Copper foil is mostly used as a key base material for the negative electrode of mainstream rechargeable batteries because of its high conductivity properties, and as a collector and conductor of electrons from the negative electrode. Its main role is to bring together the current generated by the battery's active material to produce a larger current. The surface of CIVEN METAL's copper foil for battery negative electrode is treated with a special process so that the coated battery negative electrode material is evenly distributed and not easy to separate and fall off. At the same time, in order to make the battery have higher energy density per unit, CIVEN METAL has developed ultra-thin copper foil material, which can make the individual cell smaller and lighter. The copper foil for battery negative electrode of CIVEN METAL has the characteristics of high purity, good denseness, high precision and easy coating.High-precision RA Copper Foil [BCF] Battery ED Copper Foil *Note: All the above products can be found in other categories of our website, and customers can choose according to the actual application requirements. If you need a professional guide, please contact with us.High purity, good denseness, high precision, and easy to coat.