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Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting

Development of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets...

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Autores principales: Ji, Xixi, Lin, Yanhong, Zeng, Jie, Ren, Zhonghua, Lin, Zijia, Mu, Yongbiao, Qiu, Yejun, Yu, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7925597/
https://www.ncbi.nlm.nih.gov/pubmed/33654075
http://dx.doi.org/10.1038/s41467-021-21742-y
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author Ji, Xixi
Lin, Yanhong
Zeng, Jie
Ren, Zhonghua
Lin, Zijia
Mu, Yongbiao
Qiu, Yejun
Yu, Jie
author_facet Ji, Xixi
Lin, Yanhong
Zeng, Jie
Ren, Zhonghua
Lin, Zijia
Mu, Yongbiao
Qiu, Yejun
Yu, Jie
author_sort Ji, Xixi
collection PubMed
description Development of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS(2) nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)(x)) are successively grown on carbon fibers (CF/VGSs/MoS(2)/FeCoNi(OH)(x)). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm(−2) and small Tafel slope of 29.2 mV dec(−1). Theoretical calculation indicates that compositing of FeCoNi(OH)(x) with MoS(2) could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS(2)/FeCoNi(OH)(x) anode for overall water splitting, which generates a current density of 100 mA cm(−2) at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis.
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spelling pubmed-79255972021-03-21 Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting Ji, Xixi Lin, Yanhong Zeng, Jie Ren, Zhonghua Lin, Zijia Mu, Yongbiao Qiu, Yejun Yu, Jie Nat Commun Article Development of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS(2) nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)(x)) are successively grown on carbon fibers (CF/VGSs/MoS(2)/FeCoNi(OH)(x)). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm(−2) and small Tafel slope of 29.2 mV dec(−1). Theoretical calculation indicates that compositing of FeCoNi(OH)(x) with MoS(2) could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS(2)/FeCoNi(OH)(x) anode for overall water splitting, which generates a current density of 100 mA cm(−2) at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis. Nature Publishing Group UK 2021-03-02 /pmc/articles/PMC7925597/ /pubmed/33654075 http://dx.doi.org/10.1038/s41467-021-21742-y Text en © The Author(s) 2021 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
Ji, Xixi
Lin, Yanhong
Zeng, Jie
Ren, Zhonghua
Lin, Zijia
Mu, Yongbiao
Qiu, Yejun
Yu, Jie
Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title_full Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title_fullStr Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title_full_unstemmed Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title_short Graphene/MoS(2)/FeCoNi(OH)(x) and Graphene/MoS(2)/FeCoNiP(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
title_sort graphene/mos(2)/feconi(oh)(x) and graphene/mos(2)/feconip(x) multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7925597/
https://www.ncbi.nlm.nih.gov/pubmed/33654075
http://dx.doi.org/10.1038/s41467-021-21742-y
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