▎ 摘　　要

NOVELTY - Graphene has thickness of 3-6nanometer, specific surface area 150 meter and amount is more than 2 per gram. USE - Graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing Graphene, which involves: (A) preparing spherical graphite particle; (B) undergoing acidification to manufacture graphite intercalation compound; (C) drying to remove acid; (D) expanding the dried graphite intercalation compound and manufacturing the expanded graphite intermediate; and (E) peeling the expanded graphite intermediate to obtain graphene.