Patent application number | Description | Published |
20080199753 | Fluorine Treatment of Polyelectrolyte Membranes - A method for providing a polymer electrolyte membrane for a fuel cell that includes treating a hydrocarbon polymer membrane with fluorine to increase its acidity and acid content. Fluorine gas is mixed with an inert gas to dilute the fluorine so that it does not burn the hydrocarbon membrane. The mixed gas is introduced into a container in which the hydrocarbon membrane is mounted so that fluorine is deposited on the membrane. The gas is introduced into the container at a slow enough rate so that the fluorine does not burn the membrane. | 08-21-2008 |
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 |
20110229797 | Sulfonated-Perfluorocyclobutane Polyelectrolyte Membranes for Fuel Cells - A process for preparing a polymer comprising sulfonating a perfluorocyclobutane polymer with a sulfonating agent to form a sulfonated perfluorocyclobutane polymer, wherein the sulfonating agent comprises oleum, SO | 09-22-2011 |
20110256467 | Cobalt(II) Tetramethoxyphenylporphyrin (CoTMPP) Ionomer Stabilization to Prevent Electrode Degradation - A membrane/electrode assembly for fuel cell applications includes an ion conducting polymer and a porphyrin-containing compound at least partially dispersed within the ion conducting polymer, a first electrode and a second electrode. At least one of the first and second electrodes also includes the porphyrin-containing compound. The membrane/electrode assembly exhibits improved performance over membrane/electrode assembly not incorporating such porphyrin-containing compounds. | 10-20-2011 |
20120122011 | Nano-Fibers for Electrical Power Generation - A fibrous sheet for fuel cell or battery applications is formed by electrospinning a fluorinated ion-conducting polymer solution to form an agglomeration of fibers. | 05-17-2012 |
20120214882 | Poly(Perfluorocyclobutane) Ionomer with Phosphonic Acid Groups for High Temperature Fuel Cells - A polymer for ion conductor applications includes a polymer segment having a perfluorocyclobutyl moiety and a phosphonated aryl group and a polymer segment a perfluorocyclobutyl moiety without phosphonated aryl group. The polymer is formed into an ion conducting membrane for fuel cell applications. | 08-23-2012 |
20130022894 | ePTFE-Supported Polyelectrolyte Membranes Made with Ionomer-Kynar Blends - A composite membrane for fuel cells includes an expanded polytetrafluoroethylene substrate having a predefined void volume, a first polymer and a second polymer each of which fill at least a portion of the void volume. The first polymer includes the following chemical moiety: | 01-24-2013 |
20130084516 | Poly(Methyl Methacrylate) Additive to Polyelectrolyte Membrane - An ion-conducting membrane for fuel cells includes an ion-conducting polymer having protogenic groups and poly(methyl methacrylate). Characteristically, the ion-conducting layer is planar having a thickness from 1 microns to 200 microns. A membrane electrode assembly includes the ion-conducting membrane interposed between a cathode layer and an anode layer. | 04-04-2013 |
20130171528 | Organo-Copper Reagents for Attaching Perfluorosulfonic Acid Groups to Polyolefins - An ion conducting membrane for fuel cells involves coupling a compound having a sulfonic acid group with a polymeric backbone. Each of the compounds having a sulfonic acid group and the polymeric backbone are first functionalized with a halogen. | 07-04-2013 |
20130260279 | Rubber Crack Mitigants in Polyelectrolyte Membranes - A membrane electrode assembly for a fuel cell includes an anode catalyst layer, a cathode catalyst layer, and an ion conducting membrane. The ion conducting membrane is interposed between the anode catalyst layer and the cathode catalyst layer. The ion conducting membrane includes an ion conducting polymer having sulfonic acid groups and rubber particulates. Characteristically, the rubber particulates have an average spatial dimension less than about 600 nanometers. A fuel cell incorporating the membrane electrode assembly is also provided. | 10-03-2013 |
20130288158 | 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. | 10-31-2013 |
20140065514 | Polyolefin-PFCB Ionomer - A method of making an ion conducting membrane includes a step of reacting a compound having formula 1 with a polymer having polymer segment 2: | 03-06-2014 |
20140072900 | Metal Ionophores in PEM Membranes - A membrane electrode assembly for fuel cells includes a proton conducting membrane having a first side and a second side. The proton conducting membrane in turn includes a first polymer including cyclic polyether groups and a second polymer having sulfonic acid groups. The membrane electrode assembly further includes an anode disposed over the first side of the proton conducting layer and a cathode catalyst layer disposed over the second side of the proton conducting layer. | 03-13-2014 |
20140072901 | Crown Ether Containing PEM Electrode - A membrane electrode assembly for fuel cells includes a proton conducting membrane having a first side and a second side. The membrane electrode assembly further includes an anode disposed over the first side of the proton conducting layer and a cathode catalyst layer disposed over the second side of the proton conducting layer. One or both of the anode catalyst layer and the cathode catalyst layer includes a first polymer which has cyclic polyether groups. An ink composition for forming a fuel cell catalyst layer is also provided. | 03-13-2014 |
20140080031 | Dual Layered ePTFE Polyelectrolyte Membranes - A supported membrane for fuel cell applications includes a first expanded polytetrafluoroethylene support and a second expanded polytetrafluoroethylene support. Both the first and second expanded polytetrafluoroethylene supports independently have pores with a diameter from about 0.1 to about 1 microns and a thickness from about 4 to 12 microns. The supported membrane also includes an ion conducting polymer adhering to the first expanded polytetrafluoroethylene support and the second expanded polytetrafluoroethylene support such that the membrane has a thickness from about 10 to 25 microns. | 03-20-2014 |