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Carbon Coated Copper Foil

Carbon Coated Copper Foil

Conductive carbon coated copper foil can replace conventional Al foil as better anode substrate with improved properties.
----Better electrical conductivity and less internal resistivity
----Better mechanical strength and toughness to avoid short circuit caused by dendrite growth
----Better coating strength with electrode material
----Therefore, it will provide larger discharging capability and longer service life for Li-Ion batteries
Technical specification of coated carbon copper foil
 
     No.        Item       Standard    Testing
1 Cu purity % ≥99.8 ≥99.95
2 Penetration hole piece No No
3 Single-sided carbon coating quality g/㎡ Copper areal density +0.65 Copper areal density +0.65
4 Double-sided carbon coating quality g/㎡ Copper areal density +1.3 Copper areal density +1.3
5 Mass resistivity Ω.g/㎡ ≤0.17 0.168
6 Thickness tolerance um 1 1
7 Tensile strength kg/㎡ ≥30 35
8 Room temperature elongation % ≥3.5 4.2
9 High temperature elongation % ≥4.0 5.5
10 Roughness (RA) um ≥0.4 0.7
11 blank on both sides mm 15 15
12 Wrong position mm ≤1 0.1
13 Dyne dyne ≥40 55
14 Adhesion (3M tape tearing) OK OK
 
 Note: The specification value refers to IPC-4562, which is a general industry standard.