Structural design of electrochemical cells

JP2024544360A5Pending Publication Date: 2025-11-06EVONIK OPERATIONS GMBH
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Patent Information

Application Number
JP2024526719
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2021-11-16
Filing Date
2022-11-09
Publication Date
2025-11-06

AI Technical Summary

Technical Problem

Existing electrochemical cells for alkaline membrane water electrolysis (AEMWE) face challenges in achieving industrial-scale hydrogen and oxygen production efficiently and cost-effectively, with issues such as increased contact resistance, material degradation, and gas backmixing leading to safety hazards.

Method used

The use of catalytically active textile fabrics as both anode and cathode, which integrate the functions of porous transport layer and flow field, eliminating the need for separate components and reducing electrical resistance, while utilizing ionomers for catalyst immobilization and anion-conducting membranes to enhance efficiency and stability.

Benefits of technology

This design enables energy-efficient hydrogen and oxygen production with lower production costs by minimizing contact resistance and material degradation, allowing for compact, cost-effective electrolyzers suitable for industrial applications.

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Abstract

The present invention relates to an electrochemical cell comprising an anode, a cathode, and an anion conducting membrane disposed between the anode and the cathode. The present invention also relates to the use of the electrochemical cell in a process for producing hydrogen and oxygen by the electrochemical decomposition of water. The present invention further relates to an electrolyzer having a multiplicity of cells, and a method for manufacturing the electrolyzer.
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