Journal of Nanomedicine & Nanotechnology

Development of new innovative syntheses of spinel nano-Li4Ti5O12 as anode material to next generation LiBs

22^nd International Conference and Expo on Nanoscience and Molecular Nanotechnology

November 06-08, 2017 | Frankfurt, Germany

Monika Michalska and Jeng-Yu Lin

Laboratory of Cells and Supercapacitors, Department of Chemical Technologies Institute of Electronic Materials Technology, Warsaw, Poland
Department of Chemical Engineering, Tatung University, Taipei, Taiwan

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

One of the objectives in lithium ion cells is to replace a costly and unsafe graphite anode with a new type of material - Li4Ti5O12 (LTO) of spinel structure. LTO is cheaper and more safe compared to graphite, due to high potential of 1.55 V vs Li/Li+ which prevents metallic lithium plating on negative electrode during overcharge. Due to no structural change during lithiation/delithiation processes (�??zero-strain�?� electrode) the material shows excellent cyclability. However, Li4Ti5O12 suffers from lower theoretical specific capacity compared to graphite, which is 175 mAh/g and its insulating character, which prevents using it in high current applications. The conductivity of LTO can be greatly improved by various surface modifications, cation doping or preparing this material in the nanocrystalline form.The aim of this work is to present new innovative synthesis and compare two different methods of obtaining spinel LTO nanocrystalline powders, and analyze their structural, morphological and electrochemical properties. Lithium titanium oxide single materials were obtained using: a) solid state synthesis - mechanosynthesis (�??top down�?�) and combustion synthesis method (�??bottom up�?�). During the Conference we will present the effects of our experiments, impact of these two different on the structural parameters using XRD analysis (crystallite size, lattice parameters and volume cells), morphologies by SEM (size and distribution of grains) and electrochemical performances. Acknowledgments This work is financially supported by The National Centre for Research and Development through the research project cooperation between National Centre for Research and Development (NCBR) and the Ministry of Science and Technology of Taiwan (MOST). (contract no. PL-TW/IV/13/2016).