▎ 摘　　要

NOVELTY - Composite bottom coating conductive agent comprises a carbon nanotubes, graphene, conductive carbon black SP, where the carbon nano-tube comprises a small diameter and a large diameter two kinds of carbon nano tubes. The tube diameter of the small tube diameter carbon nano tube is 0.1-0.5 nm, and the tube length is 0-2 microns, the tube size of the large diameter carbon nanofiber tube is 3-20 nm and the length of the tube is about 0.5-20 microns. USE - Composite bottom coating conductive agent is useful for preparing lithium battery anode active slurry or coating carbon foil slurry, where the lithium battery is used in electric vehicles. ADVANTAGE - The composite bottom coating conductive agent: has small internal resistance, high capacity, and long cycle life characteristics; and improves the consistency of the slurry consistency and internal resistance distribution by compounding, so as to solve the anode the impedance of the active substance layer and the foil material contact contact contact large, the uneven dispersion of the conductive agents and the difficult problem that the powder material is difficult to peel and process from the pole piece. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of composite bottom coating conductive agent. DESCRIPTION OF DRAWING(S) - The drawing shows an enlarged view of a bottom-coated conductive agent microscope.