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Enhanced lithium storage of mesoporous vanadium dioxide(B) nanorods by reduced graphene oxide support

Journal of Energy Chemistry 2018年第1期27卷 183-189页

作者： Thummala Jayalakshmi Kottam nagaraju ganganagappa nagaraju Dept.of Chemistry Siddaganga Institute of Technology(Affiliated to Visvesvaraya Technological UniversityBelgaum) Dept.of Chemistry M.S.Ramaiah Institute of Technology(Affiliated to Visvesvaraya Technological UniversityBelgaum)

A facile synthesis of vanadium oxide with reduced graphene oxide（rGO） is developed and used as cathode material for lithium ion batteries. VO_2（B） nanorods and VO_2（B）-rGO composite were prepared by a hydrothermal method using NaVO_3 precursor and sodium oxalate as a reducing agent. The monoclinic phase and nanorod like morphology of synthesized materials were confirmed by XRD, SEM, and TEM respectively. The electrochemical properties of samples were investigated at 1.5–4.0 V, and 0.1 C rate,and the VO_2（B） nanorods exhibit reversible capacity of about 159 mAh g^（-1）, whereas VO_2（B）-rGO exhibits 274 mAh g^（-1）. The reasonable discharge capacities were obtained at high rates. The enhanced performance in electrical energy storage system reveals the effectiveness of rGO in the composite, as it enhances the conductive electron pathway to overcome the intrinsic limits of single phase VO_2（B）.

关键词： VO2(B) and VO2(B)-rGO compositeNanorodsMesoporousLithium-ion battery

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Surfactant Assisted Hydrothermal Synthesis of CdSe Nanostructural Materials

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Journal of Materials Science & Technology 2012年第6期28卷 495-499页

作者： ganganagappa nagaraju Gujjarahalli Thimmanna Chandrappa Department of Chemistry Central College CampusBangalore UniversityBangalore-560001India Laboratory of Molecular Catalysis Institute of ChemistryUFRGSPorto AlegreBrazil

CdSe/CTAB composite nanostructural materials were successfully synthesized at 160-200℃ for 2 days through a facile surfactant （cetyl trimethyl ammonium bromide-CTAB） assisted hydrothermal method us- ing cadmium acetate and sodium selenate as precursor. The obtained products were characterized by X-ray diffraction, energy dispersive X-ray analysis, Fourier transform infrared spectroscopy and thermo gravimetric analysis. Optical properties were studied by photoluminescence and UV-visible spectroscopy and morphology was investigated by scanning electron microscopy.

关键词： Hydrothermal Surfactant Nanostructure CdSe/CTAB composite

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