MoS2/Ni3S2/NF双功能电催化剂用于高效全水解

doi:10.11896/cldb.22040365

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Abstract By adjusting the hydrothermal reaction time, the nickel foam(NF) self-supporting MoS₂/Ni₃S₂/NF heterostructure array was synthesized by one-step hydrothermal method. The phase analysis and morphology characterization of MoS₂/Ni₃S₂/NF electrocatalysts were analyzed by XRD, XPS, SEM and EDS. The electrocatalytic hydrogen evolution reaction(HER) and oxygen evolution reaction (OER) properties in 1.0 mol·L^-1 KOH alkaline electrolyte were tested. The results show that when the current density of HER and OER increases to 100 mA·cm^-2, the optimal MoS₂/Ni₃S₂/NF-4 composite electrode obtained after hydrothermal reaction for 4 h has low overpotential of 196 mV and 310 mV respectively, and shows low Tafel slope of 30 mV·dec^-1 and 89.6 mV·dec^-1, respectively. In addition, MoS₂/Ni₃S₂/NF-4 heterostructure is used as a bifunctional electrocatalyst. When the current density reaches 10 mA·cm^-2, the electrolytic cell needs a low voltage of 1.50 V, and has good stability under alkaline conditions. There is no significant change in performance within 100 h. It can be seen that MoS₂/Ni₃S₂/NF stalactite rod array can become a bifunctional electrocatalyst for high-efficiency overall water splitting.

Key words： electrocatalysis bifunctional electrocatalyst hydrogen evolution reaction (HER) oxygen evolution reaction (OER) overall water splitting

Published: 25 February 2024 Online: 2024-03-01

CLC number:

O614.81

Fund:National Natural Science Foundation of China (51504147), and the School-level Scientific Research Foundation of Shaanxi University of Technology (SLGQD13(2)-18).

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	JIA Feihong
	WEI Xueling
	BAO Weiwei
	ZOU Xiangyu

Cite this article:

JIA Feihong,WEI Xueling,BAO Weiwei, et al. MoS₂/Ni₃S₂/NF Bifunctional Electrocatalysts for Efficient Overall Water Splitting[J]. Materials Reports, 2024, 38(4): 22040365-7.

URL:

https://www.mater-rep.com/EN/10.11896/cldb.22040365 OR https://www.mater-rep.com/EN/Y2024/V38/I4/22040365

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