Enovix 3D Silicon - Lithium-ion Cell

Silicon’s high energy density, however, creates four significant technical problems that Enovix has solved:

1. First Charge Expansion : Enovix cells have a stainless-steel constraint system surrounding the cell that limits the battery from swelling. We also reorient the electrodes to face a small side of the battery to decrease the required constraining force.
2. First Charge Efficiency : Enovix has developed a “pre-lithiation” process during manufacturing to insert additional lithium source to top-off lithium trapped at formation. Our batteries can do this practically because the additional lithium only needs to travel a short distance in our 3D architecture to permeate the anode.
3. Cycle Swelling :  Enovix manages swelling as a result of cycling with its integrated constraint, limiting swelling to as little as
4. Cycle Life : The Enovix integrated constraint keeps particles under constant stack pressure, limiting particles from electrically disconnecting and cracking.