Inorganic Chemicals Industry ›› 2024, Vol. 56 ›› Issue (2): 152-158.doi: 10.19964/j.issn.1006-4990.2023-0287

• Catalytic Materials • Previous Articles    

Study on collaborative strategy between Fe3+ and Ni-based metal-organic frameworks for boosting electrocatalytic oxygen evolution

CHEN Xingliang1(), FAN Wenjuan2, CHANG Hui2, HUANG Haiping1, JIANG Zhiqiang2()   

  1. 1.Faculty of Meterials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China
    2.Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua University,Panzhihua 617000,China
  • Received:2023-05-25 Online:2024-02-10 Published:2024-02-06
  • Contact: JIANG Zhiqiang E-mail:Chenxl43@163.com;myjiangzq@163.com

Abstract:

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.

Key words: metal-organic frameworks, electrocatalysis, oxygen evolution reaction, nonprecious metal electrocatalyst

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