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1. WO2004022209 - VAPOR DEPOSITED CATALYSTS AND THEIR USE IN FUEL CELLS

Publication Number WO/2004/022209
Publication Date 18.03.2004
International Application No. PCT/US2003/020893
International Filing Date 30.06.2003
Chapter 2 Demand Filed 23.01.2004
IPC
C23C 14/18 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
06characterised by the coating material
14Metallic material, boron or silicon
18on other inorganic substrates
CPC
B01J 25/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
25Catalysts of the Raney type
B01J 35/065
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
06Fabrics or filaments
065Membranes
B01J 37/0238
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
0238via the gaseous phase-sublimation
B01J 37/347
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
34Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; ; Ionic sputtering; Flame or plasma spraying; Particle radiation
341making use of electric or magnetic fields, wave energy or particle radiation
347Ionic or cathodic spraying; Electric discharge
C23C 14/185
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
06characterised by the coating material
14Metallic material, boron or silicon
18on other inorganic substrates
185by cathodic sputtering
H01M 2008/1095
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
10Fuel cells with solid electrolytes
1095Fuel cells with polymeric electrolytes
Applicants
  • E.I. DU PONT DE NEMOURS AND COMPANY [US]/[US] (AllExceptUS)
  • FIGUEROA, Juan, C. [US]/[US] (UsOnly)
  • LUNDGREN, Cynthia, A. [US]/[US] (UsOnly)
Inventors
  • FIGUEROA, Juan, C.
  • LUNDGREN, Cynthia, A.
Agents
  • FICKES, Daphne, P.
Priority Data
60/393,35101.07.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VAPOR DEPOSITED CATALYSTS AND THEIR USE IN FUEL CELLS
(FR) CATALYSEURS DEPOSES EN PHASE VAPEUR ET LEURS UTILISATIONS DANS DES PILES A COMBUSTIBLES
Abstract
(EN)
The invention provides a catalyst useful in a proton exchange membrane containing fuel cell for the electrooxidation of fuels prepared by the chemical activation of vapor deposited substantially semicrystalline PtXaAlb onto a substrate, wherein X is selected from the group consisting of Ru, Rh, Mo, W, V, Hf, Zr, Nb and Co, and a is at least 0.001, and b is at least 0.85• (1+a), with the proviso that when a=1 and b=8, X is only selected from the group consisting of W, V, Hf, Zr, Nb, and Co. These catalysts have an onset voltage for the electrooxidation of methanol of less than about 240 mV versus a saturated calomel electrode (SCE). They are useful in making diffusion backing electrodes and catalyst coated membranes for use in fuel cells.
(FR)
L'invention concerne un catalyseur, utile dans une pile à combustible comprenant une membrane d'échange de protons, pour l'électro-oxydation de combustibles, préparée par activation chimique de PtXaAlb sensiblement semi-cristallin déposé en phase vapeur sur un substrat, X étant choisi dans le groupe comprenant Ru, Rh, Mo, W, V, Hf, Zr, Nb et Co, avec a au moins égal à 0,001, et b au moins égal à 0,85 X (1+a), sous réserve que, lorsque a = 1 et b = 8, X soit seulement choisi dans le groupe comprenant W, V, Hf, Zr, Nb, et Co. Ces catalyseurs possèdent une tension de début d'activité concernant l'électro-oxydation de méthanol inférieure à environ 240 mV mesurée contre une électrode au calomel saturé (SCE). Ces catalyseurs sont utiles dans la fabrication d'électrodes à dos diffuseur et de membranes à revêtement de catalyseur destinées aux piles à combustibles.
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