化工新型材料

Abstract

Fe₃O₄-modified Fe₃O₄@RGO composites with different sizes were synthesized by changing the ratio of different solvent via solvothermal method.Briefly,using ethylene glycol and diethylene glycol as solvent,FeCl₃ as original material and graphene oxide as substrate.And then the MnFe₂O₄@RGO and Fe₃O₄/MnO₂@RGO composites were successfully prepared by hydrothermal reduction one-step method and oxidation-reduction two-step method.The structure and morphology of as-prepared MnFe₂O₄@RGO and Fe₃O₄/MnO₂@RGO were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).Moreover,the electrochemical properties of the as-prepared composites were tested respectively by electrochemical workstation.The results shown that the electrochemical performances of Fe₃O₄@RGO were enhanced by the loading of MnO₂,and Fe/Mn mass ratio of 3∶8 exhibited enhanced electrochemical performance and better stability.

关键词

氧化石墨烯 / 四氧化三铁 / 锰铁氧体 / 二氧化锰 / 电化学性能

Key words

graphene oxide / Fe₃O₄ / MnFe₂O₄ / MnO₂ / electrochemical property

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锰/铁掺杂石墨烯复合材料的制备及电化学性能研究[J]. 化工新型材料, 2020, 48(11): 54-59 DOI:10.19817/j.cnki.issn 1006-3536.2020.11.012

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