Cross-Flow Water Electrolysis
Patent No. EP4004259 (titled "Cross-Flow Water Electrolysis") was filed by Thyssenkrupp Nucera on Aug 19, 2020. The application was issued on Oct 19, 2022.
Patent Summary
Method for alkaline water electrolysis that maintains constant electrolyte concentration between anode and cathode half-cells by pumping the electrolyte in a closed circuit, suppressing Donnan potential and flow currents that reduce efficiency. The method uses a cation exchange membrane and operates at high flow rates (1-6 L/h per L half-cell volume) and moderate temperatures (up to 80°C) to achieve high efficiency and purity of the product gases.
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Patent Oppositions (2)
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Dossier Documents
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Date
Description
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EP4004259
- Application Number
- EP20758201A
- Filing Date
- Aug 19, 2020
- Status
- Opposition Rejected
- Jul 11, 2025
- Publication Date
- Oct 19, 2022
- External Links
- Slate, EP4004259B1, Google Patents