Third electrode frame structure and method related thereto

• US 20070141432A1
• Filed: 12/21/2005
• Published: 06/21/2007
• Est. Priority Date: 12/21/2005
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Wei, Chang, Shapiro, Andrew, Cai, Jun, Yang, Hai, Wang, Shengxian, Huang, Qunjian
• Application Number:
  US11/314,758
• Publication Number:
  US 20070141432A1
• Time in Patent Office: Days
• US Class Current: 429/403
• CPC Class Codes: H01M 10/345 Gastight metal hydride accumulators
• CPC Class Codes: H01M 12/08 composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
• CPC Class Codes: H01M 2004/8689 Positive electrodes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A third electrode frame structure for use in a fuel cell or battery is provided. The third electrode frame structure may include a first electrode, a separator positioned on an outer perimeter of the first electrode, and a frame third electrode coupled to the separator. The separator may be positioned in a same plane between the first electrode and the third frame electrode.

Claims

1. An electrode assembly, comprising:

a first electrode having an outer perimeter;

a separator secured to the outer perimeter of the first electrode; and

a frame third electrode secured to an outer perimeter of the separator,

wherein the separator is coplanar with the first electrode and the third frame electrode.

2. The electrode assembly of claim 1, wherein the first electrode is a cathode.

3. The electrode assembly of claim 2, wherein the cathode comprises an air/oxygen electrode having a catalyst layer and gas diffusion layer.

4. The electrode assembly of claim 3, wherein the catalyst layer comprises a catalyst, a conductive material, and a binder.

5. The electrode assembly of claim 4, wherein the catalyst comprises a metal catalyst, a metal oxide catalyst, or a perovskite catalyst.

6. The electrode assembly of claim 3, wherein the gas diffusion layer comprises carbon black and a binder.

7. The electrode assembly of claim 6, wherein the binder comprises one or more of polytetrafluoroethylene, carboxymethylcellulose, polyvinylidene fluoride, fluorinated ethylene propylene, ethylene tetra-fluoro ethylene, ethylene chloro tri-fluoro ethylene, polychloro tri-fluoro ethylene, or a mixture of two or more thereof.

8. The electrode assembly of claim 1, wherein the separator is an electrical insulating material.

9. The electrode assembly of claim 8, wherein the separator comprises one or more of polytetrafluoroethylene, carboxymethylcellulose, polyvinylidene fluoride, fluorinated ethylene propylene, ethylene tetra-fluoro ethylene, ethylene chloro tri-fluoro ethylene, or polychloro tri-fluoro ethylene.

10. The electrode assembly of claim 1, wherein the frame third electrode comprises one or more ferro-based alloys.

11. The electrode assembly of claim 10, wherein the frame third electrode comprises stainless steel.

12. The electrode assembly of claim 1, wherein the frame third electrode comprises one or more of cadmium, cobalt, lead, gold, nickel, palladium, or platinum.

13. The electrode assembly of claim 12, wherein the frame third electrode comprises a nickel-based foam.

14. A metal/air battery comprising the electrode assembly of claim 1, wherein the galvanic cell is a metal/air battery.

15. A fuel cell comprising the electrode assembly of claim 1, wherein the galvanic cell is a fuel cell.

16. A galvanic cell, comprising:

a first electrode having an outer perimeter;

a first separator that is secured to the outer perimeter of the first electrode, and that is coplanar with the first electrode;

a frame third electrode that is coupled to the first separator, and that is coplanar with the first electrode;

a second separator that is oriented to be about perpendicular to the first separator, wherein the second separator is configured to spatially separate the first electrode and the third frame electrode from a second electrode;

a second electrode that is in communication with at least the first electrode and the third frame electrode, and that communicates through the second separator; and

a plurality of current collectors, and at least one of the plurality of current collectors contacting a respective one each of the first electrode, the second electrode, and the third electrode separately from each other.

17. The galvanic cell of claim 16, wherein the first electrode is a cathode and the second electrode is an anode.

18. The galvanic cell of claim 16, wherein a moldable housing encases at least the first electrode, the first separator, the frame third electrode, the second separator, and the second electrode.

19. A method, comprising:

contacting a first electrode with a first separator on an outer perimeter of the first electrode;

contacting the first separator with a third frame electrode, wherein the separator is in a same plane and disposed between the first electrode and the third frame electrode to provide a third electrode frame structure;

securing a second separator perpendicular to the first separator, so that the second separator is positioned between the third electrode frame assembly and a second electrode; and

the second electrode communicates through the second separator to both the first electrode and the third electrode, and thereby to make a third electrode frame structure for use in a galvanic cell.

20. The method of claim 19, wherein contacting comprises contacting by chemical means, mechanical means, or a combination thereof.

22. The method of claim 19, wherein the first electrode is a cathode and the second electrode is an anode.

23. An electrochemical cell system, comprising:

means for separating a first electrode from a third frame electrode on an outer perimeter of the first electrode, and which is in about the same plane as the first electrode and the third frame electrode; and

means for separating the first electrode from a second electrode, and which is about perpendicular to the means for separating a first electrode from a third frame electrode, and

the first electrode, the third frame electrode, or both the first electrode and the third frame electrode are capable of communicating with the second electrode through the means for separating the first electrode from a second electrode.

24. The system as defined in claim 23, further comprising means for housing at least the first electrode, the second electrode, the third frame electrode, and all of the separating means.

25. The system as defined in claim 24, wherein the housing means comprises a moldable plastic that is thermoformable material or a reactive injection moldable material.