Kottaichamy Alagar Raja, Marichelvam Thamaraichelvan, Tzadikov Jonathan, Vaza Roni Cohen, Volokh Michael, Barzilai Shmuel, Shalom Menny
Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel.
Department of Chemistry, Nuclear Research Centre-Negev, Beer-Sheva, P.O. Box 9001, Israel.
Angew Chem Int Ed Engl. 2025 Jul 7;64(28):e202502735. doi: 10.1002/anie.202502735. Epub 2025 May 12.
Hydrogen (H) production through water electrolysis is a promising route for sustainable energy storage. However, conventional water electrolysis faces several challenges, such as large thermodynamic potential gaps and sluggish oxygen evolution kinetics, which lead to high electricity consumption and limitations in H storage and transportation. A promising approach to overcoming these hurdles is hybrid water electrolysis, which integrates alternative, thermodynamically favorable reactions at the anode to enhance efficiency. In this study, we explore how peroxide redox electrocatalysis can address critical barriers in sustainable H production, storage, and transport. By leveraging a cost-effective and highly efficient peroxide redox electrocatalyst, we demonstrate various electrolysis configurations that significantly reduce the required cell voltage-from the standard 1.23 V down to -0.06 V, highlighting its potential for scalable and economically viable electrolysis methodologies for H production.
通过水电解制氢是可持续储能的一条有前景的途径。然而，传统水电解面临着几个挑战，如较大的热力学电位差和缓慢的析氧动力学，这导致高耗电量以及氢储存和运输方面的限制。一种克服这些障碍的有前景的方法是混合水电解，它在阳极整合了替代的、热力学上有利的反应以提高效率。在本研究中，我们探索过氧化物氧化还原电催化如何解决可持续制氢、储氢和运氢中的关键障碍。通过利用一种经济高效的过氧化物氧化还原电催化剂，我们展示了各种电解配置，这些配置可显著降低所需的电池电压——从标准的1.23伏降至-0.06伏，突出了其在用于制氢的可扩展且经济可行的电解方法方面的潜力。
