▎ 摘　　要

NOVELTY - A lithium-ion battery composite anode plate comprises current collector. A coating layer (I) is coated on the surface of the current collector and an active material coating layer is coated on the surface of the coating layer (I). The active material coating comprises active material, binder, carbon black conductive agent, and multi-layer graphene composite conductive powder. The anode slurry is prepared by coating solvent. USE - Lithium-ion battery composite anode plate used in pure electric vehicle and energy storage device. ADVANTAGE - The lithium-ion battery composite anode plate has high battery charge and discharge performance, long cycle life, high safety, reduces the amount of binder, effectively reduces the chip resistance, and increases battery capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of lithium-ion battery composite anode plate, which involves adding expanded graphite, binder, and solvent to obtain slurry (I), coating slurry (I) on both sides of aluminum foil current collector and drying to obtain coating (I), uniformly dispersing multi-layer graphene and one-half of polymeric dispersant in solvent to obtain premixed solution (A), mixing conductive carbon black and remaining polymer dispersant in solvent mixing to obtain premixed solution (B), mixing premixed solution (A) and premixed solution (B), stirring, high-speed homogenizing, heating and drying, cooling and grinding to obtain multilayer graphene composite conductive powder, mixing binder in active material coating with solvent at high speed to prepare glue, adding multi-layer graphene composite conductive powder, carbon black conductive agent, and obtained glue, stirring at high speed, adding lithium iron phosphate to 2-3 times the conductive paste, stirring at high speed and shearing to obtain mixed slurry (II), spraying slurry (II) on both sides of the aluminum foil coated with coating (I) and drying.