Supported and coordinated single metal site electrocatalysts
Supported and coordinated single metal site electrocatalysts
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DOI：
10.1016/j.mattod.2020.02.019
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发表时间：
2020-07-01
期刊：
影响因子：
24.2
通讯作者：
Wu, Gang
中科院分区：
文献类型：
--
作者：
Shi, Qiurong;Hwang, Sooyeon;Wu, Gang
日益严重的全球环境和能源危机问题需要技术创新，特别是在可再生能源相关设备的开发方面，例如电化学能量转换和存储技术，包括燃料电池，水电解槽和CO2电解槽。可靠和可持续的能量转换装置高度依赖于电催化剂的工程设计。用于这些电化学转化系统的现有技术的电催化剂通常是具有高成本的基于铂族金属（PGM）的纳米颗粒，这引发了对原子分散的单金属位点电催化剂的深入研究，用于通过利用其固有的电子效应、量子尺寸效应和金属-载体相互作用来降低金属负载并提高催化效率。在这篇综述中，我们首先介绍了原子分散的单金属位点电催化剂的概念，包括突出其关键性能和合成策略，其次讨论了相互的金属-载体相互作用，最重要的是，这些因素如何与催化性能相关。其次，重点介绍了单金属中心电催化剂的合成策略和表征技术的进展。介绍了单金属中心电催化剂在电化学转化反应中的应用。最后，仍然存在的挑战和前瞻性的观点，这一领域的研究。
The ever-increasing global environmental and energy crisis issues necessitate technological innovation, especially in the development of renewable energy-related devices, such as electrochemical energy conversion and storage technologies, including fuel cells, water electrolyzers, and CO2 electrolyzers. Reliable and sustainable energy conversion devices are highly dependent on engineering of electrocatalysts. State-of-the-art electrocatalysts for these electrochemical conversion systems are usually platinum group metal (PGM)-based nanoparticles with high cost, which has sparked intensive research on atomically dispersed single metal site electrocatalysts for decreasing metal loadings and boosting catalytic efficiencies by taking advantage of their inherent electronic effects, quantum size effects, and metal-support interactions. In this review, we first introduce the concept of atomically dispersed single metal site electrocatalysts, including highlighting their key properties and synthesis strategies, followed by a discussion of the mutual metal-support interactions, and most importantly, how these factors correlate with catalytic properties. Next, the advances in synthetic strategies and characterization techniques for single metal site electrocatalysts are highlighted. Recent advances in single metal site electrocatalysts designs for applications in electrochemical conversion reactions are also presented. Finally, remaining challenges and a forward-looking perspective on this field of research are provided.