Patent application number | Description | Published |
20080233465 | CATALYST, METHOD FOR PRODUCING CATALYST, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - A catalyst is provided and includes fine catalyst particles of a composition represented by formula (1): Pt | 09-25-2008 |
20080241639 | CATALYST FOR POLYMER SOLID ELECTROLYTE FUEL CELL, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - There is provided a catalyst for a fuel cell, which simultaneously realizes excellent catalytic activity and catalytic stability. The catalyst for a fuel cell comprises a fine particle of a metal represented by formula: | 10-02-2008 |
20090029219 | CATALYST, PROCESS FOR PRODUCING THE CATALYST, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - This invention provides a highly active and stable catalyst, which is suitable for use in fuel cells while suppressing the amount of expensive noble metals used, i.e., platinum (Pt) and ruthenium (Ru), and a process for producing the catalyst, and a membrane electrode assembly and fuel cell using the catalyst. The catalyst comprises: an electro conductive support; and catalyst particles supported on the electro conductive support and having a composition represented by formula (1) | 01-29-2009 |
20090050484 | PROCESS FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL USING THE MEMBRANE ELECTRODE ASSEMBLY PRODUCED BY THE PROCESS - This invention provides a process for producing a membrane electrode assembly which has high and stable catalytic activity, and suppressed deterioration in catalytic activity during operation, and can prevent a deterioration in performance attributable to a structural factor of the membrane electrode assembly. The process comprises the step of, after the washing/removing step, drying the catalyst electrode in an atmosphere having a lower oxygen partial pressure than the air. The anode/cathode is a covered catalyst electrode having a structure formed by supporting/depositing a catalytically active material composed mainly of platinum/ruthenium subjected to the potential holding step, the washing/removing step, and the drying step, on a porous electroconductive carrier to cover at least a part of the porous electroconductive carrier with the ion conductive material. | 02-26-2009 |
20090081391 | METHANOL OXIDATION CATALYST - A methanol oxidation catalyst is provided, which includes nanoparticles having a composition represented by the following formula 1: | 03-26-2009 |
20090082198 | METHANOL OXIDATION CATALYST - A methanol oxidation catalyst is provided, which includes nanoparticles having a composition represented by the following formula (1): | 03-26-2009 |
20090246589 | FUEL CELL CATALYST, PROCESS FOR PREPARATION OF THE SAME, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL EMPLOYING THE CATALYST - The present invention provides a catalyst having high activity and excellent stability, a process for preparation of the catalyst, a membrane electrode assembly, and a fuel cell. The catalyst of the present invention comprises an electronically conductive support and catalyst fine particles. The catalyst fine particles are supported on the support and are represented by the formula (1): Pt | 10-01-2009 |
20090247401 | METHANOL OXIDATION CATALYST - A methanol oxidation catalyst comprises a material of composition: | 10-01-2009 |
20090257931 | METHOD OF RECOVERING NOBLE METALS AND RECOVERING SYSTEM FOR NOBLE METALS - A recovering method is provided, which includes contacting a solid component containing Ru with an aqueous solution to create a Ru compound, and causing the Ru compound to selectively elute in the aqueous solution. The aqueous solution is formed of at least one selected from the group consisting of aqueous solutions A, B, C, D, and E. The aqueous solution A comprises an acid and formic acid, alcohols, aldehydes, a compound having a hemiacetal structure or a compound having an acetal structure. The aqueous solution B comprises an acid and a compound which creates, in the coexistence thereof with the acid, formic acid, alcohols, aldehydes, a compound having a hemiacetal structure or a compound having an acetal structure. The aqueous solution C comprises an acid and sugars. The aqueous solution D comprises formic acid, and the aqueous solution E comprises oxalic acid. | 10-15-2009 |