▎ 摘　　要

NOVELTY - The extraction and separation method of graphene involves adding graphene mixed solution to deionized water and then mixing, centrifuging the mixture and then filtering, drying the filtrate for 4-8 hours and then sintering at 80-200 degrees C, extracting the mixture and then placing in a gradient separation medium, centrifugally separating the mixture and then filtering, processing the filtrate, and drying. USE - The method is useful for extraction and separation of graphene (claimed).