NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media

Herein a facile synthesis methodology is reported that results in a unique 3D NiSe@Ni1−xFexSe2 core–shell nanostructure on nickel foam substrate, where Ni1−xFexSe2 nanosheets are fabricated on NiSe nanowires through an iron‐doping‐induced phase transformation process under solvothermal conditions. T...

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Autores principales:	Dmitrii Rakov, Chunyu Sun, Ziang Lu, Siwei Li, Ping Xu
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	electrocatalysts iron doping nickel selenide phase transformation water splitting Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
Acceso en línea:	https://doaj.org/article/b88e598e9294462fb5f419a40b18deda
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spelling	oai:doaj.org-article:b88e598e9294462fb5f419a40b18deda2021-11-04T09:03:08ZNiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media2699-941210.1002/aesr.202100071https://doaj.org/article/b88e598e9294462fb5f419a40b18deda2021-11-01T00:00:00Zhttps://doi.org/10.1002/aesr.202100071https://doaj.org/toc/2699-9412Herein a facile synthesis methodology is reported that results in a unique 3D NiSe@Ni1−xFexSe2 core–shell nanostructure on nickel foam substrate, where Ni1−xFexSe2 nanosheets are fabricated on NiSe nanowires through an iron‐doping‐induced phase transformation process under solvothermal conditions. This material demonstrates stable hydrogen and oxygen evolution activity in 1.0 m KOH with a small overpotential of 153 mV@−10 mA cm−2 and 236 mV@100 mA cm−2, respectively. Furthermore, an efficient and stable water electrolyzer with NiSe@Ni1−xFexSe2/nickel foam as both anode and cathode is fabricated, which requires a low overpotential of 1.60 V to deliver a current density of 10 mA cm−2. Such ion‐doping‐induced phase transformation paves a new way for fabricating highly efficient electrocatalysts for energy storage and conversion.Dmitrii RakovChunyu SunZiang LuSiwei LiPing XuWiley-VCHarticleelectrocatalystsiron dopingnickel selenidephase transformationwater splittingEnvironmental technology. Sanitary engineeringTD1-1066Renewable energy sourcesTJ807-830ENAdvanced Energy & Sustainability Research, Vol 2, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrocatalysts iron doping nickel selenide phase transformation water splitting Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
spellingShingle	electrocatalysts iron doping nickel selenide phase transformation water splitting Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830 Dmitrii Rakov Chunyu Sun Ziang Lu Siwei Li Ping Xu NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
description	Herein a facile synthesis methodology is reported that results in a unique 3D NiSe@Ni1−xFexSe2 core–shell nanostructure on nickel foam substrate, where Ni1−xFexSe2 nanosheets are fabricated on NiSe nanowires through an iron‐doping‐induced phase transformation process under solvothermal conditions. This material demonstrates stable hydrogen and oxygen evolution activity in 1.0 m KOH with a small overpotential of 153 mV@−10 mA cm−2 and 236 mV@100 mA cm−2, respectively. Furthermore, an efficient and stable water electrolyzer with NiSe@Ni1−xFexSe2/nickel foam as both anode and cathode is fabricated, which requires a low overpotential of 1.60 V to deliver a current density of 10 mA cm−2. Such ion‐doping‐induced phase transformation paves a new way for fabricating highly efficient electrocatalysts for energy storage and conversion.
format	article
author	Dmitrii Rakov Chunyu Sun Ziang Lu Siwei Li Ping Xu
author_facet	Dmitrii Rakov Chunyu Sun Ziang Lu Siwei Li Ping Xu
author_sort	Dmitrii Rakov
title	NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
title_short	NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
title_full	NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
title_fullStr	NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
title_full_unstemmed	NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
title_sort	nise@ni1−xfexse2 core–shell nanostructures as a bifunctional water splitting electrocatalyst in alkaline media
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/b88e598e9294462fb5f419a40b18deda
work_keys_str_mv	AT dmitriirakov niseni1xfexse2coreshellnanostructuresasabifunctionalwatersplittingelectrocatalystinalkalinemedia AT chunyusun niseni1xfexse2coreshellnanostructuresasabifunctionalwatersplittingelectrocatalystinalkalinemedia AT zianglu niseni1xfexse2coreshellnanostructuresasabifunctionalwatersplittingelectrocatalystinalkalinemedia AT siweili niseni1xfexse2coreshellnanostructuresasabifunctionalwatersplittingelectrocatalystinalkalinemedia AT pingxu niseni1xfexse2coreshellnanostructuresasabifunctionalwatersplittingelectrocatalystinalkalinemedia
_version_	1718444987886075904

NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media

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