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- W3038608085 abstract "Abstract By using a facile hydrothermal method, we synthesized Ni 1−x Mn x Fe 2 O 4 nanoparticles as supercapacitor electrode materials and studied how the incremental substitution of Ni with Mn would affect their structural, electronic, and electrochemical properties. X-ray diffractometry confirmed the single-phase spinel structure of the nanoparticles. Raman spectroscopy showed the conversion of the inverse structure of NiFe 2 O 4 to the almost normal structure of MnFe 2 O 4 . Field-emission scanning electron microscopy showed the spherical shape of the obtained nanoparticles with a size in the range of 20–30 nm. Optical bandgaps were found to decrease as the content of Mn increased. Electrochemical characterizations of the samples indicated the excellent performance and the desirable cycling stability of the prepared nanoparticles for supercapacitors. In particular, the specific capacitance of the prepared Ni 1−x Mn x Fe 2 O 4 nanoparticles was found to increase as the content of Mn increased, reaching the highest specific capacitance of 1,221 F/g for MnFe 2 O 4 nanoparticles at the current density of 0.5 A/g with the corresponding power density of 473.96 W/kg and the energy density of 88.16 Wh/kg. We also demonstrated the real-world application of the prepared MnFe 2 O 4 nanoparticles. We performed also a DFT study to verify the changes in the geometrical and electronic properties that could affect the electrochemical performance." @default.
- W3038608085 created "2020-07-10" @default.
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- W3038608085 date "2020-07-02" @default.
- W3038608085 modified "2023-10-14" @default.
- W3038608085 title "Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties" @default.
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- W3038608085 doi "https://doi.org/10.1038/s41598-020-67802-z" @default.
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