Patent ID: 7935380

Claim:
A method of producing an electrode for a capacitor, which comprises a current collector, an undercoat layer on the current collector, and an electrode layer on the undercoat layer, the method comprising: applying an undercoat layer coating material, which comprises at least electrically conductive particles, a binder and a solvent, onto the current collector, and then drying the applied material to set the amount of the solvent remaining in the applied material within a range of 0.1% by weight or less, thereby forming an undercoat layer; applying an electrode layer coating material, which comprises at least a carbon material, a binder and a solvent, onto the undercoat layer to form an electrode coating layer; drying the electrode coating layer to set the amount of the solvent remaining in the whole of the layers formed on the current collector within a range of 11 to 35% by weight of the layers; and subjecting the electrode coating layer after the drying to calendering treatment to yield an electrode layer, wherein the binder in the undercoat layer coating material and the binder in the electrode layer coating material are the same, and wherein the drying of the electrode coating layer is performed at a temperature of 90° C. to 180° C. for 0.1 to 100 minutes.