1、Good wettability, low roughness.
2、Smooth on both sides, with good tensile strength elongation performance.
Lithium Ion Battery
type | ProconpullFor lithium batteriesCopper foil | testing instrument | |||||||||||
copper thickness | 4µm | 4.5µm | 5µm | 6µm | 7µm | 8µm | 9µm | 12µm | 15µm | 18µm | 20µm | ||
Mass per unitg/m² | 35-38 | 39-42 | 43-46 | 50-55 | 60-65 | 70-75 | 85-90 | 100-105 | 128-133 | 155-160 | 175-180 | electronic balance | |
tensile strength(kg/mm²) | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | ≥30 | Tensile testing machine | |
Elongation rate(%) | ≥2.0 | ≥2.0 | ≥2.5 | ≥3.0 | ≥3.0 | ≥4.0 | ≥4.0 | ≥5.0 | ≥6.0 | ≥8.0 | ≥8.0 | Tensile testing machine | |
Mechanical thickness(µm) | 0,+1 | 0,+2 | 0, +3 | micrometer | |||||||||
Surface roughness (µm) | Smooth surface | Rz≤3.0 ( perhapsRa≤0.3,firstRz) | Roughness tester | ||||||||||
matte side | Rz≤3.0 | Roughness tester | |||||||||||
Wettability | ≥36dyne | dyne pen | |||||||||||
oxidize resistance | 140±2℃ /15min No visible discoloration or oxidation after baking | Constant temperature baking | |||||||||||
chemical composition(%): Cu≥ 99.8% (Cu+Ag) | Wide tolerance(MM) :± 1MM | tape measure |