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 ...
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.