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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0058

    • Keywords

       

      SnO$_2$; lithium-ion battery; centrifugal spinning; composite fibres; anode; TiO$_2$.

    • Abstract

       

      Tin dioxide/titanium dioxide/flexible and carbon fibres ((SnO$_2$/TiO$_2$)/FPCFs) were fabricated via centrifugal spinning (CS) of precursor solutions and used as binder-free anode materials in lithium-ion batteries (LIBs). The SnO$_2$/TiO$_2$/FPCFs were prepared by CS of tin (II) 2-ethylhexanoate/titanium (IV) butoxide/polyvinylpyrrolidone, followed by calcination at 700°C to yield SnO$_2$/TiO$_2$ short fibres. The as-obtained fibres were crushed and mixed in ethanol to form a SnO$_2$/TiO$_2$/ethanol solution. Polyacrylonitrile/polymethyl methacrylate (PAN/PMMA) fibrous mats were also prepared via CS of PAN/PMMA/DMF solutions and were coated with the SnO$_2$/TiO$_2$/ethanol solution and then heat-treated to yield SnO$_2$/TiO$_2$/FPCFs. The structure and morphology of the composite fibres were investigated by scanning electron microscope, energy dispersive X-ray spectrometer), transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and thermogravimetric analysis. When used as binder-free anodes for LIBs, the (3:2) (SnO$_2$:TiO$_2$)/FPCFs exhibited a high reversible capacity of 890 mAh g$^{-1}$ and demonstrated an outstanding columbic efficiency of 98% after 100 charge/discharge cycles at a current density of 100 mAh g$^{-1}$ and good rate capability. For comparison, the electrochemical results of (SnO$_2$)/FPCFs and (SnO$_2$/TiO$_2$)/FPCFs with 1:1 (SnO$_2$:TiO$_2$) ratio are also reported.

    • Author Affiliations

       

      GABRIEL GONZALEZ1 DAVID SANCHEZ1 DANIEL RAMIREZ2 JASON C MYERS3 TIMOTHY P LODGE4 JASON PARSONS2 MATAZ ALCOUTLABI1

      1. Department of Mechanical Engineering, University of Texas, Rio Grande Valley, Edinburg 78539, USA
      2. Department of Chemistry, University of Texas, Rio Grande Valley, Brownsville 78521, USA
      3. College of Science and Engineering, 55 Shepherd Labs, University of Minnesota, Minneapolis 55455-0431, USA
      4. Department of Chemical Engineering and Materials Science and Department of Chemistry, University of Minnesota, Minneapolis 55455-0431, USA

    • Dates

       
      Published
      27 March 2023
      Manuscript received
      23 August 2022
      Accepted
      14 November 2022
      Final version published online
      27 March 2023

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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