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Single-metal-atom catalysts: An emerging platform for electrocatalytic oxygen reduction
Chemical Engineering Journal ( IF 15.1 ) Pub Date : 2020-09-24 , DOI: 10.1016/j.cej.2020.127135
Yong Wang , Fei-Long Hu , Yan Mi , Cheng Yan , Shenlong Zhao

Electrochemical oxygen reduction reaction (ORR) is at the heart in many sustainable energy conversion technologies such as rechargeable fuel cells and metal-air batteries. Currently, various noble/transition metal-based materials have been developed as catalysts for boosting their catalytic performances. Among them, single-atom catalysts (SACs) have received increasing interest as promising electrocatalysts owing to their maximum utilization of active species, low-coordination environment, quantum size effect and tunable metal-support interaction. Over the past few years, tremendous SACs have been fabricated by using various approaches and are further used for the advanced energy conversion process. In this review, we offer a critical overview on the state-of-the-art design of SACs under the framework of bottom-up and top-down strategies and in-situ/operando characterizations. We also comprehensively present recent advances in the development of SACs for ORR electrocatalysis, fuel cells and zinc-air batteries, and describe key challenges and future opportunities in this emerging field.



中文翻译:

单金属原子催化剂:用于电催化氧还原的新兴平台

电化学氧还原反应(ORR)是许多可持续能源转换技术的核心,例如可充电燃料电池和金属空气电池。当前,已经开发了各种贵金属/过渡金属基材料作为催化剂以提高其催化性能。其中,由于单原子催化剂(SAC)最大限度地利用了活性物种,低配位环境,量子尺寸效应和可调节的金属与载体之间的相互作用,因此作为有前途的电催化剂受到了越来越多的关注。在过去的几年中,已经通过使用各种方法制造出了巨大的SAC,并进一步用于先进的能量转换过程。在这篇评论中 在自下而上和自上而下的策略以及原位/操作数表征的框架下,我们对SAC的最新设计提供了重要的概述。我们还全面介绍了用于ORR电催化,燃料电池和锌空气电池的SAC的最新进展,并描述了这一新兴领域的关键挑战和未来机遇。

更新日期:2020-10-08
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