Patent ID: 8404126

Claim:
A manufacturing process of an electrode provided with a perforated current collector, comprising: a protection layer formation step in which a protection layer spreading on one surface of a current-collector material is formed while a protection layer having a predetermined pattern is formed on the other surface of the current-collector material; an etching step for performing an etching process on the current-collector material from the surface on which the protection layer having the predetermined pattern is formed so as to form through-holes on the current-collector material; a mixture layer formation step in which an electrode slurry is applied onto the current-collector material having the protection layers and the through-holes so as to form an electrode mixture layer; and a heat treatment step in which the current-collector material having the mixture layer in the mixture layer formation step is heated at 150° C. to 200° C., wherein the protection layers are formed by using polyvinyldiene fluoride solution consisting only of polyvinyldiene fluoride as a solute.