Dexmet has introduced new microgrid anode and cathode foil materials down to 25 micron (.001″) in both aluminum and copper at widths up to 305mm (12″).
These thinner materials produce very small openings in the material, and should prove to be the perfect anode and cathode electrode solution for improved overall cell performance.
As an alternative to solid foils, these open area expanded materials will require less binder to adhere the active material to the electrode surface.
The reduction in binder will result in better ion and electron flow for better rate capability and quicker recharge cycles.
In addition, the volumetric reduction of binder is offset by more active material resulting in better energy density within the cell.
Using an open area expanded product also improves the thermal properties of a cell by reducing the internal heat generated during the charge and discharge cycles, which plague so many of the current lithium ion designs today, creating an improvement in the overall life expectancy of the battery.