Paper Details

Sulfur is a promising cathode material with a high theoretical specific capacity of 1675 mAh g-1, but thechallenges of the low electrical conductivity of sulfur and the high solubility of polysulfide intermediates still hinder itspractical application. Common choice to overcome these problems is by adding conductive carbons, conductivepolymers and metal oxides with sulfur. Among them, metal oxide can help to prevent the dissolution of polysulfideintermediates. Particularly, silica is found to be an abundant material and served as polysulfide absorber throughchemical bonding. In this work, SiO2/Sulfur composites cathode material has been synthesized via solid state reaction.The prepared composites have characterized for structural and morphological analyses using XRD, FTIR, RAMAN andSEM. From the XRD analysis no impurities has been observed in the as-prepared compositesand also found wellmatched with the standard pattern of sulfur. Raman analysis confirms the presence of sulfur in the as-synthesizedcomposites. The vibrational bands of silicon have been confirmed through the Fourier Transform Infrared Spectroscopy.From these results, it is inferred that the wrapping of SiO2does not impart any lattice changes and it is expected to givechanges in electrochemical properties rather than physical structure.

P.Rajkumar, M.Sivakumar, R.Subadevi, “STUDIES ON SILICA WRAPPINGSULFUR ELECTRODE MATERIAL FOR LITHIUM SULFUR BATTERIES”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 17, pp. -, January 2017.