Patent ID: 11955623
Assignee: ENEVATE CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  C  Y | IPC B  C  H

Claim 14:
15. A method of forming a battery cell, the method comprising:
forming an anode of the battery cell, the anode comprising silicon particles and a composite material, wherein the forming comprises:
providing a mixture comprising:
polyimide or a polyimide precursor;
silicon particles; and
graphite particles; and

pyrolysing the mixture to convert the polyimide or the polyimide precursor into one or more carbon phases to form the composite material such that:
the one or more carbon phases comprises hard carbon that is 10% to 25% by weight of the composite material and holds together the composite material, and
the silicon particles are between 50% and 90% by weight of the composite material distributed throughout the one or more carbon phases; and

separating the anode from a cathode of the battery cell with a separator and electrolyte of the battery cell.