Patent ID: 9309124
Filing Date: 2016-04-12
CPC Classification: B01J,B82Y,C01B,H01L,H01M,Y02E,Y02P,Y10S,Y10T

Claim Text:
1. A method of forming graphene, comprising: providing a graphite sample having atomic layers of carbon with spaces in between; immersing the graphite sample in an electrolytic solution of propylene carbonate and lithium perchlorate; performing electrolysis on the immersed graphite sample to introduce organic complexes of lithium ions and propylene carbonate into the spaces between the atomic layers to form intercalated graphite; subjecting the intercalated graphite to a thermal treatment that expands the space between the atomic layers to form expanded graphite; and separating the atomic layers using sonication to form one or more sheets of graphene.