PET Composite Copper Foil (Cu+PET+Cu Sandwich Structure)

Cat No:BMSPEM-0485

Description

This PET composite copper foil from Eata Battery has a Cu+PET+Cu sandwich structure in which copper layers are plated on both sides of a PET polymer film, reducing the amount of copper used in the current collector while keeping a metallic conducting surface on both faces. Key specifications: areal density 24 +/- 0.5 g/cm2; thickness 6.5 um (+ 1 / - 0); width 280 mm; square resistance 20 +/- 3 MΩ; resistivity <= 4 x 10^-8 Ω/m; plating purity 99.9 %; tensile strength >= 240 MPa in both MD and TD; break elongation >= 5 % in both directions; wettability (dyne value) >= 32; no color change and no melting after 150 C for 10 min; no tape detachment in the adhesion test; and no pinholes larger than 500 um. The foil surface is smooth and flat without interlayer folds, indentation, bruises, scratches, corrosion or oil stains. Storage: temperature <= 25 C, humidity <= 65 %, away from direct sunlight and chemical corrosion.