A structured separator, its preparation method and use

By introducing structural reinforcing wires and support lines at a specific angle in the vertical direction into the alkaline water electrolysis diaphragm, the problems of high diaphragm resistance and bubble accumulation were solved, thereby improving the efficiency and mechanical strength of hydrogen production from water electrolysis.

CN122189754APending Publication Date: 2026-06-12BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Filing Date
2024-12-12
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing alkaline water electrolysis membranes suffer from high resistance, bubble accumulation, and poor mechanical strength, which affect the efficiency of hydrogen production through water electrolysis.

⚗Method used

In an alkaline water electrolysis composite membrane or an ion solvation membrane, structural reinforcing fibers are introduced and their angles with the support lines and the vertical direction are adjusted to be greater than 0 degrees and less than 90 degrees or less than or equal to 45 degrees. Metal or inorganic oxide fibers are then laid on the membrane surface and the structured membrane is formed by hot pressing.

🎯Benefits of technology

It improves the conductivity and hydrophilicity of the diaphragm, enhances tensile strength, reduces bubble accumulation, and increases the current increase rate and electrolysis efficiency of water electrolysis.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the field of water electrolysis technology, specifically relating to a structured membrane, its preparation method, and its applications. The membrane includes: a membrane body, and a structural reinforcement layer bonded to the membrane body; the membrane body is either an alkaline water electrolysis composite membrane or an ion-solubilized membrane; when the membrane body is an alkaline water electrolysis composite membrane, it has a support layer with support lines; the structural reinforcement layer has structural reinforcement filaments, with the angle between the structural reinforcement filaments and the support lines greater than 0 degrees and less than 90 degrees; when the membrane body is an ion-solubilized membrane, the angle between the structural reinforcement filaments and the vertical direction is greater than 0 degrees and less than 45 degrees. This application involves the orderly deposition of structural reinforcement filaments on the membrane surface. The addition of these filaments has three advantages: it can improve the catalytic activity of the membrane, significantly increase the tensile strength of the membrane along the direction of the structural reinforcement filaments, and to a certain extent, regulate bubble behavior and reduce bubble accumulation.
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