Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis

High‐performance water‐splitting electrocatalysts are needed by the energy sector for sustainable hydrogen production. Herein, it is demonstrated that the surface decoration of a nickel foam (NF) with porous Ni/Ni3S2 microsheets yields an electrode with high electrical conductivity and an abundance...

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Autores principales:	Lishan Peng, Chao Wang, Qing Wang, Run Shi, Tierui Zhang, Geoffrey I. N. Waterhouse
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	bifunctional catalysts heterostructured catalysts interface engineering Ni–Ni3S2 overall water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
Acceso en línea:	https://doaj.org/article/9aa3baddecf74eebae19f7fc2d465d4a
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spelling	oai:doaj.org-article:9aa3baddecf74eebae19f7fc2d465d4a2021-11-04T09:03:08ZRationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis2699-941210.1002/aesr.202100078https://doaj.org/article/9aa3baddecf74eebae19f7fc2d465d4a2021-11-01T00:00:00Zhttps://doi.org/10.1002/aesr.202100078https://doaj.org/toc/2699-9412High‐performance water‐splitting electrocatalysts are needed by the energy sector for sustainable hydrogen production. Herein, it is demonstrated that the surface decoration of a nickel foam (NF) with porous Ni/Ni3S2 microsheets yields an electrode with high electrical conductivity and an abundance of accessible Ni0–Ni3S2 interfaces as active sites for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In 1 m potassium hydroxide, Ni–Ni3S2/NF exhibits outstanding HER activity (an overpotential of 57 mV at a current density of 10 mA cm−2) and similarly impressive OER activity (a low overpotential of only 295 mV at a current density of 20 mA cm−2). A water electrolyzer constructed using Ni–Ni3S2/NF as the HER and OER electrodes exhibits a low cell voltage of only 1.57 V with no obvious performance loss over 30 h, outperforming devices based on expensive Pt/C and RuO2 catalysts. To the best of the author's knowledge, Ni–Ni3S2/NF is one of the best non‐precious metal electrocatalysts reported to date for overall water splitting.Lishan PengChao WangQing WangRun ShiTierui ZhangGeoffrey I. N. WaterhouseWiley-VCHarticlebifunctional catalystsheterostructured catalystsinterface engineeringNi–Ni3S2overall water electrolysisEnvironmental 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	bifunctional catalysts heterostructured catalysts interface engineering Ni–Ni3S2 overall water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
spellingShingle	bifunctional catalysts heterostructured catalysts interface engineering Ni–Ni3S2 overall water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830 Lishan Peng Chao Wang Qing Wang Run Shi Tierui Zhang Geoffrey I. N. Waterhouse Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
description	High‐performance water‐splitting electrocatalysts are needed by the energy sector for sustainable hydrogen production. Herein, it is demonstrated that the surface decoration of a nickel foam (NF) with porous Ni/Ni3S2 microsheets yields an electrode with high electrical conductivity and an abundance of accessible Ni0–Ni3S2 interfaces as active sites for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In 1 m potassium hydroxide, Ni–Ni3S2/NF exhibits outstanding HER activity (an overpotential of 57 mV at a current density of 10 mA cm−2) and similarly impressive OER activity (a low overpotential of only 295 mV at a current density of 20 mA cm−2). A water electrolyzer constructed using Ni–Ni3S2/NF as the HER and OER electrodes exhibits a low cell voltage of only 1.57 V with no obvious performance loss over 30 h, outperforming devices based on expensive Pt/C and RuO2 catalysts. To the best of the author's knowledge, Ni–Ni3S2/NF is one of the best non‐precious metal electrocatalysts reported to date for overall water splitting.
format	article
author	Lishan Peng Chao Wang Qing Wang Run Shi Tierui Zhang Geoffrey I. N. Waterhouse
author_facet	Lishan Peng Chao Wang Qing Wang Run Shi Tierui Zhang Geoffrey I. N. Waterhouse
author_sort	Lishan Peng
title	Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
title_short	Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
title_full	Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
title_fullStr	Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
title_full_unstemmed	Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis
title_sort	rationally designed ni–ni3s2 interfaces for efficient overall water electrolysis
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/9aa3baddecf74eebae19f7fc2d465d4a
work_keys_str_mv	AT lishanpeng rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis AT chaowang rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis AT qingwang rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis AT runshi rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis AT tieruizhang rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis AT geoffreyinwaterhouse rationallydesignednini3s2interfacesforefficientoverallwaterelectrolysis
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Rationally Designed Ni–Ni3S2 Interfaces for Efficient Overall Water Electrolysis

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