Patent ID: 10164245

Abstract:
Methods for making a negative electrode material for use in an electrochemical cell, like a lithium ion battery, are provided. The electroactive material includes a functionalized surface having a grafted reactive group (e.g., an amino group, a carboxyl group, an anhydride group, and the like). The electrically conductive material includes a functionalized surface having a grafted reactive group (e.g., an amino group, a carboxyl group, and the like). The functionalized electroactive material and the functionalized electrically conductive material is admixed and reacted with at least one binder precursor having a reactive group (e.g., an amino group, an anhydride group, and the like). A porous solid electrode material is thus formed. Negative electrodes are also provided, which provide significant performance benefits and reduce the issues associated with capacity fade, diminished electrochemical cell performance, cracking, and short lifespan associated with conventional silicon anode materials.