Electrolyte membrane, electrolyte membrane with catalyst layer, transfer sheet used for producing same, membrane-electrode assembly, water electrolysis device, and method for manufacturing electrolyte membrane with catalyst layer
JPWO2024004856A5Pending Publication Date: 2026-06-19
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Patent Information
- Application Number
- JP2023544501
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Priority Date
- 2023-06-23
- Filing Date
- 2023-06-23
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
In PEM type water electrolysis devices, the bondability between the polymer electrolyte membrane and the catalyst layer is insufficient, leading to potential peeling during operation, which reduces the durability of the device.
Method used
An electrolyte membrane with a specific configuration, where a (B) layer with higher porosity is laminated on at least one surface of a (A) layer, creating a porosity gradient at the interface to enhance bonding properties between the membrane and the catalyst layer.
Benefits of technology
This configuration improves the bonding properties between the electrolyte membrane and the catalyst layer, resulting in enhanced durability and performance of the water electrolysis device.
✦ Generated by Eureka AI based on patent content.
Abstract
The main objective of the present invention is to provide an electrolyte membrane having good bondability with a catalyst layer, said electrolyte membrane comprising a polymer electrolyte-containing layer (A) and a layer (B) disposed on at least one surface of the layer (A), wherein the layer (B) has a higher porosity (X1) in an interface region thereof with the layer (A) than the porosity (X2) of the layer (B) in an interface region on the opposite side from the layer (A).
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