Patent ID: 11688848

Abstract:
Systems and methods for pulverization mitigation additives for silicon dominant anodes may include an electrode including a metal current collector and an active material layer on the current collector. The active material layer may include islands of material separated by cracks, where the islands may include silicon, pyrolyzed binder, and conductive additives. At least a portion of the additives bridge the cracks of the active material layer and the additives may include between 1% and 40% of the active material layer. The active material layer may include between 20% to 95% silicon. The conductive additives may include carbon nanotubes and/or graphene sheets. The conductive additives may include metal, such as one or more of: gallium, indium, copper, aluminum, lead, tin, and nickel. The metal may include a transition metal, and/or one or more semiconductors. The conductive additives may include long narrow filaments with an aspect ratio of 20 or greater.