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Layered double hydroxide-based electrocatalysts for the oxygen evolution reaction: identification and tailoring of active sites, and superaerophobic nanoarray electrode assembly

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journal contribution
posted on 28.06.2021, 09:57 by Daojin Zhou, Pengsong Li, Xiao Lin, Adam MckinleyAdam Mckinley, Yun Kuang, Wen Liu, Wen-Feng LinWen-Feng Lin, Xiaoming Sun, Xue Duan

The electrocatalytic oxygen evolution reaction (OER) is a critical half-cell reaction for hydrogen production via water electrolysis. However, the practical OER suffers from sluggish kinetics and thus requires efficient electrocatalysts. Transition metal-based layered double hydroxides (LDHs) represent one of the most active classes of OER catalysts. An in-depth understanding of the activity of LDH based electrocatalysts can promote further rational design and active site regulation of high-performance electrocatalysts. In this review, the fundamental understanding of the structural characteristics of LDHs is demonstrated first, then comparisons and in-depth discussions of recent advances in LDHs as highly active OER catalysts in alkaline media are offered, which include both experimental and computational methods. On top of the active site identification and structural characterization of LDHs on an atomic scale, strategies to promote the OER activity are summarised, including doping, intercalation and defect-making. Furthermore, the concept of superaerophobicity, which has a profound impact on the performance of gas evolution electrodes, is explored to enhance LDHs and their derivatives for a large scale OER. In addition, certain operating standards for OER measurements are proposed to avoid inconsistency in evaluating the OER activity of LDHs. Finally, several key challenges in using LDHs as anode materials for large scale water splitting, such as the issue of stability and the adoption of membrane–electrode-assembly based electrolysers, are emphasized to shed light on future research directions.

Funding

National Natural Science Foundation of China (NSFC)

Royal Society and the Newton Fund through the Newton Advanced Fellowship award (NAF\R1\191294)

DTP 2018-19 University of Cambridge

Engineering and Physical Sciences Research Council

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EPSRC Centre for Doctoral Training in Sustainable Hydrogen - SusHy

Engineering and Physical Sciences Research Council

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Program for Changjiang Scholars and Innovation Research Team in the University (No. IRT1205)

Fundamental Research Funds for the Central Universities

Ministry of Finance and the Ministry of Education of PRC

Beijing University of Chemical Technology (BUCTRC202025)

China Postdoctoral Science Foundation (2020M670107)

Natural Science Foundation of Beijing, China (2214062)

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Chemical Society Reviews

Volume

50

Issue

15

Pages

8790-8817

Publisher

Royal Society of Chemistry (RSC)

Version

VoR (Version of Record)

Rights holder

Journal is © The Royal Society of Chemistry

Publisher statement

This is an Open Access Article. It is published by the Royal Society of Chemistry under the Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/3.0/

Publication date

2021-06-23

Copyright date

2021

ISSN

0306-0012

eISSN

1460-4744

Language

en

Depositor

Prof Wen Feng Lin. Deposit date: 23 June 2021