Patent ID: 7597999
Filing Date: 2009-10-06
Classification: C01B,H01M,Y02E

Abstract:
1. A method for the production of carbon particles comprising: (a) selecting a precursor material, wherein the precursor material is an uncalcined petroleum coke, an uncalcined coal tar coke, a high molecular weight pitch, a high molecular weight tar, or combinations thereof; (b) sizing said precursor material; (c) stabilizing said precursor material; (d) carbonizing said precursor material; and (e) graphitizing said precursor material, wherein the precursor material when selected has a volatile matter content of from about 5 wt. % to about 60 wt. % and the sizing produces sized particles that remain uncoated during the stabilizing, carbonizing, and graphitizing to form the carbon particles capable of achieving at least 91% first cycle coulombic efficiency when used as electrode material.