ELECTRODE COMPOSITE BASED ON THE REDOX ACTIVE ORGANIC MOLECULES AS AN ELECTRODE MATERIAL FOR USE IN LI-ION BATTERIES

摘要

The present invention is related to electrode composite material based on the redox active organic molecules, preferentially quinones, hydroquinones, amines, nitro compounds, fullerenes or their derivatives chemically or physically attached to solid substrate and to the use of prepared electrode composite material in Li-ion batteries. Chemical composition of the substrate can be SiO2, TiO2, functionalized carbon, gold, indium tin oxide glass (ITO) or all others chemically stable substrates with a large surface area that can be either electrochemically inert or electrochemically active. Chemical attachment (grafting) or chemisorptions on the solid substrate can be achieved through the free -OH (hydroxyl), -COOH (carboxyl) functional groups of the substrate or through -SH (tiol), -S- (sulphid), CSNH2 (tioamid) functional groups of redox active organic molecule. Substrate having the surface area larger than 10 m2/g can accommodate at least 1wt.% of redox active organic molecules or more and prepared electrode composite shows reversible electrochemical activity in the potential window between IV and 4.5V versus lithium reference.