Copper Lumafoil™ is a conductive, lightweight, porous membrane technology to replace the conventional solid copper foil current collector in lithium ion batteries. This product is designed to be a direct replacement for the solid copper foil used in most of today’s batteries with up to 70% reduction in current collector weight. The manufacture of the Lumafoil™ has been demonstrated on a roll-to-roll basis, with trials successfully applying a graphite layer to LumafoilTM to produce complete anodes for use in lithium ion batteries.
Copper Lumafoil™, uses a highly conductive coating of copper applied to the entire internal and external surface of the porous substrate. The high conductivity and defined amount of porosity make the Lumafoil™ uniquely suited for the use as the current collector in a lithium ion battery.
The Copper Lumafoil™ structure enables faster electrolyte wetting and improved active material adhesion
- Reduction of current collector weight by up to 70%, increasing energy density
- Faster electrolyte wetting resulting in a reduction of the cell assembly cost by up to 12%
- Improved cycle life of active materials through better active material adhesion
- Advantages of through porosity leading to extended cycle life