Constructing three-dimensional porous Ni/Ni3S2 nano-interfaces for hydrogen evolution electrocatalysis under alkaline conditions

Yiming An; Bolong Huang; Zilong Wang; Xia Long; Yongcai Qiu; Jue Hu; Dan Zhou; He Lin; Shihe Yang

doi:10.1039/c7dt00878c

Constructing three-dimensional porous Ni/Ni₃S₂ nano-interfaces for hydrogen evolution electrocatalysis under alkaline conditions

Yiming An, Bolong Huang^*, Zilong Wang, Xia Long, Yongcai Qiu, Jue Hu, Dan Zhou, He Lin, Shihe Yang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

48 Citations (Scopus)

Abstract

It is still a challenging issue to design earth-abundant electrocatalysts with low cost, high activity and long-term stability for the hydrogen evolution reaction (HER) based on water splitting in alkaline solutions. Here, we report a facile synthetic route for a three-dimensional, porous Ni/Ni₃S₂ nano-network on carbon cloth for the efficient catalysis of HER. This unique structure exposes a high proportion of Ni/Ni₃S₂ hetero-interfaces to the electrolyte, creating a synergetic effect between Ni and Ni₃S₂ that enhances HER. The synergetic effect at the interface was verified by DFT calculation and involves the interface-assisted heterolytic splitting of H₂O into OH^- and H⁺ and the subsequent expeditious H₂-forming reaction caused by weakened binding between Ni and H induced by the neighboring Ni₃S₂. The resulting porous network shows high HER activity in alkaline media, reaching 10 mA cm^-2 at 95 mV with a Tafel slope of 66 mV dec^-1. This value is much smaller than that of nickel metal, which is currently used in industry. © 2017 The Royal Society of Chemistry.

Original language	English
Pages (from-to)	10700-10706
Journal	Dalton Transactions
Volume	46
Issue number	32
DOIs	https://doi.org/10.1039/c7dt00878c
Publication status	Published - 2017
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the Hong Kong Research Grants Council (N_HKUST610/14 and GRF No. 16300915).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

RGC Funding Information

RGC-funded

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Cite this

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title = "Constructing three-dimensional porous Ni/Ni3S2 nano-interfaces for hydrogen evolution electrocatalysis under alkaline conditions",

abstract = "It is still a challenging issue to design earth-abundant electrocatalysts with low cost, high activity and long-term stability for the hydrogen evolution reaction (HER) based on water splitting in alkaline solutions. Here, we report a facile synthetic route for a three-dimensional, porous Ni/Ni3S2 nano-network on carbon cloth for the efficient catalysis of HER. This unique structure exposes a high proportion of Ni/Ni3S2 hetero-interfaces to the electrolyte, creating a synergetic effect between Ni and Ni3S2 that enhances HER. The synergetic effect at the interface was verified by DFT calculation and involves the interface-assisted heterolytic splitting of H2O into OH- and H+ and the subsequent expeditious H2-forming reaction caused by weakened binding between Ni and H induced by the neighboring Ni3S2. The resulting porous network shows high HER activity in alkaline media, reaching 10 mA cm-2 at 95 mV with a Tafel slope of 66 mV dec-1. This value is much smaller than that of nickel metal, which is currently used in industry. {\textcopyright} 2017 The Royal Society of Chemistry.",

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T1 - Constructing three-dimensional porous Ni/Ni3S2 nano-interfaces for hydrogen evolution electrocatalysis under alkaline conditions

AU - An, Yiming

AU - Huang, Bolong

AU - Wang, Zilong

AU - Long, Xia

AU - Qiu, Yongcai

AU - Hu, Jue

AU - Zhou, Dan

AU - Lin, He

AU - Yang, Shihe

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2017

Y1 - 2017

N2 - It is still a challenging issue to design earth-abundant electrocatalysts with low cost, high activity and long-term stability for the hydrogen evolution reaction (HER) based on water splitting in alkaline solutions. Here, we report a facile synthetic route for a three-dimensional, porous Ni/Ni3S2 nano-network on carbon cloth for the efficient catalysis of HER. This unique structure exposes a high proportion of Ni/Ni3S2 hetero-interfaces to the electrolyte, creating a synergetic effect between Ni and Ni3S2 that enhances HER. The synergetic effect at the interface was verified by DFT calculation and involves the interface-assisted heterolytic splitting of H2O into OH- and H+ and the subsequent expeditious H2-forming reaction caused by weakened binding between Ni and H induced by the neighboring Ni3S2. The resulting porous network shows high HER activity in alkaline media, reaching 10 mA cm-2 at 95 mV with a Tafel slope of 66 mV dec-1. This value is much smaller than that of nickel metal, which is currently used in industry. © 2017 The Royal Society of Chemistry.

AB - It is still a challenging issue to design earth-abundant electrocatalysts with low cost, high activity and long-term stability for the hydrogen evolution reaction (HER) based on water splitting in alkaline solutions. Here, we report a facile synthetic route for a three-dimensional, porous Ni/Ni3S2 nano-network on carbon cloth for the efficient catalysis of HER. This unique structure exposes a high proportion of Ni/Ni3S2 hetero-interfaces to the electrolyte, creating a synergetic effect between Ni and Ni3S2 that enhances HER. The synergetic effect at the interface was verified by DFT calculation and involves the interface-assisted heterolytic splitting of H2O into OH- and H+ and the subsequent expeditious H2-forming reaction caused by weakened binding between Ni and H induced by the neighboring Ni3S2. The resulting porous network shows high HER activity in alkaline media, reaching 10 mA cm-2 at 95 mV with a Tafel slope of 66 mV dec-1. This value is much smaller than that of nickel metal, which is currently used in industry. © 2017 The Royal Society of Chemistry.

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