Cell for electrolysis with integral bonding of multi-layer components, and method for producing such a cell

EP4758279A1Pending Publication Date: 2026-06-17SIEMENS ENERGY GLOBAL GMBH & CO KG
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
SIEMENS ENERGY GLOBAL GMBH & CO KG
Filing Date
2024-08-28
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

The current production and assembly of electrochemical cells, such as PEM electrolyzers, are complex and expensive due to the need for precise alignment and assembly of multiple components, which can lead to electrical contact resistances, corrosion, and inefficiencies.

Method used

A cell design featuring a fabric closure between bipolar plates (BPP) and porous transport layers (PTLs), which simplifies the assembly process by reducing the number of contact points and interfaces where corrosion can occur, and allows for pre-assembly of components before integration into the cell frame.

Benefits of technology

The fabric closure reduces electrical contact resistances and corrosion, simplifies the assembly process, and potentially reduces manufacturing costs and improves the efficiency and lifespan of the electrochemical cells.

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Abstract

The invention relates to a cell (1) for electrolysis, at least having: a layer sequence consisting of a bipolar plate (BPP), at least one cathodic gas diffusion layer (PTLC), a proton exchange membrane (PEM) between catalyst layers (CLC, CLA) or catalyst-coated membrane (CCM), at least one anodic gas diffusion layer (PTLA), which are arranged in a frame (4), wherein there is an integral bond (Con) between the individual layers of at least the BPP, PTLAC(s) and / or PTLBC(s).
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