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Updated: Jul 2, 2025

Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Challenges and progress in oxygen evolution reaction catalyst development for seawater electrolysis for hydrogen
Jack Corbin1, Mikey Jones1, Cheng Lyu1
1Renewable Energy Group, Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Penryn Campus Cornwall TR10 9FE UK.
Abstract:
Production of green hydrogen on a large scale can negatively impact freshwater resources. Therefore, using seawater as an electrolyte in electrolysis is a desirable alternative to reduce costs and freshwater reliance. However, there are limitations to this approach, primarily due to the catalyst involved in the oxygen evolution reaction (OER). In seawater, the OER features sluggish kinetics and complicated chemical reactions that compete. This review first introduces the benefits and challenges of direct seawater electrolysis and then summarises recent research into cost-effective and durable OER electrocatalysts. Different modification methods for nickel-based electrocatalysts are thoroughly reviewed, and promising electrocatalysts that the authors believe deserve further exploration have been highlighted.
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