WO2025163301 - CATALYST-COATED MEMBRANES FOR WATER ELECTROLYSIS
National phase entry is expected:
Publication Number
WO/2025/163301
Publication Date
07.08.2025
International Application No.
PCT/GB2025/050148
International Filing Date
27.01.2025
Title **
[English]
CATALYST-COATED MEMBRANES FOR WATER ELECTROLYSIS
[French]
MEMBRANES REVÊTUES DE CATALYSEUR POUR ÉLECTROLYSE DE L'EAU
Applicants **
JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LIMITED
Inventors
HAMILTON, Hugh Gavin Charles
TINT, Saxon Douglas
ZALITIS, Christopher Mark
Priority Data
63/626,568
30.01.2024
US
2404058.6
21.03.2024
GB
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
|
* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1992 | |
| EPO | Filing, Examination, Granting | 8126 | |
| Japan | Filing, Examination, Granting | 2062 | |
| South Korea | Filing, Examination, Granting | 1916 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,836
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Abstract[English]
A catalyst-coated membrane for a water electrolyser is provided. The catalyst-coated membrane comprises a thin film coating of an oxide of iridium on a first major surface of an electrolyte membrane. The thin film coating satisfies the following requirements: (i) the thin film coating has a first region adjacent to the electrolyte membrane and a second region distal to the electrolyte membrane; (ii) the porosity of the second region of the thin film coating is higher than the porosity of the first region of the thin film coating; and (iii) the thin film coating has a total porosity in the range of and including 20 to 60 vol%.[French]
L'invention concerne une membrane revêtue de catalyseur pour un électrolyseur d'eau. La membrane revêtue de catalyseur comprend un revêtement en film mince d'un oxyde d'iridium sur une première surface principale d'une membrane électrolytique. Le revêtement en film mince satisfait les exigences suivantes : (i) le revêtement en film mince comporte une première région adjacente à la membrane électrolytique et une seconde région distale par rapport à la membrane électrolytique ; (ii) la porosité de la seconde région du revêtement en film mince est supérieure à la porosité de la première région du revêtement en film mince ; et (iii) le revêtement en film mince a une porosité totale comprise dans la plage de 20 à 60% en volume, bornes incluses.