Graphene-based ordered mesoporous carbon hybrids with large surface areas for supercapacitors

Abstract

Ordered mesoporous carbon/graphene hybrids (OMCGs) with large specific surface areas (1795 m² g⁻¹) have been firstly synthesized by the direct self-assembly of soluble phenolic resin, an F127 triblock copolymer and tetraethyl orthosilicate (TEOS) on the surface of graphene oxide. The resulting OMCG electrode shows an advanced specific capacity of 330 F g⁻¹, a high energy density of 38.1–32.3 W h kg⁻¹ and a power density of 6.1–61.1 kW kg⁻¹, and long cycle life.