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1. (US20190157686) METHOD FOR PRODUCING A SUPPORTED CATALYST MATERIAL FOR A FUEL CELL

Office : United States of America
Application Number: 16313874 Application Date: 26.06.2017
Publication Number: 20190157686 Publication Date: 23.05.2019
Publication Kind : A1
Prior PCT appl.: Application Number:PCTEP2017065642 ; Publication Number: Click to see the data
IPC:
H01M 4/88
H01M 4/86
H01M 4/92
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
86
Inert electrodes with catalytic activity, e.g. for fuel cells
88
Processes of manufacture
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
86
Inert electrodes with catalytic activity, e.g. for fuel cells
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
86
Inert electrodes with catalytic activity, e.g. for fuel cells
90
Selection of catalytic material
92
Metals of platinum group
CPC:
H01M 2008/1095
H01M 4/8657
H01M 4/8817
H01M 4/8867
H01M 4/921
H01M 4/926
Applicants: VOLKSWAGEN AG
AUDI AG
Inventors: Tanja GRAF
Thomas SCHLADT
Priority Data: 10 2016 111 981.4 30.06.2016 DE
Title: (EN) METHOD FOR PRODUCING A SUPPORTED CATALYST MATERIAL FOR A FUEL CELL
Abstract: front page image
(EN)

The invention relates to a method for producing a supported catalyst material for a fuel-cell electrode, as well as a catalyst material that can be produced using said method. In the method, first, a carbide-forming substance is deposited from the gas phase onto the carbon-based carrier material to produce a carbide-containing layer and, then, a catalytically-active precious metal or an alloy thereof from the gas phase is deposited to form a catalytic layer. By chemical reaction of the carbide-forming substance with the carbon, very stable carbide bonds are formed at the interface, while an alloy phase of the two forms at the interface between carbide-forming substance and precious metal. Overall, a very stable adhesion of the catalytic precious metal to the substrate results, whereby degradation effects are reduced, and the life of the material is extended.


Also published as:
CN109314253KR1020190024902EP3479429WO/2018/001930