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Article: High‐Valence Oxides for High Performance Oxygen Evolution Electrocatalysis

TitleHigh‐Valence Oxides for High Performance Oxygen Evolution Electrocatalysis
Authors
Keywordselectrocatalysis
high-valence oxides
oxygen evolution reaction
valence tuning
Issue Date30-May-2023
PublisherWiley Open Access
Citation
Advanced Science, 2023, v. 10, n. 22 How to Cite?
Abstract

Valence tuning of transition metal oxides is an effective approach to design high-performance catalysts, particularly for the oxygen evolution reaction (OER) that underpins solar/electric water splitting and metal-air batteries. Recently, high-valence oxides (HVOs) are reported to show superior OER performance, in association with the fundamental dynamics of charge transfer and the evolution of the intermediates. Particularly considered are the adsorbate evolution mechanism (AEM) and the lattice oxygen-mediated mechanism (LOM). High-valence states enhance the OER performance mainly by optimizing the eg-orbital filling, promoting the charge transfer between the metal d band and oxygen p band. Moreover, HVOs usually show an elevated O 2p band, which triggers the lattice oxygen as the redox center and enacts the efficient LOM pathway to break the “scaling” limitation of AEM. In addition, oxygen vacancies, induced by the overall charge-neutrality, also promote the direct oxygen coupling in LOM. However, the synthesis of HVOs suffers from relatively large thermodynamic barrier, which makes their preparation difficult. Hence, the synthesis strategies of the HVOs are discussed to guide further design of the HVO electrocatalysts. Finally, further challenges and perspectives are outlined for potential applications in energy conversion and storage.


Persistent Identifierhttp://hdl.handle.net/10722/337994
ISSN
2023 Impact Factor: 14.3
2023 SCImago Journal Rankings: 3.914
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Hao-
dc.contributor.authorZhai, Tingting-
dc.contributor.authorWu, Yifan-
dc.contributor.authorZhou, Tao-
dc.contributor.authorZhou, Binbin-
dc.contributor.authorShang, Congxiao-
dc.contributor.authorGuo, Zhengxiao-
dc.date.accessioned2024-03-11T10:25:28Z-
dc.date.available2024-03-11T10:25:28Z-
dc.date.issued2023-05-30-
dc.identifier.citationAdvanced Science, 2023, v. 10, n. 22-
dc.identifier.issn2198-3844-
dc.identifier.urihttp://hdl.handle.net/10722/337994-
dc.description.abstract<p>Valence tuning of transition metal oxides is an effective approach to design high-performance catalysts, particularly for the oxygen evolution reaction (OER) that underpins solar/electric water splitting and metal-air batteries. Recently, high-valence oxides (HVOs) are reported to show superior OER performance, in association with the fundamental dynamics of charge transfer and the evolution of the intermediates. Particularly considered are the adsorbate evolution mechanism (AEM) and the lattice oxygen-mediated mechanism (LOM). High-valence states enhance the OER performance mainly by optimizing the <em>e</em><sub>g</sub>-orbital filling, promoting the charge transfer between the metal d band and oxygen p band. Moreover, HVOs usually show an elevated O 2p band, which triggers the lattice oxygen as the redox center and enacts the efficient LOM pathway to break the “scaling” limitation of AEM. In addition, oxygen vacancies, induced by the overall charge-neutrality, also promote the direct oxygen coupling in LOM. However, the synthesis of HVOs suffers from relatively large thermodynamic barrier, which makes their preparation difficult. Hence, the synthesis strategies of the HVOs are discussed to guide further design of the HVO electrocatalysts. Finally, further challenges and perspectives are outlined for potential applications in energy conversion and storage.<br></p>-
dc.languageeng-
dc.publisherWiley Open Access-
dc.relation.ispartofAdvanced Science-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectelectrocatalysis-
dc.subjecthigh-valence oxides-
dc.subjectoxygen evolution reaction-
dc.subjectvalence tuning-
dc.titleHigh‐Valence Oxides for High Performance Oxygen Evolution Electrocatalysis-
dc.typeArticle-
dc.identifier.doi10.1002/advs.202301706-
dc.identifier.scopuseid_2-s2.0-85160597068-
dc.identifier.volume10-
dc.identifier.issue22-
dc.identifier.eissn2198-3844-
dc.identifier.isiWOS:000997664400001-
dc.identifier.issnl2198-3844-

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