Electrochemical properties of Sn-based nanopowders synthesized by a pulsed wire evaporation method and effect of binder coating

• Sn-based nanoparticles are fabricated by using the pulsed wire evaporation method.
• The electrodes are prepared by mixing the graphene and coating the surface.
• Coating the surface of electrode is used with brushing of simple and facile method.
• The electrochemical measurements are performed with galvanostatic experiments.
• The coating electrode maintains capacity nearly of 501 mAh g−1 up to 100 cycles.

Sn-based nanoparticles are prepared with the O2 concentrations in chamber of Ar atmosphere (by v/v) by using the pulsed wire evaporation (PWE) method. The prepared electrodes are only Sn-based powder electrode, its binder coating electrode and Sn-based powder/graphene nanocomposite electrode. Morphology and structure of the synthesized powders and electrodes are investigated with a field emission scanning electron microscope (FE-SEM) and an X-ray diffraction (XRD) analysis. The electrochemical measurements were performed with galvanostatic cycling experiments using a coin type cell of CR2032 (Ø20, T3.2 mm). The binder coating electrode is superior to others and maintains delithiation capacity nearly of 501 mAh g−1 as 58.3% of first delithiation capacity at 0.2 C-rate up to 100 cycles.

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