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Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution

Electrochemical deposition is a facile strategy to prepare functional materials but suffers from limitation in thin films and uncontrollable interface engineering. Here we report a universal electrosynthesis of metal hydroxides/oxides on varied substrates via reduction of oxyacid anions. On graphiti...

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Autores principales: Yan, Zhenhua, Sun, Hongming, Chen, Xiang, Liu, Huanhuan, Zhao, Yaran, Li, Haixia, Xie, Wei, Cheng, Fangyi, Chen, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6006371/
https://www.ncbi.nlm.nih.gov/pubmed/29915288
http://dx.doi.org/10.1038/s41467-018-04788-3
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author Yan, Zhenhua
Sun, Hongming
Chen, Xiang
Liu, Huanhuan
Zhao, Yaran
Li, Haixia
Xie, Wei
Cheng, Fangyi
Chen, Jun
author_facet Yan, Zhenhua
Sun, Hongming
Chen, Xiang
Liu, Huanhuan
Zhao, Yaran
Li, Haixia
Xie, Wei
Cheng, Fangyi
Chen, Jun
author_sort Yan, Zhenhua
collection PubMed
description Electrochemical deposition is a facile strategy to prepare functional materials but suffers from limitation in thin films and uncontrollable interface engineering. Here we report a universal electrosynthesis of metal hydroxides/oxides on varied substrates via reduction of oxyacid anions. On graphitic substrates, we find that the insertion of nitrate ion in graphene layers significantly enhances the electrodeposit–support interface, resulting in high mass loading and super hydrophilic/aerophobic properties. For the electrocatalytic oxygen evolution reaction, the nanocrystalline cerium dioxide and amorphous nickel hydroxide co-electrodeposited on graphite exhibits low overpotential (177 mV@10 mA cm(−2)) and sustains long-term durability (over 300 h) at a large current density of 1000 mA cm(−2). In situ Raman and operando X-ray diffraction unravel that the integration of cerium promotes the formation of electrocatalytically active gamma-phase nickel oxyhydroxide with exposed (003) facets. Therefore, combining anion intercalation with cathodic electrodeposition allows building robust electrodes with high electrochemical performance.
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spelling pubmed-60063712018-06-20 Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution Yan, Zhenhua Sun, Hongming Chen, Xiang Liu, Huanhuan Zhao, Yaran Li, Haixia Xie, Wei Cheng, Fangyi Chen, Jun Nat Commun Article Electrochemical deposition is a facile strategy to prepare functional materials but suffers from limitation in thin films and uncontrollable interface engineering. Here we report a universal electrosynthesis of metal hydroxides/oxides on varied substrates via reduction of oxyacid anions. On graphitic substrates, we find that the insertion of nitrate ion in graphene layers significantly enhances the electrodeposit–support interface, resulting in high mass loading and super hydrophilic/aerophobic properties. For the electrocatalytic oxygen evolution reaction, the nanocrystalline cerium dioxide and amorphous nickel hydroxide co-electrodeposited on graphite exhibits low overpotential (177 mV@10 mA cm(−2)) and sustains long-term durability (over 300 h) at a large current density of 1000 mA cm(−2). In situ Raman and operando X-ray diffraction unravel that the integration of cerium promotes the formation of electrocatalytically active gamma-phase nickel oxyhydroxide with exposed (003) facets. Therefore, combining anion intercalation with cathodic electrodeposition allows building robust electrodes with high electrochemical performance. Nature Publishing Group UK 2018-06-18 /pmc/articles/PMC6006371/ /pubmed/29915288 http://dx.doi.org/10.1038/s41467-018-04788-3 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Yan, Zhenhua
Sun, Hongming
Chen, Xiang
Liu, Huanhuan
Zhao, Yaran
Li, Haixia
Xie, Wei
Cheng, Fangyi
Chen, Jun
Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title_full Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title_fullStr Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title_full_unstemmed Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title_short Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
title_sort anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6006371/
https://www.ncbi.nlm.nih.gov/pubmed/29915288
http://dx.doi.org/10.1038/s41467-018-04788-3
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