Claims
- 1. An electrochemical cell, comprising:an electrode; a proton exchange membrane disposed at the electrode; a flow field support member disposed at the electrode; a cell frame disposed at the flow field support member, and a membrane support element disposed intermediate the flow field support member and the cell frame, the membrane support element being integral with the flow field support member and the cell frame to define a contiguous surface extending from the flow field support member and the cell frame.
- 2. The electrochemical cell of claim 1, wherein a defining surface of the membrane support element is fused with defining surfaces of the flow field support member and the cell frame.
- 3. The electrochemical cell of claim 2, wherein the fusing of the membrane support element with defining surfaces of the flow field support member and the cell frame is effected with heat.
- 4. The electrochemical cell of claim 2, wherein the fusing of the membrane support element with defining surfaces of the flow field support member and the cell frame is effected with pressure.
- 5. The electrochemical cell of claim 1, wherein the membrane support element is a continuous element.
- 6. The electrochemical cell of claim 1, wherein the membrane support element is fabricated from a thermoset material, a thermoplastic material, or a combination of the foregoing materials.
- 7. The electrochemical cell of claim 1, further comprising a resilient seal disposed at the cell frame, the resilient seal being configured to engage the cell frame and to be engaged by surface.
- 8. The electrochemical cell of claim 7 wherein the resilient seal is disposed in a groove disposed at the cell frame.
- 9. An electrochemical cell, comprising:an electrode; a proton exchange membrane disposed at the electrode; a flow field support member disposed at the electrode; a cell frame disposed at the flow field support member; and a resilient seal disposed at the cell frame, the resilient seal being engageable by a surface to prevent fluid communication across the resilient seal.
- 10. The electrochemical cell of claim 9, wherein the resilient seal is disposed in a groove disposed at the cell frame.
- 11. The electrochemical cell of claim 9, wherein the resilient seal is fabricated from an elastomer.
- 12. The electrochemical cell of claim 11, wherein the elastomer is ethylenepropylenediene monomer, a polyetherimide, polysulfone, or a combination of the foregoing materials.
- 13. A method of integrating a frame with a flow field support member in an electrochemical cell, the method comprising:disposing a support member in a gap between the frame and the flow field support member; and melting the support member into the frame and the flow field support member to form a contiguous surface.
- 14. The method of claim 13, wherein the melting of the support member comprises heating an exposed surface of the support member.
- 15. The method of claim 13, wherein the melting of the support member comprises pressing an exposed surface of the support member.
- 16. A method of sealing a flow field of an electrochemical cell, the method comprising:disposing a resilient seal at a frame of the electrochemical cell; and disposing the resilient seal into a groove in the frame.
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefits of U.S. Provisional Patent Application Ser. No. 60/236,279, filed Sep. 28, 2000, and U.S. Provisional Patent Application Ser. No. 60/307,036 filed Jul. 20, 2001, the entire contents of both applications being incorporated herein by reference.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
Country |
19821767 |
Nov 1999 |
DE |
Non-Patent Literature Citations (1)
Entry |
International Search Report; International Publication No. WO 02/027847 A3; International Publication Date Apr. 4, 2002; 5 pages. |
Provisional Applications (2)
|
Number |
Date |
Country |
|
60/307036 |
Jul 2001 |
US |
|
60/236279 |
Sep 2000 |
US |