Citation: Yuchen Guo, Xiangyu Zou, Xueling Wei, Weiwei Bao, Junjun Zhang, Jie Han, Feihong Jia. Fe regulating Ni3S2/ZrCoFe-LDH@NF heterojunction catalysts for overall water splitting[J]. Chinese Journal of Structural Chemistry, ;2024, 43(2): 100206. doi: 10.1016/j.cjsc.2023.100206 shu

Fe regulating Ni3S2/ZrCoFe-LDH@NF heterojunction catalysts for overall water splitting

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 microscope, 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 provides a good idea and research basis for the subsequent heterojunction and its application in electrocatalysis.
- Ni3S2/ZrCoFe-LDH@NF,
- Heterostructure,
- HER,
- OER,
- Overall water splitting
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