High Dyne Aluminum Foil Roll with High Adhesivity as Battery Cathode Current Collector, 1 kg or 3 kg/roll, CBCCCHDAFR
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High dyne aluminum foil is specifically engineered to have high surface tension, which is essential for ensuring that active material slurries adhere strongly to the current collector. When the dyne value of the foil is significantly higher than the surface tension of the coating slurry, the liquid "wets out" or spreads evenly rather than beading up. "High Dyne" foils often target 34–38 dynes/cm, with some specialized etched foils reaching 66 dynes/cm. The main benefits of high dyne aluminum foil are:
(1) Improved Adhesion: Prevents the active material from peeling or flaking during the repeated expansion and contraction of the battery during charging cycles.
(2) Reduced Internal Resistance: A better physical bond between the coating and the foil ensures more efficient electron transport, lowering the cell's internal resistance.
(3) Uniform Coating: High surface energy allows for a thinner, more consistent layer of active material, which is vital for high-energy-density cells.
(4) High-Rate Performance: Better interface contact supports faster charge and discharge rates without degrading the battery structure
| Part Number |
CBCCCHDAFR (C-BCCC-HDAFR) |
| Dimension |
T 12um * W 180mm, 1 kg or 3 kg/roll |
| Area Density |
35.2 g/m2 |
| Resistivity |
2 mΩ |
| Tensile Strength |
~200 MPa |
| Elongate Percentage |
2.5% |
| Surface Wetting Tension |
≥66 dynes/cm |
| Cardboard Dia. of Roll |
3" |
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