Synthesis and characterization of H2V3O8 nanorods for electrochemical devices

Vanadium oxide hydrate (H2V3O8) nanorods to be used as cathode material in secondary batteries were synthesized using a hydrothermal method without templates and reducing agents. The obtained pristine product was characterized using X-ray diffraction, Fourier transform infrared spectroscopy, scannin...

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Bibliographic Details
Published in:Current applied physics 2013, 13(1), , pp.237-240
Main Authors: Channu, V.S. Reddy, Holze, Rudolf, Rambabu, B.
Format: Article
Language:English
Subjects:
batteries
Cathodes
Charge
Computing time
Devices
electrochemistry
electrodes
Fourier transform infrared spectroscopy
Hydrates
Hydrothermal method
Lithium ion batteries
Morphology
Nanorods
physics
reducing agents
Scanning electron microscopy
transmission electron microscopy
vanadium
Vanadium oxides
X-ray diffraction
물리학
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Summary:Vanadium oxide hydrate (H2V3O8) nanorods to be used as cathode material in secondary batteries were synthesized using a hydrothermal method without templates and reducing agents. The obtained pristine product was characterized using X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and transmission electron microscopy. Cyclic voltammetry and charge/discharge studies were conducted to examine the electrochemical performance of cathodes made of these vanadium oxide hydrate nanorods. The specific capacity of the vanadium oxide hydrate nanorods is 292 mAh/g, the columbic efficiency is about 95%. The calculated capacities are 42.8 F/g at 5 mV/s and 39.2 F/g at 10 mV/s scan rate. ► H2V3O8 nanorods were synthesized for electrochemical devices by hydrothermal method. ► The diffraction spots can be indexed to an orthorhombic structure of H2V3O8. ► The specific capacity of the vanadium oxide hydrate nanorods is 292 mAh/g.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2012.07.013