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Study on collaborative strategy between Fe3+ and Ni-based metal-organic frameworks for boosting electrocatalytic oxygen evolution
Received date: 2023-05-25
Online published: 2024-02-06
The metal-organic framework materials（phen-Ni） were synthesized by solvothermal method，and then Fe@phen-Ni electrocatalys were prepared by doping heterometallic Fe3+.The morphology，crystal structure and chemical composition of Fe@phen-Ni were characterized by X-ray single crystal diffractometer，scanning electron microscope（SEM），transmission electron microscope（TEM） and X-ray photoelectron spectrometer（XPS）.The electrochemical oxygen evolution reaction（OER） activity of Fe@phen-Ni was investigated by linear sweep voltammetry（LSV） and electrochemical impedance spectroscopy（EIS）.The results exhibited that Fe@phen-Ni had more excellent electrocatalytic performance with an overpotential of 333 mV at the current density of 10 mA/cm2 when compared with that of phen-Ni.The improvement could be attributed to the two factors.The introduction of Fe3+ increased the active site of the electrocatalyst.The synergistic action of Fe3+ and Ni2+ promoted the electron transfer.This work not only confirmed that doping of Fe3+ was beneficial to improve the electrocatalytic oxygen-evolution activity，but also provided a new idea for the preparation of electrocatalytic OER catalysts based on metal-organic frame materials.
CHEN Xingliang , FAN Wenjuan , CHANG Hui , HUANG Haiping , JIANG Zhiqiang . Study on collaborative strategy between Fe3+ and Ni-based metal-organic frameworks for boosting electrocatalytic oxygen evolution[J]. Inorganic Chemicals Industry, 2024 , 56(2) : 152 -158 . DOI: 10.19964/j.issn.1006-4990.2023-0287
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