Carbon Nanotubes-Silica Nano Composite Synthesis By CVD Method: A Promising Composite Material Development for Lithium Ion Battery Application

Carbon-silicon material for lithium ion battery has recently been realized is promising material due to excellent lithiation property of silicon coupled with good carbon nanotube electrical conductivity in nanocomposite. In this work such material synthesis technique is described by first employing nickel silica alcogel as catalyst followed by direct chemical vapor deposition of prepared catalyst to result into nickel silicon carbon nanotubes nanocomposite. later, nickel metal which formed in-situ during CVD is successfully removed by treatment with concentrated hydrochloric acid. Thus, we have just synthesized this unique material which is promising and may be used as suitable anode material for lithium ion battery and lithium ion battery tests such as charge discharge, energy density, power density etc. will be performed and results will be presented by the time of conference. The graphitic carbon deposition was confirmed by X-ray diffraction (XRD) studies and field emission secondary electron microscopic (FE-SEM) images reveled the tube-like and nest type morphologies which are characteristics of MWCNTs in silica matrix. The effect of nickel content and temperature on carbon nanotubes contents in silica matrix were also studied. The carbon content in the samples was estimated with CHNS elemental analyzer. The average tube diameter of material synthesized was in the range of 30-60 nm. Moreover, it was found that 12M hydrochloric acid concentration was required to completely remove nickel content from synthesized carbon nanotubes nanocomposite which was confirmed by XRD studies. Figure 1