WO2026013411 - CATALYST-COATED POLYMER ELECTROLYTE MEMBRANES AND METHODS FOR THEIR MANUFACTURE
National phase entry is expected:
Publication Number
WO/2026/013411
Publication Date
15.01.2026
International Application No.
PCT/GB2025/051532
International Filing Date
10.07.2025
Title **
[English]
CATALYST-COATED POLYMER ELECTROLYTE MEMBRANES AND METHODS FOR THEIR MANUFACTURE
[French]
MEMBRANES ÉCHANGEUSES DE PROTONS REVÊTUES DE CATALYSEUR ET LEURS PROCÉDÉS DE FABRICATION
Applicants **
JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LIMITED
Inventors
CLARK, Alexander
COOLE, Jake
DICKINSON, Angus John
Priority Data
2410198.2
12.07.2024
GB
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2256 | |
| EPO | Filing, Examination, Granting | 12245 | |
| Japan | Filing, Examination, Granting | 2422 | |
| South Korea | Filing, Examination, Granting | 2545 | |
| USA | Filing, Examination, Granting | 5940 |
Total:
25,408
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Abstract[English]
CATALYST-COATED POLYMER ELECTROLYTE MEMBRANES AND METHODS FOR THEIR MANUFACTURE A method for the manufacture of catalyst-coated polymer electrolyte membranes for water electrolysis is provided. The method comprises the steps of forming a polymer electrolyte membrane on a first catalyst layer comprising a platinum-containing catalyst on a carbon support material and a catalyst layer ion-conducting polymer. The first catalyst layer has an expected effective platinum surface area in the range of and including 5 to 200 cm2Pt/cm2 and a carbon content in the range of and including 30 to 60 wt%. Catalyst coated membranes obtainable by the method are also provided. [Figure 2][French]
L'invention concerne un procédé de fabrication de membranes échangeuses de protons revêtues de catalyseur pour l'électrolyse de l'eau. Le procédé comprend les étapes consistant à former une membrane échangeuse de protons sur une première couche de catalyseur comprenant un catalyseur qui contient du platine sur un matériau de support de carbone et un polymère conducteur d'ions de couche de catalyseur. La première couche de catalyseur présente une surface de platine efficace attendue dans la plage de 5 à 200 cm2Pt/cm2, ces valeurs étant incluses, et une teneur en carbone dans la plage de 30 à 60 % en poids, ces valeurs étant incluses. L'invention concerne également des membranes revêtues de catalyseur pouvant être obtenues au moyen du procédé.