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Issue 84, 2020
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Single-atom catalysts for the oxygen evolution reaction: recent developments and future perspectives

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Abstract

Single-atom catalysts (SACs) possess the potential to achieve unique catalytic properties and remarkable catalytic mass activity by utilizing low-coordination and unsaturated active sites. However, smaller particles tend to aggregate into clusters or particles owing to their high surface energy. In addition, support materials that have strong interactions with isolated metal atoms, extremely large surface areas, and electrochemical stability are required. Therefore, sufficient information about these factors is needed to synthesize and utilize SACs. Herein, we review the recent investigations and advances in SACs for the oxygen evolution reaction (OER). We present not only the structural characterization of SACs, but also in situ/operando spectroscopic techniques and computational research for SACs to understand the mechanism and reveal the origin of their excellent OER activity. Furthermore, the OER catalytic activity and stability of SACs are summarized to evaluate the current level of SACs. Currently, research on single-atoms as OER catalysts is in the infant stage for synthesis, characterization and mechanism studies. We discuss some challenges for understanding the fundamentals of SACs and enhancing the catalytic performance of SACs for industrial applications.

Graphical abstract: Single-atom catalysts for the oxygen evolution reaction: recent developments and future perspectives

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Article information


Submitted
09 Jul 2020
Accepted
27 Aug 2020
First published
27 Aug 2020

Chem. Commun., 2020,56, 12687-12697
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Single-atom catalysts for the oxygen evolution reaction: recent developments and future perspectives

W. H. Lee, Y. Ko, J. Kim, B. K. Min, Y. J. Hwang and H. Oh, Chem. Commun., 2020, 56, 12687
DOI: 10.1039/D0CC04752J

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