无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2025, Vol. 57 ›› Issue (8): 1-11.doi: 10.19964/j.issn.1006-4990.2024-0695

• 综述与专论 •    下一篇

直接电解海水制氢阳极和阴极催化剂的研究进展

王泽辉1(), 李恩泽2, 邱逊钊1, 尚文馨1, 李莎莎1(), 冯国彬1, 石彩霞1   

  1. 1.太原科技大学,山西 太原 030024
    2.山西大学,山西 太原 030006
  • 收稿日期:2024-12-26 出版日期:2025-08-10 发布日期:2025-02-14
  • 通讯作者: 李莎莎(1993— ),女,博士,副教授,硕士生导师,主要从事能源催化的研究;E-mail:lisstylg@hotmail.com
  • 作者简介:王泽辉(1999— ),男,硕士研究生,主要从事能源催化的研究;E-mail:wzh46915@163.com
  • 基金资助:
    国家自然科学基金项目(22278251);山西省自然科学基金项目(202303021221145)

Research progress on anode and cathode electrocatalysts for hydrogen production by directly seawater electrolysis

WANG Zehui1(), LI Enze2, QIU Xunzhao1, SHANG Wenxin1, LI Shasha1(), FENG Guobin1, SHI Caixia1   

  1. 1.Taiyuan University of Science and Technology,Taiyuan 030024,China
    2.Shanxi University,Taiyuan 030006,China
  • Received:2024-12-26 Published:2025-08-10 Online:2025-02-14

摘要:

氢能是一种绿色低碳、用途广泛的二次能源,是国家能源体系的重要组成部分。相比其他制氢方式,电解海水是一种可再生、持续且节约淡水资源的制氢技术。但海水成分复杂,特别是海水中Cl-浓度较高,在电解海水过程中,会发生氯离子氧化反应,与阳极析氧反应发生竞争并腐蚀电极,从而显著降低电解海水制氢效率。综述了电解海水反应过程中涉及的析氧反应(OER)、析氯反应(ClER)、析氢反应(HER)的基本原理,并对最近报道的析氧抑氯、析氢非贵金属基催化剂进行了分析和概括。通过设计具有更低过电位的高活性OER、HER催化剂,在电极-电解液界面构建Cl-阻挡层,用热力学上更有利的电氧化反应代替OER,以及对Cl物种进行原位快速消耗等策略可提升电解海水效率并减缓腐蚀。最后对该领域所面临的挑战和发展方向进行展望,为开发应用于工业化电解海水制氢且高效稳定的阳极和阴极电催化剂提供方向。

关键词: 直接电解海水, 阳极催化剂, 阴极催化剂, 析氧抑氯, 析氢

Abstract:

Hydrogen energy is considered as a green,low-carbon,and widely used secondary energy source,which is an important component for the national energy system.Compared to the other hydrogen production methods,electrolysis of seawater is deemed as the renewable,sustainable and freshwater-saving technology for large-scale production of high-purity H2.However,the composition of seawater is complex,especially the concentration of Cl- in seawater is high,and chloride electro-oxidation reaction will occur in the process of electrolytic seawater,which will compete with the anodic oxygen evolution reaction(OER) and corrode the electrode,thus significantly reducing the efficiency of hydrogen production by seawater splitting.Herein,in this paper,the basic mechanism of the oxygen evolution reaction(OER),chlorine evolution reaction(ClER),and hydrogen evolution reaction(HER) involved in the electrolysis of seawater was reviewed,and the recent reported non-precious metal based electrocatalysts for oxygen evolution and chlorine suppression and HER were summarized and analyzed.The results demonstrated that various strategies,such as designing high activity OER and HER electrocatalysts with lower overpotential,constructing Cl- barrier layer at the interface of electrode-electrolyte,replacing OER with thermodynamically favorable electro-oxidation reaction,and in-situ rapidly consumption of Cl species,could dramatically improve the efficiency of seawater electrolysis and retard of corrosion.Finally,remaining challenges and outlooks of seawater splitting to generate hydrogen were proposed,which could provide guidance and inspiration to rationally design and fabricate OER and HER electrocatalysts for industrial hydrogen production by seawater splitting in future.

Key words: directly electrolysis of seawater, anode electrocatalysts, cathode electrocatalysts, oxygen evolution and chlorine inhibition, hydrogen evolution

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