摘要:
A redox fuel cell comprising a catholyte solution comprising at least one non-volatile catholyte component, the catholyte solution comprising a redox mediator couple; and a regeneration zone separate from the membrane electrode assemblies of the fuel cell, the means for supplying an oxidant to the fuel cell being adapted to supply the oxidant to the regeneration zone, the volume of catholyte solution in the regeneration zone being from about 25% to about 90% of the total combined volume of catholyte solution in the regeneration zone and the cathode chambers of the fuel cell.
摘要:
The apparatus contains a means to create superheated steam at a temperature of preferably 800° C. The superheated steam is delivered to a catalytic decomposition converter that contains ceramic membranes that function to decompose water H2O into its constituent elements of diatomic hydrogen and oxygen. In one embodiment, a cascade of catalytic cells, one set for hydrogen and one set for oxygen are arranged in a unique “Cascade and Recirculate” configuration that greatly improves the throughput of the catalytic process. Only enough hydrogen is produced and delivered to the fuel cell according to the real time demand. There is no hydrogen storage on board. An electrically heated boiler initializes the process, and thereafter the heat from the exothermic reaction of a high-temperature fuel cell, and a small hydrocarbon burner sustains the operational superheated steam temperature. By using the by-product heat of a high temperature fuel cell in conjunction with the efficient combustion of a small amount of conventional hydrocarbon fuel, a unique thermodynamic hybrid system is created. The electrical energy generated by the fuel cell is used to maintain the charged state of a traction battery. A plurality of pumps, valves, regulators and sensors under microprocessor control manage the processes.
摘要:
An electrochemical conversion system (110) is disclosed having a housing (111) defining an opening (112) and an internal chamber (113). An electrochemical cell (116) is mounted within the opening (112) which is electrically coupled to a circuit (117). A mass of metal hydride material (118) is positioned within the chamber (113). The circuit (117) includes a load (127) and a battery (128) electrically coupled in series. The system may also be adapted to generate DC power with the addition of a rectifier (131).
摘要:
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 and with a gaseous portion of an water phase separation device; an electrolysis module comprising an electrolysis water inlet in fluid communication with the water storage device via a fuel cell oxygen outlet, and an electrolysis water outlet in fluid communication with the fuel cell hydrogen.One of the embodiments for operating a regenerative electrochemical cell system disclosed herein, comprises: introducing feed hydrogen from a hydrogen storage system to a fuel cell hydrogen electrode and introducing feed oxygen from an oxygen/water phase separation device to a fuel cell oxygen electrode; reacting hydrogen ions with the oxygen to generate electricity and water; once the fuel cell has attained operating conditions, ceasing the feed oxygen from the oxygen/water phase separation device, and introducing second oxygen from a surrounding atmosphere module to the fuel cell oxygen electrode; directing the water to a water storage device; introducing water to an electrolysis water electrode and power to an electrolysis module, to produce refuel hydrogen and oxygen; and directing the refuel hydrogen to the hydrogen storage device.
摘要:
A device for converting heat and/or radiation energy into electric energy. The device is comprised of a gastight chamber and at least one electrochemical cell arranged in said gastight chamber, which consists of an anode and a cathode, an electrolyte being placed between the former and the latter and the terminal leads being guided outward. The gastight chamber and the elctrochemical cell contain a gas or gas mixture, to which energy in the form of heat (null) and/or radiation (hnull) can be fed, wherein the gas or gas mixture comprises a molecular and a dissociated fraction, the proportion of which depends on the temperature and produces a difference in potential between the anode and the cathode.
摘要:
Thermal decomposition of a reactant, XY, proceeds on a negative catalytic electrode to form products, X and Y. The product Y is a cellular reaction material, which separates into ions, Y.sup.+, and electrons, e.sup.-, on the negative catalytic electrode. The ions Y.sup.+ move through a solid electrolyte, the electrons e.sup.- pass through an external resistor, and the product X formed on the negative catalytic electrode is circulated to the positive catalytic electrode, therefore reproducing the reactant XY. Since the cellular reaction material Y need not be released from the top of the catalytic electrode, the invention is adapted to convert heat energy into electric energy efficiently as compared with conventional methods. In one embodiment, reactant XY is 2-propanol, and products X and Y are acetone and hydrogen, respectively.
摘要:
A membrane-electrode assembly for use in thermoelectrochemical systems. The electrode assembly includes a radiation grafted cation exchange membrane which is plasma etched to provide an etched anode surface and etched cathode surface. A catalytic cathode layer is thermally bonded to the etched cathode surface and a catalytic anode layer is thermally bonded to the etched anode membrane surface. The resulting membrane-electrode assembly is resistant to delamination and provides electrochemical performance which is equal to or better than that obtained with more expensive conventional electrodialysis membranes.
摘要:
A method for forming a gas-permeable and ion-permeable membrane comprising fully impregnating a porous ion-impermeable or non-conductive polymer substrate with an ion-conducting polymer material to form a composite and subsequently stretching the composite to re-form pores in the substrate. The resulting membrane comprises regions of the ion-conducting material juxtaposed to the gas-permeable pores formed in the substrate by the stretching process.