Supercapacitors with highly conductive graphene foam electrodes

摘要

The supercapacitor electrode comprises a solid graphene foam impregnated with a liquid or gel electrolyte wherein the solid graphene foam is comprised of a plurality of pores and a pore wall and the pore wall has essentially 0% Initial graphene material, or non-initial graphene material having from 0.001% to 5% by weight of non-carbon element, wherein the non-initial graphene material is graphene oxide, reduced graphene oxide, Wherein the solid graphene foam is selected from the group consisting of copper chloride, pin chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrided graphene, chemically graphene graphene, , A specific surface area of 50 to 3,200 m 2 / g, a thermal conductivity of at least 200 W / mK per specific gravity unit, and / or a thermal conductivity of 2,000 S / m 2 per specific gravity unit, cm / RTI .