Copper foil for battery anode substrate

Item

Data

width (mm)

300mm

Thickness (um)

8

areal density (g/m2)

85-90

Purity(%) More than 99.9%

Cu ≥ 99.9%

Fe < 0.0010%

Bi < 0.00020%

Pb < 0.0005%

Tensile strength (MPa)

≥ 294

Normal elongation(%)

2.5

High temperature Tensile strength 180℃ (MPa)

≥ 147

High temperature elongation 180℃ (%)

2

Anti oxidization (180℃ Heating 1h)

No oxidation of points on the surface, The color does not change, Copper foil without fracture

Surface roughness (um)Rz

Drum side (um)

Less than 0.3

Matte side (um)

Less than 3.0

Surface tension (dyne/cm)

Drum side

62

Matte side

62

Coating performance

Cu foil with uniform tension on both sides, slurry coating uniformity