首页|Fe regulating Ni3S2/ZrCoFe-LDH@NF heterojunction catalysts for overall water splitting
Fe regulating Ni3S2/ZrCoFe-LDH@NF heterojunction catalysts for overall water splitting
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With the continuous depletion of traditional energy sources,the development of sustainable energy sources has become one of the important tasks today.A two-step synthesis method was employed to construct Ni3S2/ZrCoFe-LDH@NF heterostructured electrocatalysts on nickel foam(NF)in situ.X-ray diffractometer,scanning electron mi-croscope,transmission electron microscope,and X-ray electron spectroscopy were employed to characterize the Ni3S2/ZrCoFe-LDH@NF heterostructure,and the hydrogen-extraction reaction(HER),oxygen-extraction reaction(OER)and total hydrolysis properties of this electrocatalyst were tested in 1 mol·L-1 KOH electrolyte.It is shown that Ni3S2/ZrCoFe-LDH@NF is a lamellar stacked heterostructure with an overpotential of 330 mV and a Tafel slope of 90.9 mV·dec-1 at a current density of 100 mA·cm-2 in the OER reaction and 159.2 mV at a current density of 10 mA·cm-2 in the HER reaction.The Tafel slope is 96 mV·dec-1,and the catalyst exhibits good structural stability in the 100 h total hydrolysis stability test.The successful construction of this heterostructured electrocatalyst pro-vides a good idea and research basis for the subsequent heterojunction and its application in electrocatalysis.
Ni3S2/ZrCoFe-LDH@NFHeterostructureHEROEROverall water splitting
School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong,723001,China
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,College of Chemistry & Chemical Engineering,Ningxia University,Yinchuan,750021,China
国家自然科学基金Natural Science Basic Research Program of Department of Science and Technology of Shaanxi Province
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