▎ 摘　　要

NOVELTY - Preparing porous film assembly based on mixed-dimensional nano-material involves dispersing nano-cellulose uniformly in water to obtain nano-cellulose suspension aqueous solution, adding carbon nanotube powder into nano-cellulose suspension aqueous solution, and performing first self-assembly to form uniform dispersion solution to obtain amphiphilic 1D/1D nanocellulose doped carbon nanotubes (CNF-CNT) assembly. USE - Method for preparing porous film assembly based on mixed-dimensional nano-material used in electrochemical energy storage, sensor, flexible and wearable device in the field of material engineering. ADVANTAGE - The prepared porous film assembly has a continuous, compact layer-by-layer stacking structure, exhibits a high specific surface area and excellent surface electrical conductivity, and has good flexibility and excellent processing. The material of porous film assembly is commercial product, portion is derived from natural product, has low price, simple processing, does not relate to any toxic and harmful substance, and has no obvious phase separation or precipitation phenomenon within 2 weeks. DETAILED DESCRIPTION - Preparing porous film assembly based on mixed-dimensional nano-material involves dispersing nano-cellulose uniformly in water to obtain nano-cellulose suspension aqueous solution, adding carbon nanotube powder into nano-cellulose suspension aqueous solution, and performing first self-assembly to form uniform dispersion solution to obtain amphiphilic 1D/1D nanocellulose doped carbon nanotubes (CNF-CNT) assembly. The reduced graphene oxide powder is added into aqueous solution of CNF-CNT assembly, intercalation second self-assembly is performed on the reduced graphene oxide nanosheets, black uniform suspension is formed after treatment, and 1D/2D assembly nanocellulose doped carbon nanotubes doped with reduced graphene oxide (CNF-CNT-RGO) is constructed.