Patent application number | Description | Published |
20090278083 | POLYELECTROLYTE MEMBRANES COMPRISED OF BLENDS OF PFSA AND SULFONATED PFCB POLYMERS - A polymer blend useful as an ion conductor in fuel cells includes a first polymer having a cyclobutyl moiety and a second polymer include a sulfonic acid group. | 11-12-2009 |
20090280382 | COMPOSITE MEMBRANE - A composite membrane for fuel cell applications includes a support substrate with a predefined void volume. The void volume is at least partially filled with an ion conducting polymer composition. Characteristically, the ion conducting polymer composition includes a first polymer with a cyclobutyl moiety and a second polymer that is different than the first polymer. | 11-12-2009 |
20090280383 | BLENDED PEM'S WITH ELASTOMERS FOR IMPROVED MECHANICAL DURABILITY - A blend composition comprises a fluorine-containing polymer electrolyte and a fluoro-rubber. An electrolyte membrane may be prepared from the blend composition. The electrolyte membrane may be used in electrochemical cells such as electrolyzers, batteries and fuel cells. | 11-12-2009 |
20100044616 | BLENDS OF LOW EQUIVALENT MOLECULAR WEIGHT PFSA IONOMERS WITH KYNAR 2751 - A polymer blend useful as an ion conductor in fuel cells includes a first polymer that includes a non-ionic segment and a second polymer that includes a sulfonic acid group. | 02-25-2010 |
20100047657 | GRADIENT REINFORCED PROTON EXCHANGE MEMBRANE - An ion conducting polymeric structure suitable for fuel cell applications is provided. The polymeric structure comprises a non-homogenous polymeric layer. The non-homogeneous layer is a blend of a first polymer comprising cyclobutyl moiety; and a second polymer having a non-ionic polymer segment. The weight ratio of the first polymer to the second polymer varies as a function of position within the non-homogenous layer. The blend composition may be cast into an electrolyte membrane that can be used to prepare electrochemical cells such as batteries and fuel cells. | 02-25-2010 |
20110045381 | Hydrocarbon PEM Membranes with Perfluorosulfonic Acid Groups for Automotive Fuel Cells - A solid electrochemical cell membrane composition comprises a hydrocarbon polymeric main chain and a perfluorinated superacid side group. A method of producing the membrane composition is also disclosed. | 02-24-2011 |
20110053007 | PERFLUOROCYCLOBUTANE BASED WATER VAPOR TRANSFER MEMBRANES - A membrane humidifier assembly includes a first flow field plate adapted to facilitate flow of a first gas thereto and a second flow field plate adapted to facilitate flow of a second gas thereto. A polymeric membrane is disposed between the first and second flow fields and adapted to permit transfer of water from the first flow field plate to the second flow field plate. The polymeric membrane includes a polymer having perfluorocyclobutyl groups. | 03-03-2011 |
20110053008 | WATER VAPOR TRANSFER MEMBRANE AND PAPER INTEGRATED ASSEMBLY - A membrane humidifier assembly includes a first flow field plate adapted to facilitate flow of a first gas thereto and a second flow field plate adapted to facilitate flow of a second gas thereto. A polymeric membrane is disposed between the first and second flow fields. The polymeric membrane is adapted to permit transfer of water between the first flow field plate and the second flow field plate. The polymeric membrane includes a polymeric substrate and a polymer layer disposed on the polymeric substrate. The polymer layer characteristically includes a first polymer having fluorinated cyclobutyl groups disposed on the polymeric substrate. | 03-03-2011 |
20110053009 | CUSTOMIZED WATER VAPOR TRANSFER MEMBRANE LAYERED STRUCTURE - A membrane humidifier assembly includes a first flow field plate adapted to facilitate flow of a first gas thereto and a second flow field plate adapted to facilitate flow of a second gas thereto. A polymeric membrane is disposed between the first and second flow fields. The polymeric membrane is adapted to permit transfer of water between the first flow field plate and the second flow field plate. The polymeric membrane includes a polymeric substrate and a polymer layer disposed on the polymeric substrate. The polymer layer characteristically includes a first polymer having fluorinated cyclobutyl groups disposed on the polymeric substrate. | 03-03-2011 |
20110053010 | PERFLUOROCYCLOBUTANE BASED WATER VAPOR TRANSFER MEMBRANES WITH SIDE CHAIN PERFLUOROSULFONIC ACID MOIETIES - A membrane humidifier assembly includes a first flow field plate adapted to facilitate flow of a first gas thereto and a second flow field plate adapted to facilitate flow of a second gas thereto. A polymeric membrane is disposed between the first and second flow fields and adapted to permit transfer of water from the first flow field plate to the second flow field plate. The polymeric membrane includes a polymer having perfluorocyclobutyl groups and a pendant side chain having a protogenic group. | 03-03-2011 |
20110053035 | Sodium Stannate Additive to Improve the Durability of PEMS for H2/Air Fuel Cells - An ion conducting membrane for fuel cell applications includes an ion conducting polymer and a tin-containing compound at least partially dispersed within the ion conducting polymer. The ion conducting membranes exhibit improved performance over membranes not incorporating such tin-containing compounds. | 03-03-2011 |
