Width 100mm High Precision ED Ultra Thin Copper Foil
Produict Information :
We can provide the specific single matte.double matte,and double
shiny ED copper foil with the nominal thickness from 8um to 35um
for the li-ion battery;the width is from 100mm to 1300mm.and the
double shiny ED copper foil has the characteristics of the both
sides.
Features
1. the metal density nearing the copper theoretical density,very
low surface profile,and high elongation and tensile strength;
2. comparing with the single-matte and double matte ED copper
foils,when it adheres with the cathode materials,the contact area
will increase dramatically,
3. it can distinctly reduce the contact resistance between the
cathode current collector and the cathode material;the cathode
current collector of the foil also has excellent resistance of the
cold and heat expansion,
4. it can obviousely increase the service life of batteries.
Performances
(1) High flexibility and extensibility
(2) Even and smooth surface
(3) Good fatigue resistance
(4) Strong antioxidant properties
(5) Good mechanical properties
(6) The material has higher extensibility
(7) It has a high bending resistance
(8) It has no crack.
Technical Data Sheet for Rolled copper foil:
| Test Item | Unit | Thickness |
| 6μm | 7μm | 8μm | 9/10μm | 12μm | 15μm | 20μm |
| Cu Content | % | ≥99.9 |
| Area Weight | mg/10cm2 | 54±1 | 63±1.25 | 72±1.5 | 89±1.8 | 107±2.2 | 133±2.8 | 178±3.6 |
| Tensile Strength(25℃) | Kg/mm2 | 28~35 |
| Elongation(25℃) | % | 5~10 | 5~15 | 10~20 |
| Roughness(S-side) | μm(Ra) | 0.1~0.4 |
| Roughness(M-side) | μm(Rz) | 0.8~2.0 | 0.6~2.0 |
| Width Tolerance | Mm | -0/+2 |
| Length Tolerance | m | -0/+10 |
| Pinhole | pcs | None |
| Change of Color | 130℃/10min 150℃/10min | None |
| Wave or Wrinkle | / | Width≤40mm one allow | width≤30mm one allow |
| Appearance | / | No drape, scratch, pollution, oxidation, discoloration and so on
that effect using |
| Winding method | / | The winding when facing up S side, when the winding tension in the
stable,no loose roll phenomenon |
Note:
We can provide products with other properties according to
customers` requirements.
