| abstract |
【Task】 A highly conductive and highly dispersible graphene powder is produced. Further, in order to obtain an electrode for a lithium ion battery having good output characteristics and cycle characteristics by using highly conductive and highly dispersible graphene, a graphene powder and a manufacturing method thereof are provided. [Solution] The compound having a catechol group is attached to the surface of graphene in an amount of 5 to 50% by weight with respect to graphene, and the element ratio of oxygen to carbon measured by X-ray photoelectron spectroscopy is 0.06 or more and 0.20 or less. Is a graphene powder. The present invention also relates to a method for producing graphene powder, which includes a step of reducing graphite oxide using a reducing agent having no catechol group in the presence of a compound having a catechol group. [Selection figure] None |