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Type: Journal article
Title: High-efficiency electrosynthesis of hydrogen peroxide from oxygen reduction enabled by a tungsten single atom catalyst with unique terdentate N₁O₂ coordination
Other Titles: High-efficiency electrosynthesis of hydrogen peroxide from oxygen reduction enabled by a tungsten single atom catalyst with unique terdentate N(1)O(2) coordination
Author: Zhang, F.
Zhu, Y.
Tang, C.
Chen, Y.
Qian, B.
Hu, Z.
Chang, Y.C.
Pao, C.W.
Lin, Q.
Kazemi, S.A.
Wang, Y.
Zhang, L.
Zhang, X.
Wang, H.
Citation: Advanced Functional Materials, 2022; 32(16):2110224-1-2110224-8
Publisher: Wiley
Issue Date: 2022
ISSN: 1616-301X
Statement of
Feifei Zhang, Yinlong Zhu, Cheng Tang, Yu Chen, Binbin Qian, Zhiwei Hu, Yu-Chung Chang, Chih-Wen Pao, Qian Lin, Seyedeh Alieh Kazemi, Yun Wang, Lian Zhang, Xiwang Zhang, and Huanting Wang
Abstract: Single-atom catalysts (SACs) have shown great potential in the electrochemical oxygen reduction reaction (ORR) toward hydrogen peroxide (H2O2) production. However, current studies are mainly focused on 3d transition-metal SACs, and very little attention has been paid to 5d SACs. Here, a new kind of W SAC anchored on a porous O, N-doped carbon nanosheet (W1/NO-C) is designed and prepared via a simple coordination polymer-pyrolysis method. A unique local structure of W SAC, terdentate W1N1O2 with the coordination of two O atoms and one N atom, is identified by the combination of aberration-corrected scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy. Remarkably, the as-prepared W1/NO-C catalyzes the ORR via a 2e– pathway with high onset potential, high H2O2 selectivity in the wide potential range, and excellent operation durability in 0.1 m KOH solution, superior to most of state-of-the-art H2O2 electrocatalysts ever reported. Theoretical calculations reveal that the C atoms adjacent to O in the W1N1O2-C moiety are the most active sites for the 2e– ORR to H2O2 with the optimal binding energy of the HOO* intermediate. This work opens up a new opportunity for the development of high-performance W-based catalysts for electrochemical H2O2 production.
Description: First published: 31 December 2021
Rights: © 2021 Wiley-VCH GmbH
DOI: 10.1002/adfm.202110224
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Appears in Collections:Chemical Engineering publications

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