Membrane electrode assembly for COx reduction

The MEA design with a bipolar interface and covalent crosslinks between polymer layers addresses inefficiencies in CO2 reduction by enhancing conductivity and selectivity, leading to improved efficiency and longevity in CO2 reduction processes.

JP2026113542APending Publication Date: 2026-07-07TWELVE BENEFIT CORP

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TWELVE BENEFIT CORP
Filing Date
2026-03-30
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing membrane electrode assemblies (MEAs) for CO2 reduction face challenges such as low efficiency, short lifespan, and undesirable parasitic reactions, particularly in water electrolytic cells and fuel cells, due to the limitations of ion-conducting polymers and the inability to create an optimal operating environment for CO2 reduction.

Method used

The MEA design incorporates a bipolar interface with covalent crosslinks between anion- and cation-conducting polymer layers, featuring interpenetration regions and specific ion-conducting polymers to enhance conductivity and selectivity, minimizing parasitic reactions and promoting efficient CO2 reduction.

Benefits of technology

This configuration improves the efficiency and longevity of CO2 reduction processes by reducing unwanted side reactions and maintaining the integrity of the MEA, enabling high-yield production of desired products like carbon monoxide and organic compounds.

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Abstract

CO2 without delamination x We provide a membrane electrode assembly (MEA) for reduction. [Solution] The MEA 200 has a cathode layer 220 and an anode layer 240, and an ion-conducting polymer layer 260 that provides a path for ions to move between the cathode layer 220 and the anode layer 240. The ion-conducting layer 260 is a polymer electrolyte membrane (PEM) 265, an optional cathode buffer layer 225, and / or an optional anode buffer layer 245. The adhesion between the layers is by interpenetration or specified covalent crosslinking. Bipolar and anion exchange membrane (AEM) single-layer MEAs are described along with their components and associated manufacturing methods.
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