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1. WO2020112690 - CATALYST LAYER WITH EXTENDED SURFACE AREA AND METHOD OF FORMING SUCH CATALYST LAYER FOR POLYMER ELECTROLYTE FUEL CELLS

Publication Number WO/2020/112690
Publication Date 04.06.2020
International Application No. PCT/US2019/063099
International Filing Date 25.11.2019
IPC
H01M 4/88 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
H01M 4/92 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
90Selection of catalytic material
92Metals of platinum group
H01M 8/1004 2016.01
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
1004characterised by membrane-electrode assemblies
H01M 8/1018 2016.01
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
1016characterised by the electrolyte material
1018Polymeric electrolyte materials
CPC
H01M 4/88
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
H01M 4/92
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
90Selection of catalytic material
92Metals of platinum group
H01M 8/1004
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
1004characterised by membrane-electrode assemblies [MEA]
H01M 8/1018
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
1016characterised by the electrolyte material
1018Polymeric electrolyte materials
Applicants
  • THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY [US]/[US]
  • VOLKSWAGEN AKTIENGESELLSCHAFT [DE]/[DE]
Inventors
  • XU, Shicheng
  • PRINZ, Friedrich B.
  • SCHLADT, Thomas
  • GRAF, Tanja
  • MUELLER, Jonathan Edward
  • KIRSCH, Sebastian
  • HUEBNER, Gerold
  • GLAVAS, Vedran
Agents
  • LIU, Cliff Z.
  • DANIELSON, Mark J.
Priority Data
62/771,54026.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CATALYST LAYER WITH EXTENDED SURFACE AREA AND METHOD OF FORMING SUCH CATALYST LAYER FOR POLYMER ELECTROLYTE FUEL CELLS
(FR) COUCHE DE CATALYSEUR À SURFACE ÉTENDUE ET PROCÉDÉ DE FORMATION D'UNE TELLE COUCHE DE CATALYSEUR POUR PILES À COMBUSTIBLE À ÉLECTROLYTE POLYMÈRE
Abstract
(EN)
A manufacturing process includes: depositing a catalyst support on a gas diffusion layer to form a catalyst support-coated gas diffusion layer; depositing a catalyst on the catalyst support-coated gas diffusion layer to form a catalyst-coated gas diffusion layer; and depositing an ionomer on the catalyst-coated gas diffusion layer to form an ionomer-coated gas diffusion layer. A membrane electrode assembly for a fuel cell includes: a gas diffusion layer; a polymer electrolyte membrane; and a catalyst layer disposed between the gas diffusion layer and the polymer electrolyte membrane, wherein the catalyst layer includes an ionomer, and a concentration of the ionomer varies within the catalyst layer according to a concentration profile.
(FR)
L'invention porte sur un procédé de fabrication qui comprend : le dépôt d'un support de catalyseur sur une couche de diffusion de gaz (GDL) pour former une couche de diffusion de gaz revêtue de support de catalyseur ; le dépôt d'un catalyseur sur la couche de diffusion de gaz revêtue de support de catalyseur pour former une couche de diffusion de gaz revêtue de catalyseur ; et le dépôt d'un ionomère sur la couche de diffusion de gaz revêtue de catalyseur pour former une couche de diffusion de gaz revêtue d'ionomère. Un assemblage électrode-membrane (MEA) destiné à une pile à combustible comprend : une couche de diffusion de gaz ; une membrane électrolytique polymère ; et une couche de catalyseur disposée entre la couche de diffusion de gaz et la membrane électrolytique polymère, la couche de catalyseur comprenant un ionomère, et une concentration du ionomère variant à l'intérieur de la couche de catalyseur selon un profil de concentration.
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