Electrolyser for hydrogen production

The electrolyser design addresses the challenges of mechanical resistance, assembly efficiency, and cost-effectiveness by incorporating a metal frame with an elastomeric layer and internal clamping means, achieving effective high-pressure operation and reduced material usage and waste.

WO2025045641A1PCT designated stage expired Publication Date: 2025-03-06INDUSTRIE DE NORA SPA
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Patent Information

Application Number
PCT/EP2024/073264
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-08-25
Filing Date
2024-08-20
Publication Date
2025-03-06

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Abstract

The present invention refers to an electrolyser (1) for the production of hydrogen from an alkaline electrolyte. The electrolyser (1) comprises a first header (2) and a second header (3) between which a plurality of elementary cells (4) and a plurality of bipolar plates (5) are stacked. Each bipolar plate (5) separates two adjacent elementary cells. The electrolyser (1) further comprises a plurality of clamping elements (20) that mechanically connect said headers (2, 3). Each of the elementary cells (4) comprises a frame (6) defining a chamber (6A), having an anodic section and a cathodic section, in which an anodic electrode (7) and a cathodic electrode (8) are at least in part housed. Each of the elementary cells (4) further comprise a separator element (10) that separates the anodic section from the cathodic section. According to the invention, each of the frames (6) comprises first through holes (61) and each of the bipolar plates (5) comprises second through holes (51), wherein each of said first through holes (61) of one frame (6) is mutually aligned with a corresponding first through holes (61) of each of the another frames (6) and with one of said second through holes (51) of each bipolar plate (5), wherein each one of said clamping means (20) extends through said through holes (51, 61) mutually aligned.
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Citation Information

Patent Citations

  • Expanded ion-exchange membrane electrolysis cell

    US20200340129A1

  • Bipolar separator for electrochemical reactor

    US20220384821A1

  • Cell frame for an electrolytic cell

    US20240352593A1

  • Multi-component bipolar plate for an electrochemical cell

    WO2017027536A1

  • Electrochemical system with confined electrolyte

    WO2020160424A1

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    WO2026146401A1