▎ 摘　　要

NOVELTY - Preparing a highly conductive macroscopic graphene assembly film close to the lower limit of Poisson's ratio involves performing high-temperature reduction of an insulating macroscopic graphene oxide assembly film. The insulating macroscopic graphene oxide assembled film is assembled from a precursor graphene oxide. The high-energy crushing process is used to obtain precursor graphene oxide slurries with different scale sizes, and assembled the precursor graphene oxide slurry into a film and dried to obtain an insulating macroscopic graphene oxide assembly film with negative Poisson's ratio characteristics. The preparation method of described highly conductive macroscopic graphene assembled film involves using a high-temperature graphitization heat treatment method, and reducing the insulating macroscopic graphene oxide assembly film to obtain a high-conductivity macroscopic graphene assembly film. USE - Method for preparing a highly conductive macroscopic graphene assembly film close to lower limit of Poisson's ratio used for tissue scaffolds, smart sensors, protective equipment, and national defense engineering. ADVANTAGE - The method achieves highest electrical conductivity of 105 siemens m-1, of the negative Poisson's ratio macroscopic graphene assembled film.