▎ 摘　　要

NOVELTY - Composite conductive agent comprises a single-wall carbon nanotubes, and other conductive agents. The other conductive agents are conductive carbon fibers, multi-wall carbon nanotubes, carbon black, graphite and/or graphene. The mass ratio of single-wall carbon nanotubes to dry base materials of other conductive agent is 1:(1-10). The other conductive agent is conductive carbon fiber. The silicon material is silicon, silicon oxide, silicon carbide and silicon material pre-lithiated/pre-magnesized silicon material. USE - The composite conductive agent useful for cathode pole piece in consumer electronics, electric automobile and energy storage industry. ADVANTAGE - The composite conductive agent has high length-diameter ratio, crystallinity and electronic conductivity, and improves the conductivity of the cathode. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a conductive agent slurry; a preparation method of the conductive agent slurry; and a preparation method of cathode pole piece.