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MATAZ ALCOUTLABI
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Volume 46 All articles Published: 27 March 2023 Article ID 0058
GABRIEL GONZALEZ DAVID SANCHEZ DANIEL RAMIREZ JASON C MYERS TIMOTHY P LODGE JASON PARSONS MATAZ ALCOUTLABI
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.
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Bulletin of Materials Science
Volume 46, 2023
All articles
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