the metal of the porous layer includes silver.

4 . The solid oxide fuel cell as claimed in claim 1 , wherein the metal of the porous layer includes at least one of gold, platinum, palladium, or silver-palladium alloy.

5 . The solid oxide fuel cell as claimed in claim 1 , wherein a reaction resistance of the cathode layer is 0.27 Ω·cm 2 or less.

6 . The solid oxide fuel cell as claimed in claim 1 , wherein an ohmic resistance of the cathode layer is 0.25 Ω·cm 2 or less.

7 . The solid oxide fuel cell as claimed in claim 1 ,

wherein a porosity of the porous layer is 20% or more and 40% or less, and

wherein the thickness of the porous layer is 5 μm or more and 20 μm or less.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (20)