Constructing an Adaptive Heterojunction as a Highly Active Catalyst for the Oxygen Evolution Reaction

Constructing an Adaptive Heterojunction as a Highly Active Catalyst for the Oxygen Evolution Reaction

© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 32(2020), 30 vom: 03. Juli, Seite e2001292
1. Verfasser: Ren, Xiao (VerfasserIn)
Weitere Verfasser: Wei, Chao, Sun, Yuanmiao, Liu, Xiaozhi, Meng, Fanqi, Meng, Xiaoxia, Sun, Shengnan, Xi, Shibo, Du, Yonghua, Bi, Zhuanfang, Shang, Guangyi, Fisher, Adrian C, Gu, Lin, Xu, Zhichuan J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article adaptive junctions cycling delithiation oxygen evolution reconstruction
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520 |a Electrochemical water splitting is of prime importance to green energy technology. Particularly, the reaction at the anode side, namely the oxygen evolution reaction (OER), requires a high overpotential associated with OO bond formation, which dominates the energy-efficiency of the whole process. Activating the anionic redox chemistry of oxygen in metal oxides, which involves the formation of superoxo/peroxo-like (O2 )n - , commonly occurs in most highly active catalysts during the OER process. In this study, a highly active catalyst is designed: electrochemically delithiated LiNiO2 , which facilitates the formation of superoxo/peroxo-like (O2 )n - species, i.e., NiOO*, for enhancing OER activity. The OER-induced surface reconstruction builds an adaptive heterojunction, where NiOOH grows on delithiated LiNiO2 (delithiated-LiNiO2 /NiOOH). At this junction, the lithium vacancies within the delithiated LiNiO2 optimize the electronic structure of the surface NiOOH to form stable NiOO* species, which enables better OER activity. This finding provides new insight for designing highly active catalysts with stable superoxo-like/peroxo-like (O2 )n - for water oxidation 
650 4 |a Journal Article 
650 4 |a adaptive junctions 
650 4 |a cycling 
650 4 |a delithiation 
650 4 |a oxygen evolution 
650 4 |a reconstruction 
700 1 |a Wei, Chao  |e verfasserin  |4 aut 
700 1 |a Sun, Yuanmiao  |e verfasserin  |4 aut 
700 1 |a Liu, Xiaozhi  |e verfasserin  |4 aut 
700 1 |a Meng, Fanqi  |e verfasserin  |4 aut 
700 1 |a Meng, Xiaoxia  |e verfasserin  |4 aut 
700 1 |a Sun, Shengnan  |e verfasserin  |4 aut 
700 1 |a Xi, Shibo  |e verfasserin  |4 aut 
700 1 |a Du, Yonghua  |e verfasserin  |4 aut 
700 1 |a Bi, Zhuanfang  |e verfasserin  |4 aut 
700 1 |a Shang, Guangyi  |e verfasserin  |4 aut 
700 1 |a Fisher, Adrian C  |e verfasserin  |4 aut 
700 1 |a Gu, Lin  |e verfasserin  |4 aut 
700 1 |a Xu, Zhichuan J  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 32(2020), 30 vom: 03. Juli, Seite e2001292  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:32  |g year:2020  |g number:30  |g day:03  |g month:07  |g pages:e2001292 
856 4 0 |u http://dx.doi.org/10.1002/adma.202001292  |3 Volltext 
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