Advances and challenges in photo/electrocatalytic seawater splitting for sustainable hydrogen production: A comprehensive review

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-04-04 DOI:10.1016/j.ijhydene.2025.03.168

Brahmari Honnappa , Selvaganapathy Ganesan , Thangavelu Kokulnathan , Arunkumar Palaniappan , Karthikeyan Sekar

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Abstract

Water splitting is a promising method for hydrogen production, providing a clean energy source with a high energy yield. To meet long-term global energy demands, breakthroughs in hydrogen production, storage, and transportation are crucial. The direct use of seawater for hydrogen production is gaining popularity, as it reduces costs and efficiently utilizes saltwater resources. Technologies like photocatalysis, electrocatalysis, and photoelectrocatalysis facilitate seawater splitting by converting sunlight into hydrogen fuel, thus enabling green hydrogen production. For example, photocatalytic hydrogen generation mimics artificial photosynthesis, offering a simple and cost-effective approach. Our review of research on photo/electrocatalytic seawater splitting highlights both its limitations and future potential for sustainable fuel sources. Key challenges, such as low conversion efficiency and catalyst instability, need to be addressed. Future studies should focus on developing stable catalysts and optimizing mass transport at the electrode-electrolyte interface.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.