Ultrafast Microwave Quasi‐Solid‐State Construction of Os‐OsP₂ with Enhanced Interfacial Spillover for Seawater‐Based Anion Exchange Membrane Electrolyzers

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-04-26 DOI:10.1002/aenm.202501054

Xiaowei Fu, Xingchao Zang, Jinxiao Gao, Hongdong Li, Weiping Xiao, Yingxia Zong, Guangying Fu, Jinsong Wang, Tianyi Ma, Wei Jin, Zexing Wu, Lei Wang

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Abstract

Developing cost‐effective hydrogen evolution reactions (HER) catalysts to replace Pt/C in alkaline seawater media remains a critical challenge. Therefore, the osmium‐osmium phosphide (Os‐OsP2) catalyst is reported with a heterogeneous junction through ultrafast (20 s) microwave quasi‐solid approach for seawater‐splitting under industrial‐grade current density. Experimental and theoretical analysis reveal that the Os‐OsP₂ interface optimizes electronic structure: osmium (Os) sites accelerate water dissociation by lowering the d‐band center, while OsP₂ promotes hydrogen desorption via interfacial spillover, collectively reducing the HER energy barrier. In addition, the catalyst requires only 1.74 V to reach 1 A cm−2 and owns high price activity in the anion exchange membrane water electrolyzer, surpassing commercial Pt/C by 23% in efficiency under identical conditions. Furthermore, it exhibits robust HER activity across a wide pH range and exceptional durability over 100 h in alkaline seawater. Economic evaluation highlights its superior cost activity (85.6 A dollar⁻¹), 90‐fold higher than Pt/C, with hydrogen production costs ($0.86 GGE⁻¹) undercutting the U.S. DOE target. This study provides feasible guidance for the development of high‐performance, cost‐effective catalysts for scalable hydrogen production from seawater.

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海水基阴离子交换膜电解槽界面溢出增强的Os - osp2超快微波准固态构建

开发具有成本效益的析氢反应（HER）催化剂来取代碱性海水介质中的Pt/C仍然是一个关键的挑战。因此，在工业级电流密度下，通过超快（20秒）微波准固体方法，报道了具有非均相结的锇-磷化锇（Os - OsP2）催化剂用于海水分裂。实验和理论分析表明，Os - OsP₂界面优化了电子结构：锇（Os）位点通过降低d带中心加速水的解离，而OsP₂通过界面溢出促进氢的解吸，共同降低了HER能垒。此外，该催化剂只需要1.74 V就能达到1 A cm−2，并且在阴离子交换膜水电解槽中具有较高的价格活性，在相同条件下的效率比商用Pt/C高出23%。此外，它在广泛的pH范围内表现出强大的HER活性，并且在碱性海水中具有超过100小时的耐久性。经济评估突出了其卓越的成本活动（85.6美元一毒血症），比铂/碳高90倍，氢气生产成本（0.86美元一毒血症）低于美国能源部的目标。该研究为开发高性能、低成本的海水制氢催化剂提供了可行的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.