Unveiling the mysteries of hydrogen spillover phenomenon in hydrogen evolution reaction: Fundamentals, evidence and enhancement strategies

IF 20.3 1区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR
Shan Zhao, Zhen-Hong Wang, Jing-Yu Wang, Peng-Fei Wang, Zong-Lin Liu, Jie Shu, Ting-Feng Yi
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Abstract

The phenomenon of hydrogen spillover is a dynamic behavior during catalytic reactions and has been a prominent area of research in the field of thermal catalysis. This concept has become a new focus of research in the field of hydrogen evolution reaction (HER) in recent years. The hydrogen spillover effect has a pivotal effect on modulating the active sites of catalysts and enhancing catalytic activity, which also provides a novel perspective for optimizing HER catalysts. While some advancements have been achieved in understanding the hydrogen spillover phenomenon, the existing review is deficient in a systematic overview of the mechanism of hydrogen spillover occurrence during HER and a summary of the evidence to confirm the occurrence of the hydrogen spillover phenomenon particularly. Furthermore, a comprehensive summary of the specific strategies to optimize the catalytic system using this effect is lacking. In light of the aforementioned considerations, this review aims to conduct a comprehensive summary of the fundamental mechanisms underlying the phenomenon of hydrogen spillover, with a particular focus on the evidence presented in experimental studies. Following a comprehensive examination of the underlying mechanism and supporting evidence, the discussion turns to the question of how the hydrogen spillover effect can be strategically enhanced to optimize the overall performance of HER. Finally, the opportunities and challenges facing this research area are discussed, and potential future research directions are outlined. This review not only enhances comprehension of how hydrogen spillover occurs in the HER process but also offers invaluable theoretical insight and practical strategies for the creation of new and efficient catalysts.

Abstract Image

揭开氢进化反应中氢溢出现象的神秘面纱:基本原理、证据和增强策略
氢溢出现象是催化反应过程中的一种动态行为,一直是热催化领域的一个突出研究领域。近年来,这一概念已成为氢进化反应(HER)领域研究的新焦点。氢溢出效应在调节催化剂活性位点和提高催化活性方面具有举足轻重的作用,这也为优化 HER 催化剂提供了一个新的视角。尽管在理解氢溢出现象方面已经取得了一些进展,但现有综述在系统概述 HER 过程中氢溢出发生的机理以及总结证实氢溢出现象发生的证据方面还存在不足。此外,还缺乏对利用这种效应优化催化系统的具体策略的全面总结。鉴于上述考虑,本综述旨在对氢溢出现象的基本机制进行全面总结,尤其侧重于实验研究中提出的证据。在对基本机制和支持性证据进行全面研究之后,讨论将转向如何从战略上增强氢溢出效应,以优化 HER 的整体性能。最后,讨论了这一研究领域面临的机遇和挑战,并概述了潜在的未来研究方向。这篇综述不仅加深了人们对氢冷反应过程中如何发生氢溢出效应的理解,还为创造新型高效催化剂提供了宝贵的理论见解和实践策略。
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来源期刊
Coordination Chemistry Reviews
Coordination Chemistry Reviews 化学-无机化学与核化学
CiteScore
34.30
自引率
5.30%
发文量
457
审稿时长
54 days
期刊介绍: Coordination Chemistry Reviews offers rapid publication of review articles on current and significant topics in coordination chemistry, encompassing organometallic, supramolecular, theoretical, and bioinorganic chemistry. It also covers catalysis, materials chemistry, and metal-organic frameworks from a coordination chemistry perspective. Reviews summarize recent developments or discuss specific techniques, welcoming contributions from both established and emerging researchers. The journal releases special issues on timely subjects, including those featuring contributions from specific regions or conferences. Occasional full-length book articles are also featured. Additionally, special volumes cover annual reviews of main group chemistry, transition metal group chemistry, and organometallic chemistry. These comprehensive reviews are vital resources for those engaged in coordination chemistry, further establishing Coordination Chemistry Reviews as a hub for insightful surveys in inorganic and physical inorganic chemistry.
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