GRAPHENE COMPOSITES AND METHODS OF MAKING AND USING THE SAME

摘要

An graphene composites have reduced graphene oxide and a layered double-hydroxide distributed on the reduced graphene oxide. The composites may also include nanopores formed within the reduced graphene oxide and micropores that may be formed by the reduced graphene oxide. The composites may exhibit superior electrical and/or absorbent properties. Capacitor devices and electrodes containing the composites are also disclosed, as well as methods and systems configured to make and use the composites.

主权项

1. A method to make a graphene composite, the method comprising:
dispersing graphene oxide, particles, and a reductive agent in a first solution; reacting the graphene oxide in the first solution with the reductive agent in the first solution to obtain a first composition comprising a reduced graphene oxide and particles; reacting a chemical activation agent with the reduced graphene oxide in the first composition; removing at least a portion of particles from the first composition to obtain a second composition; heating the second composition under a reductive atmosphere to obtain a third composition; combining the third composition, a first salt comprising a divalent cation, and a second salt comprising a trivalent cation in a second solution; and heating the second solution under solvothermal conditions sufficient to obtain the graphene composite.