▎ 摘 要
NOVELTY - A graphene oxide comprises flat structured bottom layer, and convex portion containing graphene oxide formed on bottom layer. The convex portion has grain boundary containing metal. The total content of oxygen and carbon in the graphene oxide is 0.1-10 pts. wt. USE - Graphene oxide (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene oxide.