Provided is a coating liquid which is used for forming a conductive coating film on a surface of a current collector constituting an electrode plate for an electricity storage device. The coating liquid contains (A) a polymer acid, (B) a vinyl carboxylate copolymer represented by general formula (1) (wherein R1 is selected from the group consisting of H, Na, an organic group derived from a vinyl carboxylate monomer, and a cation capable of constituting an electrolyte in an electricity storage device, R2 to R4 are each independently selected from the group consisting of H, Na, a C1-C6 alkyl group, and a cation capable of constituting an electrolyte in an electricity storage device, and the ratio of m to n (m/n) is 0.0001 to 1), (C) a conductive material, and (D) a polar solvent.