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Synthesis and Characterization of Vanadium Nitride/Carbon Nanocomposites. | LitMetric

Synthesis and Characterization of Vanadium Nitride/Carbon Nanocomposites.

Int J Mol Sci

School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, 1 West University Blvd., Brownsville, TX 78521, USA.

Published: June 2024

AI Article Synopsis

  • The study explores creating a vanadium nitride (VN)/carbon nanocomposite through thermal decomposition of vanadyl phthalocyanine (VOPC).
  • Various characterization techniques, including SEM, TEM, and XRD, confirmed the successful synthesis and morphology of the material, showing needle-like VN particles and clusters in the composite.
  • The VN/C nanocomposite demonstrated promising performance as an anode material in lithium-ion batteries, achieving a specific capacity of 307 mAh/g after 100 cycles and a high Coulombic efficiency of 99.8%.

Article Abstract

The present work focuses on the synthesis of a vanadium nitride (VN)/carbon nanocomposite material via the thermal decomposition of vanadyl phthalocyanine (VOPC). The morphology and chemical structure of the synthesized compounds were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoemission spectroscopy (XPS). The successful syntheses of the VOPC and non-metalated phthalocyanine (HPC) precursors were confirmed using FTIR and XRD. The VN particles present a needle-like morphology in the VN synthesized by the sol-gel method. The morphology of the VN/C composite material exhibited small clusters of VN particles. The XRD analysis of the thermally decomposed VOPC indicated a mixture of amorphous carbon and VN nanoparticles (VN(TD)) with a cubic structure in the space group FM-3M consistent with that of VN. The XPS results confirmed the presence of V(III)-N bonds in the resultant material, indicating the formation of a VN/C nanocomposite. The VN/C nanocomposite synthesized through thermal decomposition exhibited a high carbon content and a cluster-like distribution of VN particles. The VN/C nanocomposite was used as an anode material in LIBs, which delivered a specific capacity of 307 mAh g after 100 cycles and an excellent Coulombic efficiency of 99.8 at the 100th cycle.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11241735PMC
http://dx.doi.org/10.3390/ijms25136952DOI Listing

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