Electrocatalyst and electrolyser comprising the same
Doped ruthenium and iridium-based electrocatalysts address the challenges of chloride-induced corrosion and low durability in PEM electrolyzers, enabling stable operation with seawater by enhancing OER selectivity and reducing CIER, thus improving the efficiency and longevity of water electrolysis systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ADELAIDE UNIVERSITY
- Filing Date
- 2025-12-12
- Publication Date
- 2026-06-18
AI Technical Summary
Current electrocatalysts for oxygen evolution reaction (OER) in water electrolysis, particularly in proton exchange membrane (PEM) electrolyzers, suffer from low mass activity, durability, and are prone to chloride-induced corrosion, limiting their effectiveness with impure water sources like seawater.
Development of ruthenium and/or iridium-based electrocatalysts doped with metals like cobalt or nickel, which enhance stability and selectivity for OER over chlorine evolution reaction (CIER) even in the presence of chloride ions, using methods such as ion exchange and molten salt-assisted processes.
The doped electrocatalysts exhibit improved durability and stability, allowing PEM electrolyzers to operate stably for over 100 hours with seawater as feed, reducing CIER and maintaining high OER efficiency even at chloride concentrations up to 50 ppm.
Smart Images
Figure AU2025051425_18062026_PF_FP_ABST