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

Abstract

Sn-based nanoparticles are prepared with the O-2 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 (empty set 20, T3.2 mm). The binder coating electrode is superior to others and maintains delithiation capacity nearly of 501 mAhg(-1) as 58.3% of first delithiation capacity at 0.2 C-rate up to 100 cycles. (C) 2016 Published by Elsevier Ltd.