W-mediated electron accumulation in Ru-O-W motifs enables ultra-stable oxygen evolution reaction in acid

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2025-01-22 DOI:10.1002/anie.202422707

Chunzhong Li, Kai Zhou, Heng Liu, Zhongliang Liu, Xiaoning Li, Nana Wang, Mingyue Wang, Tianrui Xue, Yongjun Shen, Hao Li, Huihui Li

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引用次数: 0

Abstract

The development of efficient and durable oxygen evolution reaction (OER) catalysts is crucial for advancing proton exchange membrane water electrolysis (PEMWE) technology, especially in the pursuit of non-iridium alternatives. Herein, we report a Zn, W co-doping Ru3Zn0.85W0.15Ox (RZW) ternary oxide catalyst that exhibits a low overpotential of 200 mV and remarkable stability for over 4000 hours at 10 mA cm-2 in 0.1 M HClO4. The incorporation of highly electronegative W facilitates the efficient capture of electrons released from the sacrificial Zn species during OER, and subsequently mediated to Ru sites. The observed enhancement in electron density within the stable Ru-O-W motifs substantially improve the anti-overoxidation properties of the Ru active sites. Our findings highlight the importance of strategic metal doping in modulating the electronic structure of OER catalysts during operation, thereby facilitating the development of practical and long-lasting water electrolysis technologies.

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w在Ru-O-W基序中介导的电子积累使酸中超稳定的析氧反应成为可能

开发高效、耐用的析氧反应（OER）催化剂对于推进质子交换膜水电解（PEMWE）技术，特别是寻求无铱替代品至关重要。本文报道了一种Zn， W共掺杂Ru3Zn0.85W0.15Ox （RZW）三元氧化物催化剂，该催化剂具有200 mV的低过电位，并且在0.1 M HClO4中，在10 mA cm-2条件下具有超过4000小时的稳定性。高电负性W的加入促进了OER过程中牺牲Zn释放的电子的有效捕获，并随后介导到Ru位点。在稳定的Ru- o - w基序中观察到的电子密度的增强大大提高了Ru活性位点的抗过氧化性能。我们的研究结果强调了战略性金属掺杂在OER催化剂运行过程中调节电子结构的重要性，从而促进了实用和持久的水电解技术的发展。

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

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.