CATL patent – electrolytic copper foil technology

CN115786997B-electrolytic copper foil and preparation method thereof, anode electrode piece, secondary battery. Application date: 2021-09-10 Publication (Announcement) Date: 2023-08-25         Technical issues The copper foil currently used mainly includes calendered copper foil based on calendering process and electrolytic copper foil based on electroplating process. Calendered copper foil production technology requirements are high,…