A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes framed electrodes to maintain a high air flow rate and low pressure throughout the
A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes framed electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and frames to supply the electrodes with high concentrations of oxygen from air.
대표청구항▼
1. A fuel cell comprising:at least one hydrogen electrode frame having an inner side and an outer side, wherein a hydrogen electrode is disposed within said inner side of said hydrogen electrode frame and a compression plate is disposed within said outer side of said hydrogen electrode frame;at leas
1. A fuel cell comprising:at least one hydrogen electrode frame having an inner side and an outer side, wherein a hydrogen electrode is disposed within said inner side of said hydrogen electrode frame and a compression plate is disposed within said outer side of said hydrogen electrode frame;at least one oxygen electrode frame having an inner side and an outer side, wherein an oxygen electrode is disposed within said inner side of said oxygen electrode frame and a compression plate is disposed within said outer side of said oxygen electrode frame;at least one electrolyte chamber disposed between said hydrogen electrode and said oxygen electrode;said compression plate disposed within said hydrogen electrode frame being configured to distribute a hydrogen stream across said hydrogen electrode;said compression plate disposed within said oxygen electrode frame being configured to distribute an oxygen containing stream across said oxygen electrode;said inner sides of said hydrogen electrode frame and said oxygen electrode frame being adhered together forming a series of electrolyte flow channels disposed between said hydrogen electrode frame and said oxygen electrode frame, and a plurality of electrolyte flow distributing structures disposed within said electrolyte flow channels, said series of electrolyte flow channels and said electrolyte flow distributing structures being configured to uniformly distribute an electrolyte solution laterally through said electrolyte chamber. 2. The fuel cell according to claim 1, wherein said hydrogen electrode frame and said oxygen electrode frame have a tongue and groove configuration. 3. The fuel cell according to claim 1, wherein said flow distributing structures extend from said hydrogen electrode frame to said oxygen electrode frame. 4. The fuel cell according to claim 1, wherein said flow distributing structures provide support to said fuel cell. 5. The fuel cell according to claim 1, wherein said flow distributing structures have a polygonal cross section. 6. The fuel cell according to claim 1, wherein said flow distributing structures have a circular cross section. 7. The fuel cell according to claim 1, wherein said electrolyte chamber provides mechanical support within said fuel cell and provides a pathway for said electrolyte solution to contact said hydrogen electrode and said oxygen electrode. 8. The fuel cell according to claim 1, wherein said electrolyte chamber contacts an electrolyte contacting surface of said hydrogen electrode and said oxygen electrode. 9. The fuel cell according to claim 1, wherein said electrolyte chamber further comprises a porous support structure disposed between a pair of membranes. 10. The fuel cell according to claim 9, wherein said pair of membranes prevent excess electrolyte solution from contacting said hydrogen electrode and said oxygen electrode. 11. The fuel cell according to claim 9, wherein said pair of membranes prevent said oxygen containing stream and said hydrogen stream from penetrating into said electrolyte. 12. The fuel cell according to claim 9, wherein said porous support structure is comprised of an expanded polymer sheet. 13. The fuel cell according to claim 12, wherein said expanded polymer sheet is comprised of a polyolefin. 14. The fuel cell according to claim 1, wherein said compression plate further comprises a series of flow channels configured to uniformly distribute said hydrogen stream to said hydrogen electrode. 15. The fuel cell according to claim 1, wherein said compression plate disposed within said hydrogen electrode frame has flow channels configured to uniformly distribute said hydrogen stream across said hydrogen electrode. 16. The fuel cell according to claim 1, wherein said compression plate disposed within said oxygen electrode frame has flow channels configured to uniformly distribute said oxygen containing stream across said oxygen electrode. 17. The fuel cell according to claim 1, wherein said compression plates are adapted to absorb expansion of said hydrogen electrode. 18. The fuel cell according to claim 1, wherein said compression plates provide mechanical support within said fuel cell. 19. The fuel cell according to claim 1, wherein said compression plates are comprised of rubber. 20. The fuel cell according to claim 1, wherein said hydrogen electrode comprises an anode active material having hydrogen storage capacity. 21. The fuel cell according to claim 20, wherein said hydrogen electrode has a hydrogen contacting surface, an electrolyte solution contacting surface, and a bulk of said active anode material. 