Patent application number | Description | Published |
20100092815 | MEMBRANE ELECTRODE ASSEMBLY HAVING CATALYST DIFFUSION BARRIER LAYER - A membrane electrode assembly includes an anode; a cathode; a membrane between the anode and the cathode and having a thickness defined between the anode and the cathode; and a catalyst diffusion barrier layer in a location bounded on one side by an interface between the membrane and the cathode, and bounded on the other side by a plane approximately 50% of the thickness of the membrane from the cathode. A method of manufacture is also provided. | 04-15-2010 |
20110008706 | POLYMER COATING OF PEM FUEL CELL CATALYST LAYERS - A fuel cell ( | 01-13-2011 |
20110020727 | Protective and Precipitation Layers for PEM Fuel Cell - A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided. | 01-27-2011 |
20110039178 | Fuel cell having a hydrophilic substrate layer - A fuel cell power plant ( | 02-17-2011 |
20110052462 | FILTERS FOR REMOVAL OF VOLATILE SILOXANES AND LIFETIME EXTENSION OF PHOTOCATALYTIC DEVICES - A filter for use in an ultraviolet photocatalytic oxidation air purification system having a filter surface treatment that enhances removal of volatile silicon-containing compounds (VSCCs). The surface treatment may create an acidic site on the filter, increase the surface area of the filter, or facilitate preferential interaction between the surface and the VSCCs, thereby promoting the VSCCs to bond with the VSCC filter. Removal of the VSCCs prior to the VSCCs reaching the photocatalyst increases the useful life of the photocatalyst. | 03-03-2011 |
20110244340 | MEMBRANE ELECTRODE ASSEMBLIES WITH HYDROGEN PEROXIDE DECOMPOSITION CATALYST - A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system. The assembly components contain ionomer material which can be perfluorinated or non-perfluorinated, high temperature, hydrocarbon, and the like. | 10-06-2011 |
20120003382 | METHOD OF TREATING A MATERIAL TO ACHIEVE SUFFICIENT HYROPHILICITY FOR MAKING HYROPHILIC ARTICLES - An exemplary method of treating a material such as carbon or graphite to render at least some surfaces of the material hydrophilic includes coating at least a portion of the at least some surfaces with an oxygenated element and controlling a rate of a breakdown of the oxygenated element to leave a corresponding elemental oxide on the surfaces. In one example, the material is treated before being incorporated into an article comprising the material. Another example method includes treating an article comprising the material. Disclosed examples include precipitation or decomposition as the breakdown of the oxygenated element. | 01-05-2012 |
20120003560 | FUEL CELL FOR MOISTURE MANAGEMENT AT GAS INLETS - A fuel cell includes an electrode assembly having an electrolyte between a cathode catalyst and an anode catalyst, and a flow field plate having a channel for delivering a reactant gas to the electrode assembly. The flow field plate includes a channel having a channel inlet. A porous diffusion layer is located between the electrode assembly and the flow field plate. The porous diffusion layer includes a first region near the channel inlet and a second region downstream from the first region relative to the channel inlet. The first region includes a filler material that partially blocks pores of the first region such that the first region has a first porosity and the second region has a second porosity that is greater than the first porosity. | 01-05-2012 |
20120028160 | PREVENTING MIGRATION OF LIQUID ELECTROLYTE OUT OF A FUEL CELL | 02-02-2012 |
20120028172 | MANUFACTURE OF A FUEL CELL WITH LIQUID ELECTROLYTE MIGRATION PREVENTION | 02-02-2012 |