Construction dual-regulated NiCo2S4 @Mo-doped CoFe-LDH for oxygen evolution reaction at large current density

Xueran Shen; Huanjun Li; Yaoyuan Zhang; Tiantian Ma; Qun Li; Qingze Jiao; Yun Zhao; Hansheng Li; Caihong Feng

doi:10.1016/j.apcatb.2022.121917

Construction dual-regulated NiCo₂S₄ @Mo-doped CoFe-LDH for oxygen evolution reaction at large current density

Xueran Shen, Huanjun Li, Yaoyuan Zhang, Tiantian Ma, Qun Li, Qingze Jiao, Yun Zhao, Hansheng Li, Caihong Feng^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

84 Citations (Scopus)

Abstract

Developing efficient and nonprecious large-current-density based oxygen evolution reaction (OER) electrocatalysts is strongly required for sustainable industrial water splitting. Hence, a unique heterostructure erecting by Mo-doped CoFe layered double hydroxides coating NiCo₂S₄ nanotube arrays grown on nickel foam (NCS@CFM-LDH/NF) is elaborately demonstrated. It only needs an overpotential of 295/332 mV to achieve current density of 500/1000 mA cm⁻², respectively, with a low Tafel slope of 83.0 mV dec⁻¹ in alkaline media. NCS@CFM-LDH/NF also shows an ultra-long-term stability at 1000 mA cm⁻² over 100 h. Its remarkable performance is ascribed to the synergic effect of multi-component and hierarchical structure. Additionally, Theoretical calculations disclose that the doping of molybdenum is beneficial to the adsorption of the *O intermediate, thus promotes OER activity. This study provides an attractive approach to design highly active and durable OER catalysts for industrial application in electrolysis of water.

Original language	English
Article number	121917
Journal	Applied Catalysis B: Environmental
Volume	319
DOIs	https://doi.org/10.1016/j.apcatb.2022.121917
Publication status	Published - 15 Dec 2022

Keywords

Electrocatalysis
Heterostructures
NiCoS @CoFeMo-LDH
Oxygen evolution reaction
Water splitting

UN SDGs

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

Access to Document

10.1016/j.apcatb.2022.121917

Cite this

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title = "Construction dual-regulated NiCo2S4 @Mo-doped CoFe-LDH for oxygen evolution reaction at large current density",

abstract = "Developing efficient and nonprecious large-current-density based oxygen evolution reaction (OER) electrocatalysts is strongly required for sustainable industrial water splitting. Hence, a unique heterostructure erecting by Mo-doped CoFe layered double hydroxides coating NiCo2S4 nanotube arrays grown on nickel foam (NCS@CFM-LDH/NF) is elaborately demonstrated. It only needs an overpotential of 295/332 mV to achieve current density of 500/1000 mA cm−2, respectively, with a low Tafel slope of 83.0 mV dec−1 in alkaline media. NCS@CFM-LDH/NF also shows an ultra-long-term stability at 1000 mA cm−2 over 100 h. Its remarkable performance is ascribed to the synergic effect of multi-component and hierarchical structure. Additionally, Theoretical calculations disclose that the doping of molybdenum is beneficial to the adsorption of the *O intermediate, thus promotes OER activity. This study provides an attractive approach to design highly active and durable OER catalysts for industrial application in electrolysis of water.",

keywords = "Electrocatalysis, Heterostructures, NiCoS @CoFeMo-LDH, Oxygen evolution reaction, Water splitting",

author = "Xueran Shen and Huanjun Li and Yaoyuan Zhang and Tiantian Ma and Qun Li and Qingze Jiao and Yun Zhao and Hansheng Li and Caihong Feng",

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AU - Shen, Xueran

AU - Li, Huanjun

AU - Zhang, Yaoyuan

AU - Ma, Tiantian

AU - Li, Qun

AU - Jiao, Qingze

AU - Zhao, Yun

AU - Li, Hansheng

AU - Feng, Caihong

PY - 2022/12/15

Y1 - 2022/12/15

N2 - Developing efficient and nonprecious large-current-density based oxygen evolution reaction (OER) electrocatalysts is strongly required for sustainable industrial water splitting. Hence, a unique heterostructure erecting by Mo-doped CoFe layered double hydroxides coating NiCo2S4 nanotube arrays grown on nickel foam (NCS@CFM-LDH/NF) is elaborately demonstrated. It only needs an overpotential of 295/332 mV to achieve current density of 500/1000 mA cm−2, respectively, with a low Tafel slope of 83.0 mV dec−1 in alkaline media. NCS@CFM-LDH/NF also shows an ultra-long-term stability at 1000 mA cm−2 over 100 h. Its remarkable performance is ascribed to the synergic effect of multi-component and hierarchical structure. Additionally, Theoretical calculations disclose that the doping of molybdenum is beneficial to the adsorption of the *O intermediate, thus promotes OER activity. This study provides an attractive approach to design highly active and durable OER catalysts for industrial application in electrolysis of water.

AB - Developing efficient and nonprecious large-current-density based oxygen evolution reaction (OER) electrocatalysts is strongly required for sustainable industrial water splitting. Hence, a unique heterostructure erecting by Mo-doped CoFe layered double hydroxides coating NiCo2S4 nanotube arrays grown on nickel foam (NCS@CFM-LDH/NF) is elaborately demonstrated. It only needs an overpotential of 295/332 mV to achieve current density of 500/1000 mA cm−2, respectively, with a low Tafel slope of 83.0 mV dec−1 in alkaline media. NCS@CFM-LDH/NF also shows an ultra-long-term stability at 1000 mA cm−2 over 100 h. Its remarkable performance is ascribed to the synergic effect of multi-component and hierarchical structure. Additionally, Theoretical calculations disclose that the doping of molybdenum is beneficial to the adsorption of the *O intermediate, thus promotes OER activity. This study provides an attractive approach to design highly active and durable OER catalysts for industrial application in electrolysis of water.

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KW - Heterostructures

KW - NiCoS @CoFeMo-LDH

KW - Oxygen evolution reaction

KW - Water splitting

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