22. The fuel cell according to claim 21, wherein said bulk of said anode active material is disposed between said hydrogen contacting surface and said electrolyte contacting surface. 23. The fuel cell according to claim 21, wherein said hydrogen contacting surface is adapted to dissociate and absorb gaseous hydrogen. 24. The fuel cell according to claim 23, wherein said bulk of said anode active material is adapted to store said absorbed hydrogen. 25. The fuel cell according to claim 24, wherein said electrolyte contacting surface is adapted to react said stored hydrogen with an electrolyte solution. 26. The fuel cell according to claim 1, wherein said hydrogen electrode comprises an anode active material layer, a porous polytetrafluoroethylene layer, and a current collector grid. 27. The fuel cell according to claim 26, wherein said anode active material layer is disposed between said current collector grid and said polytetrafluoroethylene layer. 28. The fuel cell according to claim 26, wherein said anode active material layer is dispersed throughout said current collector grid. 29. The fuel cell according to claim 26, wherein said anode active material layer comprises a mixture of mischmetal nickel alloy, raney nickel, graphite, and polytetrafluoroethylene powder. 30. The fuel cell according to claim 29, wherein said anode active material layer has the following composition:35 weight percent mischmetal nickel alloy,46 weight percent raney nickel,4 weight percent graphite, and15 weight percent polytetrafluoroethylene powder. 31. The fuel cell according to claim 26, wherein said current collector grid comprises at least one selected from the group consisting of mesh, grid, matte, expanded metal, foil, foam and plate. 32. The fuel cell according to claim 26, wherein said current collector grid comprises 40 wires per inch running horizontally and 20 wires per inch running vertically. 33. The fuel cell according to claim 26, wherein said current collector grid is comprised of a conductive metal. 34. The fuel cell according to claim 33, wherein said conductive metal is nickel. 35. The fuel cell according to claim 1, wherein said oxygen electrode comprises a cathode active material. 36. The fuel cell according to claim 35, wherein oxygen electrode has an oxygen contacting surface, an electrolyte solution contacting surface, and a bulk of said cathode active material. 37. The fuel cell according to claim 36, wherein said bulk of said cathode active material is disposed between said oxygen contacting surface and said electrolyte contacting surface. 38. The fuel cell according to claim 36, wherein said oxygen contacting surface is adapted to dissociate and absorb gaseous oxygen. 39. The fuel cell according to claim 38, wherein said bulk of said cathode active material is adapted to store said absorbed oxygen. 40. The fuel cell according to claim 39, wherein said electrolyte contacting surface is adapted to react said stored oxygen with an electrolyte solution. 41. The fuel cell according to claim 1, wherein said oxygen electrode comprises a gas diffusion layer, a catalyst layer, a polytetrafluoroethylene layer, and a current collector grid. 42. The fuel cell according to claim 41, wherein said catalyst layer is disposed between said gas diffusion layer and said current collector grid. 43. The fuel cell according to claim 41, wherei n said gas diffusion layer is disposed between said catalyst layer and said polytetrafluoroethylene layer. 44. The fuel cell according to claim 41, wherein said catalyst layer is dispersed throughout said current collector grid. 45. The fuel cell according to claim 41, wherein said current collector grid is in intimate contact with said electrolyte stream. 46. The fuel cell according to claim 41, wherein said current collector comprises at least one selected from the group consisting of mesh, grid, matte, expanded metal, foil, foam and plate. 47. The fuel cell according to claim 41, wherein said current collector grid comprises 40 wires per inch running horizontally and 20 wires per inch running vertically. 48. The fuel cell according to claim 41, wherein said current collector grid is comprised of a conductive metal. 49. The fuel cell according to claim 48, wherein said current collector grid is comprised of nickel. 50. The fuel cell according to claim 41, wherein said gas diffusion layer has the following composition:40 weight percent polytetrafluoroethylene;60 weight percent carbon black. 51. The fuel cell according to claim 41, wherein said catalyst layer has the following composition:50 weight percent of a mixture by weight of 40 percent polytetrafluoroethylene and 60 percent carbon black,15 weight percent carbon black;15 weight percent graphite;20 weight percent silver oxide. 52. The fuel cell according to claim 51, wherein said silver oxide includes a lithium aluminum alloy. 53. The fuel cell according to claim 51, wherein said silver oxide includes gallium. 54. The fuel cell according to claim 1, wherein said electrolyte solution is comprised of a potassium hydroxide solution. 55. The fuel cell according to claim 1, wherein said oxygen containing stream comprises air. 56. The fuel cell according to claim 1, wherein said hydrogen stream comprises gaseous hydrogen.
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