▎ 摘　　要

NOVELTY - Graphene-based colorful reversible electro-thermochromic film comprises thermochromic layer, base layer, and graphene conductive layer. USE - Used as graphene-based colorful reversible electro-thermochromic film. ADVANTAGE - The film can work at low voltage, has uniform heating, fast response to discoloration, high contrast, adjustable color and discoloration temperature, and has certain flexibility and mechanical stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation and application of a colorful reversible electrothermochromic film based on graphene, comprising printing thermochromic layer slurry on the front side of the base layer by screen printing technology to obtain the thermochromic layer, printing graphene electric heating paste on the reverse side of the base layer by screen printing technology to obtain a graphene electric heating film, i.e. a graphene conductive layer, drying at 50℃ for 1 hour, printing conductive silver paste circuit on the graphene conductive layer, and using conductive copper tape to connect the circuit to obtain a graphene electrothermochromic fabric.