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| Number | Title | Issue Date |
| 7166382 | Method and apparatus for improved fluid flow within an electrochemical cell Treated porous flow field members are used to support membranes in electrochemical cells and to enhance fluid flow to and from the membrane. The treated porous includes a support material having at least a portion thereof treated with a quantity of hydrophobic polym... | 01/23/2007 |
| 7014947 | Integral membrane support and frame structure An electrochemical cell includes a first electrode, a second electrode, and a proton exchange membrane disposed between and in intimate contact with the electrodes. The proton exchange membrane is configured to be integral with a frame structure and includes a subst... | 03/21/2006 |
| 6926988 | Apparatus and method for maintaining compression of the active area in an electrochemical cell An electrochemical cell includes a first electrode, a second electrode, a proton exchange membrane disposed between and in intimate contact with the electrodes, and a pressure pad disposed in electrical communication with the first electrode. The pressure pad is com... | 08/09/2005 |
| 6887601 | Regenerative electrochemical cell system and method for use thereof An exemplary embodiment of the regenerative electrochemical cell system comprises: a fuel cell module comprising a fuel cell oxygen inlet in fluid communication a water storage device, and a fuel cell hydrogen inlet in fluid communication with both an oxygen source ... | 05/03/2005 |
| 6855450 | Proton exchange membrane electrochemical cell system A compression member for an electrochemical cell stack is provided. The compression member includes a first surface including a plurality of raised portions, a second surface including a substantially flat surface, and an edge defined by the first surface and the se... | 02/15/2005 |
| 6833205 | Electrochemical cell system output control method and apparatus A method and apparatus is provided for an electrochemical cell system. The electrochemical cell system includes: an electrochemical cell; an energy source configured for providing a quantity of energy to the electrochemical cell; a sensing apparatus in operable comm... | 12/21/2004 |
| 6828056 | Electrode catalyst composition, electrode, and membrane electrode assembly for electrochemical cells An electrode composition comprises a support material that is non-oxidizable at anodic potentials less than about 4 volts, and a catalyst material comprising active electrocatalytic sites. In another embodiment, the electrode can further comprise a proton conductive... | 12/07/2004 |
| 6814841 | Gas liquid phase separator with improved pressure control A gas/liquid phase separator includes a fluid inlet, a vapor outlet, a liquid outlet, and first and second valves disposed in fluid communication with the liquid outlet. Both valves are controllable in response to a system pressure and a fluid level in the gas/liqui... | 11/09/2004 |
| 6811915 | Cell frame/flow field integration method and apparatus An electrochemical cell in which the cell frame is integrated with the flow field support member defining a contiguous surface includes an electrode, a proton exchange membrane and a flow field support member disposed at the electrode, a cell frame disposed at the f... | 11/02/2004 |
| 6783885 | Low gravity electrochemical cell An electrochemical cell system includes a hydrogen electrode; an oxygen electrode; a membrane disposed between the hydrogen electrode and the oxygen electrode; and a compartmentalized storage tank. The compartmentalized storage tank has a first fluid storage section... | 08/31/2004 |
| 6759161 | Integral membrane support and frame structure An electrochemical cell includes a first electrode, a second electrode, and a proton exchange membrane disposed between and in intimate contact with the electrodes. The proton exchange membrane is configured to be integral with a frame structure and includes a subst... | 07/06/2004 |
| 6723220 | Protonic rate level sensing device for an electrolysis cell A level sensing system includes a flow control device disposed in fluid communication with a liquid outlet stream of a hydrogen/water phase separation apparatus and a controller disposed in operable communication with the flow control device. The controller is confi... | 04/20/2004 |
| 6712944 | Gas/liquid phase separator for electrolysis cell A gas/liquid phase separator for an electrolysis cell includes a vessel and a float in operable communication with each other. The vessel includes a fluid inlet and first and second fluid outlets. A fluid stream comprising gas and liquid is received in the vessel th... | 03/30/2004 |
| 6706436 | Electrochemical cell design using a bipolar plate An electrochemical cell arrangement using a bipolar plate is disclosed, wherein the bipolar plates are formed from single or multiple sheets of metal foil, preferably titanium, embossed with the fluid fields. The bipolar plate, which forms the oxygen, hydrogen, and ... | 03/16/2004 |
