Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7993967 | Journal of Alloys and Compounds | 2018 | 20 Pages |
Abstract
We report a facile method to synthesize nanocomposites with Fe2O3 nanoparticles (NPs) loaded on the surface of the reduced graphene oxide nanosheets (rGO) or wrapped into rGO sheets by simply regulating the temperatures and times of the hydrothermal reaction, which combines the growth of Fe2O3 NPs and the reduction of graphene oxide simultaneously. The morphology and microstructure of these samples were examined by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectra, X-ray photoelectron spectroscopy, Fourier transform infrared spectrometer and nitrogen isothermal adsorption-desorption. The effects of different temperatures and times of hydrothermal reaction on the microstructure and capacitive performance of these prepared composites were investigated in detail. The as-synthesized mulberry-shaped α-Fe2O3 NPs/graphene nanocomposite shows remarkable pseudocapacitive activity containing high specific capacitance (1051 F gâ1 at 1 A gâ1) and excellent rate capability (548 F gâ1 at 30 A gâ1).
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Penggao Liu, Dongling Wu, Yang Gao, Tao Wang, Yangyang Tan, Dianzeng Jia,