Please use this identifier to cite or link to this item: http://idr.nitk.ac.in/jspui/handle/123456789/15946
Title: ZnWO4/SnO2@r-GO nanocomposite as an anode material for high capacity lithium ion battery
Authors: Brijesh K.
Vinayraj S.
Dhanush P.C.
Bindu K.
Nagaraja H.S.
Issue Date: 2020
Citation: Electrochimica Acta Vol. 354 , , p. -
Abstract: Lithium ion battery (LIB) is widely used energy storage device. Herein, we report the preparation of ZnWO4/SnO2 nanocomposite and ZnWO4/SnO2@r-GO nanocomposite via solvothermal method. The structural, elemental and morphological properties of the prepared samples are characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDAX), high-resolution transmission electron microscopy (HR-TEM), Brunauer-Emmett-Teller (BET) measurements, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) techniques. The prepared samples are tested as an anode for LIB. The ZnWO4/SnO2 (5%) nanocomposite delivers initial discharge capacity of 882 mAh g−1 at a current density of 100 mA g−1, while, the specific capacity increases with the increase of SnO2 upto 10% tested in present case. Further, ZnWO4/SnO2@r-GO nanocomposite exhibits a discharge capacity of 1486 mAh g−1 which is higher than that of ZnWO4/SnO2 nanocomposite. In addition, after 500 cycles ZnWO4/SnO2@r-GO nanocomposite exhibits 89.8% cycle life and 98% of discharge capacity retention. These results indicate that, ZnWO4/SnO2@r-GO nanocomposite is a promising anode material for LIB. © 2020 Elsevier Ltd
URI: https://doi.org/10.1016/j.electacta.2020.136676
http://idr.nitk.ac.in/jspui/handle/123456789/15946
Appears in Collections:1. Journal Articles

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