Splitting Oceans for Energy: Recent Advances in Catalyst Stability for Seawater Electrolysis

Area of Science:

• Electrochemistry
• Materials Science
• Sustainable Energy

Background:

• Growing global freshwater scarcity necessitates alternative water sources for hydrogen production.
• Seawater electrolysis offers a sustainable pathway for green hydrogen generation, crucial for carbon neutrality and addressing the energy crisis.
• Significant progress has been made in developing high-performance electrocatalysts for efficient seawater splitting.

Purpose of the Study:

• To systematically review current advancements in electrocatalyst stability for seawater electrolysis.
• To investigate future research directions and prospects for improving practical applications of seawater electrolysis technologies.
• To highlight strategies for enhancing the stability and performance of electrocatalysts in seawater environments.

Main Methods:

• Review of recent literature on electrocatalyst development for seawater electrolysis.
• Analysis of various catalyst materials including noble metals, alloys, transition metals, oxides, carbides, nitrides, and phosphides.
• Examination of innovative approaches such as composite catalysts and optimized support materials.

Main Results:

• Progress in developing stable electrocatalysts using transition metal-based sulfides, nitrides, carbides, phosphides, oxides, and hydroxides.
• Identification of composite catalysts and optimized support materials as key strategies for enhancing catalyst stability.
• Demonstration of the potential of various materials to improve the efficiency and durability of seawater electrolysis.

Conclusions:

• Continued research into stable, high-performance electrocatalysts is essential for advancing seawater electrolysis.
• Overcoming existing barriers through novel catalyst development and system optimization is key to commercializing seawater-based hydrogen production.
• Seawater electrolysis holds significant promise for sustainable hydrogen generation, contributing to a hydrogen economy and carbon neutrality.