Lattice oxygen redox chemistry in solid-state electrocatalysts for water oxidation

Fundamental understanding of oxygen evolution reaction (OER) is of vital importance as it dominates the overall efficiency of water electrolysis - a compelling technique for sustainable production of hydrogen feedstock. Recently, a lattice oxygen-mediated mechanism (LOM) derived from lattice oxygen...

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Bibliographic Details
Published inEnergy & environmental science Vol. 14; no. 9; pp. 4647 - 4671
Main Authors Zhang, Ning, Chai, Yang
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 15.09.2021
Subjects
Aquatic plants
Catalysts
Chemistry
Electrocatalysts
Electrolysis
Electronic structure
Hydrogen production
Oxidation
Oxygen
Oxygen evolution reactions
Solid state
Sustainable production
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Summary:Fundamental understanding of oxygen evolution reaction (OER) is of vital importance as it dominates the overall efficiency of water electrolysis - a compelling technique for sustainable production of hydrogen feedstock. Recently, a lattice oxygen-mediated mechanism (LOM) derived from lattice oxygen redox chemistry has received a lot of attention as it can rationalize the highly intrinsic activity and surface reconstruction issue in solid-state electrocatalyst alternatives with high metal-oxygen covalency. The physicochemical fundamentals of LOM further guide the exploration of efficient OER electrocatalysts. In this review, we comprehensively summarize the recent progress in lattice oxygen redox chemistry in solid-state OER electrocatalysts and its induced LOM. We begin with a brief introduction of LOM together with proposed pathways, and discuss the fundamental correlations between electronic structure of catalysts and OER mechanism to provide several electronic descriptors. Subsequently, we summarize the strategies for triggering lattice oxygen redox chemistry to promote the intrinsic OER activity, together with the theoretical calculations and experimental measurements for corroboration of lattice oxygen oxidation. Finally, we offer an outlook of the remaining challenges and future perspectives towards lattice oxygen redox chemistry in OER electrocatalysts. We anticipate that this review can inspire researchers to develop this attractive research area together. Lattice oxygen redox chemistry in solid-state electrocatalysts rationalizes the remarkable OER activity by lattice oxygen-mediated mechanism. Here we elucidate the fundamental principle of this mechanism and summarize recently related developments.
Bibliography:Ning Zhang received his BS in chemistry in 2013 and PhD in inorganic chemistry with Professor Yujie Xiong in 2018, both from the University of Science and Technology of China. He is currently a postdoctoral fellow in Professor Yang Chai's research group at Hong Kong Polytechnic University. His research interests focus on the fundamental solid-state materials for electrochemical and photochemical energy conversion applications.
Yang Chai received his PhD degree from the Hong Kong University of Science and Technology in 2009. He joined the Department of Applied Physics of the Hong Kong Polytechnic University in 2012, and currently is an associate professor. He is a member of the Hong Kong Young Academy of Sciences, and Vice President of Physical Society of Hong Kong. His research interests involve low-dimensional functional nanomaterials for energy and electronics applications.
ISSN:1754-5692
1754-5706
DOI:10.1039/d1ee01277k