The advantages of PET composite copper foil are outstanding. The PET composite copper foil adopts a “sandwich structure” with copper plating on both sides of the PET film, which has the advantages of safety, low cost and high energy density:
When the PET copper foil is punctured, it can form an open circuit and play a “fuse” effect to prevent the battery from catching fire;

The PET copper foil is light in weight, and the energy density of the battery is improved.