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.
Li Ying, Xu Chao, Kang Junjun, Xu Wenkai
. Preparation and electrochemical property of Mn/Fe doped graphene composite[J]. New Chemical Materials, 2020
, 48(11)
: 54
-59
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.11.012
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