Fuel cell coating

Patent metadata

Field	Value
Publication number	US-9843053-B2
Application number	US-201013820790-A
Country	US
Kind code	B2
Filing date	Sep 9, 2010
Priority date	Sep 9, 2010
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

An example fuel cell stack component includes a metallic layer applied to the component and an oxide layer applied to the metallic layer. The oxide layer includes a chemical component that is not in the metallic layer.

First claim

We claim:

1. A fuel cell stack component comprising:
an interconnect;
a metallic layer applied to a surface of the interconnect, the metallic layer including at least one first chemical element;
an oxide layer applied to the metallic layer, wherein the oxide layer includes a second chemical element, other than oxygen, that is distinct from the first chemical element; and
a bonding layer applied to the oxide layer and binding the oxide layer to an electrode layer, the bonding layer comprising spinel materials, a mixture of metal and metal oxides, or a mixture of metals.

2. The fuel cell stack component of claim 1 , wherein the interconnect is positioned on a cathode side of a solid oxide fuel cell.

3. The fuel cell stack component of claim 2 , wherein the fuel cell stack component further comprises a separator plate.

4. The fuel cell stack component of claim 1 , wherein the metallic layer comprises cobalt, copper, nickel, iron, titanium or a combination of these.

5. The fuel cell stack component of claim 1 , wherein the metallic layer comprises a binary or ternary alloy including cobalt, copper, nickel, iron, titanium or a combination of these.

6. The fuel cell stack component of claim 1 , wherein the metallic layer comprises a cobalt-iron alloy.

7. The fuel cell stack component of claim 1 , wherein the metallic layer is less than 10 microns thick.

8. The fuel cell stack component of claim 1 , wherein the metallic layer is applied to the fuel cell component using electroplating, electroless plating, vapor deposition, or sputtering or a combination of these.

9. The fuel cell stack component of claim 1 , wherein the oxide layer comprises spinel-based or perovskite-based materials.

10. The fuel cell stack component of claim 1 , wherein the oxide layer comprises a material selected from a group comprising (Mn, Co) 3 O 4 , (Mn, Co, Cr) 3 O 4 , (La, Sr)MnO 3 , (Mn, Co, Fe) 3 O 4 , and (La, Sr)(Co, Mn)O 3 .

11. The fuel cell stack component of claim 1 , wherein the oxide layer is applied to the metallic layer using a spray process, painting, a dip process, electrophoretic deposition, a screen printing process, or a combination of these.

12. The fuel cell stack component of claim 1 , wherein the oxide layer comprises metallic particles and an oxide matrix.

13. A fuel cell arrangement, comprising:
an anode;
a cathode;
a solid oxide electrolyte between the anode and the cathode;
an interconnect;
a metallic layer bonded to the interconnect, the metallic layer including at least one first chemical element;
an oxide layer bonded to the metallic layer, the oxide layer including a second chemical element, other than oxygen, that is distinct from the first chemical element; and
a bonding layer applied to the oxide layer and binding the oxide layer to an electrode layer, the bonding layer comprising spinel materials, a mixture of metal and metal oxides, or a mixture of metals.

14. The fuel cell arrangement of claim 13 , wherein the metallic layer comprises a cobalt-iron alloy, and the oxide layer comprises spinel-based or perovskite-based materials.

15. The fuel cell arrangement of claim 13 , including a separator plate, the metallic layer bonded to the separator plate and the oxide layer bonded to the metallic layer.

16. A method, comprising;
applying a metallic layer to an interconnect, the metallic layer including at least one first chemical element;
applying an oxide layer to the metallic layer, the oxide layer including a second chemical element, other than oxygen, that is distinct from the first chemical element; and
applying a bonding layer to the oxide layer and binding the oxide layer to an electrode layer, the bonding layer comprising spinel materials, a mixture of metal and metal oxides, or a mixture of metals.

17. The method of claim 16 , wherein applying the metallic layer comprises a process selected from a group including electroplating, electroless plating, vapor deposition, sputtering, or a combination of these.

18. The method of claim 16 , wherein applying the oxide layer comprises a process selected from a group including a wet spray process, painting, electrophoretic deposition, a dip process, a screen printing process, or a combination of these.

19. The fuel cell stack component of claim 1 , wherein the bonding layer comprises (Mn, Co) 3 O 4 , (Mn, Co, Fe) 3 O 4 , (Mn, Cu) 3 O 4 , a mixture of MnO and cobalt or a mixture of Mn and Co.

20. The method of claim 16 , further comprising:
assembling a fuel cell comprising:
an anode;
a cathode;
solid oxide electrolyte between the anode and the cathode;
an interconnect produced according to the method of claim 18 ;
a metallic layer bonded to the interconnect, the metallic layer including at least one first chemical element;
an oxide layer bonded to the metallic layer, the oxide layer including a second chemical element, other than oxygen, that is distinct from the first chemical element; and
a bonding layer applied to the oxide layer and binding the oxide layer to an electrode layer, the bonding layer comprising spinel materials, a mixture of metal and metal oxides, or a mixture of metals;

wherein the bonding layer comprises (Mn, Co) 3 O 4 , (Mn, Co, Fe) 3 O 4 , (Mn Cu) 3 O 4 , a mixture of MnO and cobalt or a mixture of Mn and Co.

Assignees

• Sun Ellen Y
• Chen Lei
• Yamanis Jean
• Magdefrau Neal
• Frame Dustin
• Audi Ag

Inventors

• Sun Ellen Y
• Chen Lei
• Yamanis Jean
• Magdefrau Neal
• Frame Dustin

Classifications

• H01M8/1231

  with both reactants being gaseous or vaporised · CPC title

• H01M8/0228 Primary

  in the form of layered or coated products · CPC title

• H01M8/0206 Primary

  Metals or alloys · CPC title

• Y02E60/50

  Fuel cells · CPC title