▎ 摘　　要

NOVELTY - Dispersion method of composite electroconductive agent involves mixing electroconductive carbon black, N-methylpyrrolidone and 5-15 %mass surfactant, subjecting the resultant mixture to ultrasonic dispersion process, adding carbon nanotubes and graphene, and carrying out high-speed dispersing process. The composite electroconductive agent comprises 0.5-14.5 wt.% graphene, 5.5-14.5 wt.% carbon nanotubes and electroconductive carbon black. USE - Dispersion method of composite electroconductive agent used in electrode slurry of lithium ion capacitor. ADVANTAGE - The method enables the dispersion of composite electroconductive agent having three-dimensional network structure, by a simple process. The lithium ion capacitor provided with electrode obtained using the slurry comprising composite electroconductive agent has high energy density and excellent power performance.