20110053036 | Polyelectrolyte Membranes Made Of Poly(Perfluorocyclobutanes) With Pendant Perfluorosulfonic Acid Groups and Blends With Poly(Vinylidene Fluoride) - A polymer useful as an ion conductor in fuel cells includes a perfluorocyclobutyl moiety and pendant PFSA side groups. The polymer is made by a variation of the Ullmann reaction. Ion conducting membranes incorporating the polymer are provided. | 03-03-2011 |
20110053037 | BIFUNCTIONAL MEMBRANE FOR USE IN MEMBRANE ELECTRODE ASSEMBLIES WITH INTEGRATED WATER VAPOR TRANSFER ZONES - A fuel cell includes a first flow field plate defining at least one flow field channel. A cathode catalyst layer is disposed over at least a portion of the first flow field plate. A polymeric ion conducting membrane is disposed over cathode catalyst layer. An anode catalyst layer is disposed over the polymeric ion conducting membrane. Finally, a second flow field plate defining at least one flow field channel is disposed over the anode catalyst layer. The polymeric ion conducting membrane extends beyond the cathode catalyst layer and the anode catalyst layer such that the fuel cell has at least one peripheral region with the polymeric catalyst layer interposed between first flow field plate and the second flow field plate without the cathode catalyst layer and the anode catalyst layer. | 03-03-2011 |
20110053038 | CO(II)TETRAMETHOXYPHENYLPORPHYRIN ADDITIVE TO PFSA PEMS FOR IMPROVED FUEL CELL DURABILITY - An ion conducting membrane for fuel cell applications includes an ion conducting polymer and a porphyrin-containing compound at least partially dispersed within the ion conducting polymer. The ion conducting membranes exhibit improved performance over membranes not incorporating such porphyrin-containing compounds. | 03-03-2011 |
20110054050 | ION EXCHANGE MEMBRANE HAVING LAMELLAR MORPHOLOGY AND PROCESS OF MAKING THE SAME - An ion exchange membrane is prepared from a block copolymer comprising a hydrophobic polymer segment and a polar polymer segment. The ion exchange membrane is formed by placing a film layer in steam, water or an electric field at a temperature greater than about 40° C. for sufficient amount of time to develop a bicontinuous morphology. The ion exchange membrane is also formed from a film layer comprising a block copolymer and a solvent. The film layer is placed in an electric field at an elevated temperature and dried therein. The film layer is thereby converted into an ion exchange membrane with bicontinuous morphology. The ion exchange membrane prepared according to these processes exhibits improved mechanical and electrochemical properties. | 03-03-2011 |
20110117472 | POLYMER DISPERSANT ADDITION TO FUEL CELL ELECTRODE INKS FOR IMPROVED MANUFACTURABILITY - An ink composition for forming a fuel cell electrode includes a catalyst composition, a polymeric binder, a polymeric dispersant, and a solvent. The polymeric dispersant includes a perfluorocyclobutyl-containing polymer. | 05-19-2011 |
20110159404 | Polyolefin Support to Prevent Dielectric Breakdown in PEMS - A fuel cell includes a first catalyst layer and a second catalyst layer. An ion conducting membrane is interposed between the first and second catalyst layers. The ion conducting layer includes a polyolefin support structure and an ion conducting polymer at least partially penetrating the polyolefin support structure. A set of electrically conducting flow field plates are in communication with the first and second catalyst layers. | 06-30-2011 |
20110159405 | Hydrophilic Polyelectrolyte Membranes Containing Poly(Vinyl Acetate) and Poly(Vinyl Alcohol) - An ion conducting membrane for fuel cell applications includes a combination of a polyvinyl polymer and an ion conducting polymer that is different than the polyvinyl polymer. The ion conducting membrane of this embodiment is able to operate in fuel cells at elevated temperatures with minimal external humidification. A fuel cell incorporating the ion conducting membrane between a first and second catalyst layer is also provided. | 06-30-2011 |
20110165497 | Method for Mitigating Fuel Cell Chemical Degradation - A composite membrane for fuel cell applications includes a support substrate with a predefined void volume. The void volume is at least partially filled with an ion conducting polymer composition that includes an additive that inhibits polymer degradation. Characteristically, the ion conducting polymer composition includes a first polymer with a cyclobutyl moiety and a second polymer that is different than the first polymer. | 07-07-2011 |
20110257278 | COMBINATION OF MAIN-CHAIN AND SIDE-CHAIN SULFONATION OF PFCB-6F HIGH-TEMPERATURE FUEL CELL MEMBRANES - A polymer useful as an ion conducting membrane for fuel cell applications includes both main chain and side chain protogenic groups. Methods for preparing the polymer include addition of the side chains both before and after addition of the protogenic groups. | 10-20-2011 |
20120135332 | FUEL CELLS HAVING IMPROVED DURABILITY - A fuel cell or a fuel cell stack component comprises an active area and a non-active area. A peroxide decomposing metal compound or metal alloy is disposed in or on the non-active area of a fuel cell or a fuel cell component. The metal compound or alloy is capable of providing a peroxide decomposing metal species that can migrate from the non-active area to an active area of a fuel cell. A fuel cell or membrane electrode assembly having a peroxide decomposing metal compound or alloy disposed in its non-active area exhibits improved durability. | 05-31-2012 |