Patent application number | Description | Published |
20080226960 | Separation Membrane for Fuel Battery and Process for Producing the Same - There are disclosed a membrane for a fuel cell in which voids in a porous membrane are filled with a crosslinking type ion exchange resin having both cation-exchange group and anion-exchange group via a covalent bond, wherein the ion exchange resin has ion-exchange groups with either polarity more than ion-exchange groups with the opposite polarity and at least 40% of the ion-exchange groups of the opposite polarity form ion complexes with the ion-exchange groups of the major polarity, as well as a producing process therefor. | 09-18-2008 |
20090053578 | Separation Membrane for Direct Liquid Fuel Cell - The present invention provides a membrane for direct liquid fuel cell, composed of a cation exchange membrane having a water content of 1 to 5% at a relative humidity of 20% RH (25° C.), a water content of 5 to 15% at a relative humidity of 80% RH (25° C.) and a water content of 20 to 40% at a relative humidity of 100% RH (25° C.). The membrane is suitable as a membrane for fuel cell in which the air is taken in and is supplied into an oxidant chamber with no substantial humidity control, is high in non-permeability of liquid fuel, and has good proton conductivity. | 02-26-2009 |
20090208808 | Diaphragm for Direct-Liquid Fuel Cell and Process for Producing the Same - The present invention discloses a membrane for direct-liquid fuel cell, comprised of a layered cation-exchange membrane whose one side is constituted by A) a cation-exchange membrane layer of low water content type having a water content of 1 to 15% by mass at a relative humidity of 50% RH (25° C.) and whose other side is constituted by B) a cation-exchange membrane layer of high water content type having, at a relative humidity of 100% RH (25° C.), a water content which is higher, by 3% by mass ore more, than the water content of the cation-exchange membrane layer of low water content type at a relative humidity of 100% RH (25° C.), the layered cation-exchange membrane having an electrical resistance of 0.5 to 0.01 Ω·cm | 08-20-2009 |
20100003574 | Separation Membrane for Direct Liquid Fuel Cell and Method for Producing Same - In the present invention is disclosed a method for producing a membrane for direct liquid fuel cell, which comprises polymerizing and curing a polymerizable composition containing at least
| 01-07-2010 |
20100266928 | SOLID POLYMER ELECTROLYTE FUEL CELL MEMBRANE - Disclosed is a solid polymer electrolyte fuel cell membrane comprising an anion exchange membrane that contains a hydrocarbon-based anion exchange resin, wherein the water permeability at 25° C. is 1400 g m | 10-21-2010 |
20100279204 | SEPARATION MEMBRANE FOR DIRECT LIQUID FUEL TYPE FUEL CELL & PRODUCTION METHOD THEREOF - Disclosed is a separation membrane for direct liquid fuel cells, which is composed of a quaternary ammonium-type anion exchange membrane. The quaternary ammonium-type anion exchange membrane is produced as follows: a polymerizable composition containing a styrene having a haloalkyl group, a crosslinking polymerizable monomer, a compound having an epoxy group and an effective amount of a polymerization initiator is brought into contact with a porous film, so that the pores of the porous film are filled with the polymerizable composition that is then polymerized therein; then a quaternary ammonium group is introduced into the bromoalkyl group; and then the counter ion of the quaternary ammonium group is ion-exchanged into a hydroxide ion. Also disclosed is a method for producing the quaternary ammonium-type anion exchange membrane. | 11-04-2010 |
20110250525 | SEPARATION MEMBRANE FOR DIRECT LIQUID FUEL CELL AND METHOD FOR PRODUCING THE SAME - Disclosed is a method for producing a membrane for direct liquid fuel cells, wherein a polymerizable composition is brought into contact with a porous membrane so that voids of the porous membrane are filled with the polymerizable composition, then the polymerizable composition is cured by polymerization, and after that a halogenoalkyl group in the resin membrane is converted into a quaternary ammonium group. In this method, the polymerizable composition contains (a) an aromatic polymerizable monomer having an aromatic ring wherein one polymerizable group, at least one halogenoalkyl group and a group which is inert to a reaction converting the at least one halogenoalkyl group into a quaternary ammonium group, are bonded together, (b) a crosslinkable polymerizable monomer and (c) a polymerization initiator. | 10-13-2011 |