▎ 摘　　要

NOVELTY - Cellulose composite material comprises type I cellulose fibers comprising cellulose nanocrystals and/or cellulose nanofibers, and carbon material comprising carbon nanotubes, carbon nanofibers, graphene and/or graphene oxide. USE - The cellulose composite material is useful in dyes, such as conductive dyes or paints, electronics, optoelectronics, transistors, touch screens, medicine, biomedicine, tissue engineering, health diagnostics, sensors and biosensors, food security, packaging, textiles, such as electronic textiles, labels, radio frequency tags, automotive industry, energy industry including production and storage and construction materials, and used in conductive paint composition (all claimed), used for printed electronics applications, such as screen-printing, pad-printing and inkjet printing to different mass-printing methods, such as offset printing, engraving and flexography, and in cost-effective electronic products on common-use materials, such as papers or textiles. ADVANTAGE - The composite material has high conductivity, improved mechanical and thermal properties, high surface area, high carrier mobility at room temperature, quantum hall effect, increased electrical and thermal conductivity, optical transparency, excellent thermal conductivity, mechanical strength, stability, flexibility and electrical conductivity, and is cost-effective. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing the cellulose composite material, involving (a) preparing suspension comprising type I cellulose fibers comprising cellulose nanocrystals and/or cellulose nanofibers, and carbon material comprising carbon nanotubes, carbon nanofibers, graphene and/or graphene oxide, (b) uniformly mixing the suspension, and (c) optionally reducing carbon material in mixture of previous process; and (2) a conductive paint composition comprising cellulose composite material, polymer binder and carrier solvent.