Patent Application Publication  Feb. 28, 2019 Sheet 3 of 13  US 2019/0067732 Al  FIG. 2(A)  A, Graphite particle  6. Graphite intercalation  ••  compound (GIC}  (  \  Rinsing {need 2,5 Kgs water/gram of GIC)  Drying  I  Second expansion step!  Exfo!iate GIC  (at a temperature of  900  ~  1050" C)  intensity shearing or  ultrasonication 