Carbon nanotube dispersion liquid, conductor film, and conductive film

A carbon nanotube dispersion liquid comprising:

• carbon nanotubes (A);
• a polymeric dispersant (B) including a sulfonic acid group-containing monomeric unit and an ethylenically unsaturated aliphatic carboxylic acid monomeric unit;
• a solvent (C);
• and
• at least one of hydrochloric acid and nitric acid, wherein
• percentage content of the ethylenically unsaturated aliphatic carboxylic acid monomeric unit in the polymeric dispersant (B) is greater than 20 mol % and no greater than 90 mol %,
• the sulfonic acid group-containing monomeric unit in the polymeric dispersant (B) is a monomeric unit derived from a sulfonic acid group-containing monomer in the form of a sulfonate salt,
• the ethylenically unsaturated aliphatic carboxylic acid monomeric unit in the polymeric dispersant (B) is a monomeric unit derived from at least one selected from the group consisting of a salt of acrylic acid, a salt of methacrylic acid, a salt of maleic acid, a salt of fumaric acid, and a salt of itaconic acid,
• a ratio of G band peak intensity relative to D band peak intensity in a Raman spectrum of the carbon nanotubes (A) is at least 1 and no greater than 20, and wherein
• the solvent (C) includes water, and
• pH of the carbon nanotube dispersion liquid is at least 0.1 and no greater than 2.5.