PROBLEM TO BE SOLVED: To sharply restrain the degradation of charging-discharging capacity of a battery using this electrode and the degradation of a load characteristic by spraying titania and a silicon inorganic material on the surface of a collector, and performing light irradiating processing after it is dried before slurry containing an electrode active material is applied to the collector. SOLUTION: A mixture 4 of titania and a silicon inorganic material is sprayed on a surface of metallic foil 1 supplied from reel 2a. The sprayed mixture 4 is dried by a drier 5. Next, light irradiating processing is performed by corona discharge or the like by using a light radiator 6. By using a coater 7, slurry 8 containing an electrode active material is applied in a constant thickness to a surface of the metallic foil 1 on which these processing is performed. Then, it is passed through a slurry drying furnace 9, and a solvent in the slurry 8 is removed, and the slurry is dried, and is wound round a reel 2b. When this plate is used, a paint film of the electrode active material does not fall in a battery assembling process.