Rod-like nanocrystalline B-VO{sub 2}: Hydrothermal synthesis, characterization and electrochemical properties

Journal Article · Thu May 01 04:00:00 EDT 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.01.046· OSTI ID:22348632

Soltane, L. ^[1]

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1. Laboratory of Condensed Matter Chemistry, IPEIT, University of Tunis 2, Jawaher Lel Nehru 1008, B.P. 229 Montfleury (Tunisia)

Graphical abstract: - Highlights: • Rod-like nanocrystalline VO{sub 2}(B) was prepared by hydrothermal process. • Reaction time on the morphology has been investigated. • CV has revealed reversible redox behavior with charge–discharge cycling. • Average coulombic efficiency is upper 98%. • Energy-related applications such as cathodes in lithium batteries. - Abstract: Rod-like nanocrystalline VO{sub 2}(B) has been successfully synthesized via a simple hydrothermal process by using V{sub 2}O{sub 5} as vanadium source and 4-butylaniline H{sub 3}C–(CH{sub 2}){sub 3}–(C{sub 6}H{sub 4})–HH{sub 2} as reducing and structure directing agent. The compounds were analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and UV–visible spectroscopy. The VO{sub 2}(B) nanorods are up to several micrometers in length and about 80 nm in thickness with a large optical band gap of ∼2.709 eV. Thin films of VO{sub 2}(B) nanorods deposited on ITO substrates were electrochemically characterized by cyclic voltammetry. The voltammograms show reversible redox behavior with charge–discharge cycling process corresponding to the reversible lithium intercalation/deintercalation into the crystal lattice. The average coulombic efficiency to this redox processes is upper 98% during the electrochemistry measurements.

• OSTI ID: 22348632
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 53; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CLATHRATES
CRYSTAL LATTICES
CRYSTALS
DEPOSITS
EFFICIENCY
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
LITHIUM
NANOSTRUCTURES
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SUBSTRATES
THIN FILMS
VANADATES
VANADIUM
VANADIUM OXIDES
VOLTAMETRY
X-RAY DIFFRACTION