The present invention discloses a
graphene / CNTs / Super-P composite electric conduction agent, a composite electric conduction agent
slurry, and preparation methods of the
graphene / CNTs / Super-P composite electric conduction agent and the composite electric conduction agent
slurry, wherein the composite electric conduction agent comprises
graphene, CNTs (carbon nano-tubes) and Super-P (electric conduction
carbon black). The preparation method comprises: adding a graphene
oxide slurry, carbon nano-tubes, electric conduction
carbon black and a surfactant to a reaction kettle, uniformly stirring, carrying out complete
ultrasonic dispersion,
drying, crushing, adding the crushed mixture to a
muffle furnace, puffing in air, carrying out a
reduction treatment in an
inert atmosphere, and cooling to a
room temperature to obtain the composite electric conduction agent
powder, wherein the composite electric conduction
powder can further be mixed with a
solvent, and stirring and
ultrasonic dispersion are performed to prepare the composite electric conduction agent slurry. According to the present invention, the composite electric conduction agent has excellent performances, and is suitable for being used as the electric conduction agent of power
ion batteries; and the used preparation process has characteristics of simpleness and low
energy consumption, and is suitable for large-scale industrial production.