ELECTRODE COMPOSITE BASED ON REDOX-ACTIVE ORGANIC MOLECULES AS ELECTRODE MATERIAL IN LITHIUM ION BATTERIES

摘要

The invention refers to an electrode composite based on redox-active organic molecules, preferentially quinones, hydroquinones, amines, nitro compounds, fullerenes and their derivatives, physically or chemically bound to a solid substrate as well as to the preparation of such composite. Chemical bonding, i.e. chemisorption of redox-active organic molecules onto a solid inorganic substrate, where the substrate is SiO2, TiO2, functionalised carbon, gold, ITO or any other chemically resistant, inert or redox-active substrate with a great surface, is carried out via free -OH (hydroxyl), -COOH (carboxyl) functional groups of a substrate or -SH (thiol), -S (sulphide), -CSNH2 (thioamide) functional groups of organic molecules. The share of redox-active organic molecules on a substrate with a surface greater than 10 m2/g is higher than 1 m/m %. The electrode composite exhibits reversible redox-activity within the potential window from 1 V to 4.5 V in respect to metallic lithium.