Preparation and characterization of SiO2/C nanocomposites by a combination of mechanochemical-assisted sol-gel and dry ball milling processes

Anara Molkenova, Izumi Taniguchi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

A novel preparation route was developed for synthesizing SiO2/C nanocomposites through a mechanochemical-assisted sol-gel process combined with a high-energy dry ball milling process. The effect of process parameters, such as milling time, rotation speed and carbon content, on the structure and morphology of SiO2/C nanocomposites was investigated by X-ray diffraction, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy and transmission electron microscopy with energy-dispersive spectroscopy. It was demonstrated from the physical characterization that the proposed preparation route might be an effective synthesis route for SiO2/C nanocomposites consisting of highly dispersed carbon nanoparticles on fine amorphous SiO2 particles. The electrochemical performance was characterized using Li|1 M LiPF6 in EC:DMC = 1:1| SiO2/C cells in the potential range from 0.01 to 3.0 V versus Li/Li+. The SiO2/C nanocomposite prepared under optimized process conditions exhibited a highly stable reversible capacity of 663 mA h g-1(872 mA h g-SiO2-1) at a current density of 46 mA g-1 after 30 cycles with no capacity fading.

Original languageEnglish
Pages (from-to)377-384
Number of pages8
JournalAdvanced Powder Technology
Volume26
Issue number2
DOIs
Publication statusPublished - Mar 1 2015

Keywords

  • Anode
  • Ball milling
  • Lithium-ion batteries
  • Mechanochemical-assisted sol-gel process
  • Nanocomposites
  • SiO/C

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Preparation and characterization of SiO<sub>2</sub>/C nanocomposites by a combination of mechanochemical-assisted sol-gel and dry ball milling processes'. Together they form a unique fingerprint.

Cite this