Carbon nanotube dispersion liquid, carbon nanotube resin composition, composite material slurry, electrode film, nonaqueous electrolyte secondary battery, and method for producing composite material slurry

The carbon nanotube dispersion liquid contains carbon nanotubes, a dispersant, and a solvent, in the carbon nanotube dispersion liquid, the carbon nanotubes include first carbon nanotubes having an average outer diameter of 0.5 nm to 5 nm and second carbon nanotubes having an average outer diameter of 5 nm to 20 nm, and the mass ratio of the first carbon nanotubes to the second carbon nanotubes is 1: 10 to 1: 100. 一种碳纳米管分散液，包含碳纳米管、分散剂、以及溶媒，所述碳纳米管分散液中，碳纳米管包含平均外径为0.5nm～5nm的第一碳纳米管、以及平均外径为5nm～20nm的第二碳纳米管，第一碳纳米管与第二碳纳米管的质量比率为1：10～1：100。