| Patent Number |
Title Of Patent |
Date Issued |
| 7220693 |
Fuel cell catalyst electrodes |
May 22, 2007 |
| Acidic groups such as those in the sulfonic acid family have been successfully linked onto the surface of carbon used as catalyst support. Electrodes made using such sulfonated catalysts as used in electrochemical cells improve the performance of the cells, more so than cells fabrica |
| 7141322 |
Alcohol fueled direct oxidation fuel cells |
November 28, 2006 |
| A fuel cell using a neat alcohol such as neat 2-propanol, as its fuel is described. The fuel that is purposely not mixed with any amount of water is oxidized directly at the fuel cell anode. The fuel cell can support a higher current density than a fuel cell using 1 M 2-propanol aqueous |
| 7049014 |
Direct secondary alcohol fuel cells |
May 23, 2006 |
| A fuel cell using a secondary alcohol such as 2-propanol as fuel is disclosed. The fuel is oxidized directly at the anode without any reforming. Such a direct secondary alcohol fuel cell (D2AFC) possesses a much higher performance than a direct methanol fuel cell, especially at curre |
| 6869704 |
Enhancement of electrochemical cell performance |
March 22, 2005 |
| Electrodes for an electrochemical cell such as a proton exchange membrane (PEM) fuel cell are treated with steam or a hot solution before they are bonded to a membrane to form a membrane-electrode assembly. Such a treatment effectively increases the performance of the electrodes when |
| 6836123 |
Sensor for electro-active materials |
December 28, 2004 |
| A sensing device is featured that electrochemically measures methanol concentration. The sensing device has a flexible composite of layered materials wrapped about a flexible tube having aperture contact with a methanol flow stream. The layered materials sequentially wrapped on the t |
| 6805983 |
Activation of electrochemical cells with catalyst electrodes |
October 19, 2004 |
| A membrane-electrode assembly for electrochemical cells such as proton exchange membrane fuel cells and direct methanol fuel cells operating at ambient conditions are activated first by exposing them at a temperature higher than ambient temperature and with the gaseous reactants back |
| 6730424 |
Electrochemical method to improve the performance of H2/air PEM fuel cells and direct methanol f |
May 4, 2004 |
| A method is described for improving the performance of fuel cells such as H.sub.2 /air PEM fuel cells and direct methanol fuel cells. It has been discovered that H.sub.2 evolution can significantly improve the performance of air cathodes and direct methanol fuel cell anodes. The impr |
| 6727014 |
Fuel cell reactant and cooling flow fields integrated into a single separator plate |
April 27, 2004 |
| A fuel cell having a novel configuration including a segmented gas diffusion medium (GDM) or a non-segmented GDM and a separator plate, in which the reactant flow field and liquid coolant field are integrated into one side of a single plate element. The separator plate, in one embodi |
| 6093501 |
Fuel cell using an aqueous hydrogen-generating process |
July 25, 2000 |
| An improved fuel cell system that utilizes hydrogen and air. The hydrogen of the fuel cell is derived from a hydrogen-generating process wherein H.sub.2 O is passed over a bed of iron material. The hydrogen generating process uses a catalyst, or freshly-ground iron material, or both, and |
| 6051331 |
Fuel cell platelet separators having coordinate features |
April 18, 2000 |
| Fuel cell stacks comprising stacked separator/membrane electrode assembly fuel cells in which the separators comprise a series of thin sheet platelets, having individually configured serpentine micro-channel reactant gas humidification active areas and cooling fields therein. The ind |
| 6048634 |
Fuel cell using water-soluble fuel |
April 11, 2000 |
| A reactant flow system for a proton exchange membrane (PEM) fuel cell stack using a water-soluble fuel is described. The flow system includes the use of single-pass or multi-pass, flow channels. A flow channel section having at least one adjacent channel section whose reactant flows in a |
| 5925322 |
Fuel cell or a partial oxidation reactor or a heat engine and an oxygen-enriching device and met |
July 20, 1999 |
| The present invention relates to a combined cycle system of enhanced efficiency. The system comprises a top stage, such as a fuel cell, a partial oxidation reactor or a heat engine, and an oxygen-enriching device, such as a temperature swing adsorption device or a chemical reactor be |
| 5863671 |
Plastic platelet fuel cells employing integrated fluid management |
January 26, 1999 |
| Improved fuel cell stacks constructed from a plurality of cells, each comprising a series of interrelated mono and bipolar collector plates (BSPs), which in turn are built up by lamination of a core of related non-conductiveplastic orceramic platelets sandwiched between conductive mi |
| 5858567 |
Fuel cells employing integrated fluid management platelet technology |
January 12, 1999 |
| Fuel cell stacks comprising stacked separator/membrane electrode assembly cells in which the separators comprise a series of stacked thin sheet platelets having individually configured serpentine micro-channel reactant gas humidification, active area and cooling fields therein. The indiv |
| 5840270 |
Catalytic method of generating hydrogen |
November 24, 1998 |
| The catalyzed method of this invention features a method for operating an electrical automotive vehicle. The method of the invention utilizes a hydrogen-air fuel cell to power an electrical automotive vehicle having electrical drive motors. Hydrogen to fuel the fuel cell is supplied |
| 5830426 |
Aqueous hydrogen generation process |
November 3, 1998 |
| The new iron material and catalyst admixture of this invention features a method for operating an electrical automotive vehicle. The method of the invention utilizes a hydrogen-air fuel cell to power an electrical automotive vehicle having electrical drive motors. Hydrogen to fuel the |
| 5776625 |
Hydrogen-air fuel cell |
July 7, 1998 |
| A reactant flow system for a proton exchange membrane (PEM), hydrogen-air, fuel cell stack, is described. The flow system includes the use of single-pass or multi-pass, flow channels. A flow channel section having at least one adjacent channel section whose reactant flows in an opposite |
| 5690902 |
Hydrogen-powered automobile with in situ hydrogen generation |
November 25, 1997 |
| The new iron material and catalyst admixture of this invention feature a method for operating an automotive vehicle that is designed to internally combust hydrogen generated in situ aboard the vehicle. The method of the invention utilizes hydrogen from an onboard reactor to power an auto |
| 5643352 |
Reactive iron material for use in a hydrogen-generating process in an electrical vehicle |
July 1, 1997 |
| The present invention features a new iron material for use in situ with a hydrogen-air fuel cell, to generate the hydrogen to fuel the fuel cell. The iron material is made up of freshly-ground particles of iron, ranging in diameter size from approximately 25 to 1,200 .mu.m, with an a |
| 5629102 |
Electrical automobile having a fuel cell, and method of powering an electrical automobile with a |
May 13, 1997 |
| The present invention features a system and a method for operating an electrical automotive vehicle. The system has an electrically-powered automotive vehicle with electrical drive motors. The electricity to power the drive motors is supplied onboard by a hydrogen-air fuel cell which |
| 5510201 |
Method of operating a fuel cell wherein hydrogen is generated by providing iron in situ |
April 23, 1996 |
| An improved system for generating hydrogen fuel for use in an energy-producing device such as a fuel cell or heat engine is disclosed. The hydrogen is produced at a faster rate by reacting particles of an activated iron reactant with heated water in a fluidized bed-type reactor. The |
| 5445904 |
Methods of making oxygen distribution members for fuel cells |
August 29, 1995 |
| A water-pervious oxygen distribution member for a hydrogen fuel cell is made by a method comprising chemical surface treatment of a carbonaceous member to impart hydrophilicity while retaining mechanical strength and electrical properties. The oxygen-distribution member produced provides |
