纳米花状Fe y -NiCoS x @NF催化材料制备及电解海水制氢析氧的研究

doi:10.19964/j.issn.1006-4990.2024-0182

Abstract

Abstract:

The development of hydrogen production via electrolysis of seawater is impeded by the complex composition of seawater，the short lifespan of anode catalysts，and the competitive reaction for chlorine evolution in high-chloride environments.Consequently，the design of efficient，stable，and highly selective catalysts is crucial for the oxygen evolution reaction（OER） in electrolytic processes.Transition metal sulfides（TMDs），doped with varying contents of iron（Fe），have been investigated extensively as potential catalysts for the anodic OER.In this study，TMD catalysts with Fe doping were synthesized in situ on nickel foam substrates using a hydrothermal synthesis method.The experimental results demonstrated that when the Fe doping amount was 0.5 mmol，the synthesized catalyst exhibited a unique nano-flower structure，which effectively exposed the active sites of the catalyst and enhanced mass transport and gas diffusion during the reaction.The catalytic performance of the OER was excellent in both alkaline and simulated seawater systems.In the alkaline system，a current density of 10 mA/cm² was achieved with an overpotential of only 133 mV.In the simulated seawater system，the catalyst could operate continuously for over 100 hours at a current density of 10 mA/cm²，displaying superior long-term stability compared to commercial RuO₂ catalysts.This study provided a highly efficient and stable anode material for hydrogen production from electrolytic seawater，offering new insights and directions for the realization of sustainable hydrogen energy production.

Key words: hydrogen production by electrolytic seawater, oxygen evolution reaction, transition metal sulfide, element doping

CLC Number:

TQ151.1

ZHANG Bao, QUAN Kaidong, WANG Yongfeng, HAN Fei, SHI Aiwen, LIU Xin, WANG Xiaomin. Study on fabrication of nanoflower-like Fe _y -NiCoS _x @NF catalysts and their application in hydrogen evolution and oxygen evolution during seawater electrolysis[J]. Inorganic Chemicals Industry, 2025, 57(2): 130-137.

Figures/Tables 6

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Table 1

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催化剂材料	过电位（η₁₀）/mV
Fe_0.5-NiCoS _x @NF*（本工作）	133
MgO/NCS-CC^［29］	145
Ni₂P-Fe₂P/NF^［30］	218
NiFe-LDH @NiCoP/NF^［31］	220
NiCo₂S₄@NF^［32］	172
Fe-NiCo₂S₄@NF^［22］	181
MoS₂@CoFeLDH^［33］	216
A-NiFeV/NF^［34］	234
NiS/NiCo₂S₄^［35］	259
NiFeRu-LDH/NF^［36］	225

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Study on fabrication of nanoflower-like Fe _y -NiCoS _x @NF catalysts and their application in hydrogen evolution and oxygen evolution during seawater electrolysis

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Study on fabrication of nanoflower-like Fe y -NiCoS x @NF catalysts and their application in hydrogen evolution and oxygen evolution during seawater electrolysis