One-pot synthesis of 3D framework graphene via electrochemical method

A one-pot approach of producing three-dimensional (3D) framework graphene was reported. The proposed method is based on exfoliation and reduction of graphite oxide in electrochemical reaction using pulse wave. The formation mechanism of 3D framework graphene has been investigated. The results show that graphene dendrite firstly found in our article were used as building blocks, the growing evolution of which might follow the pattern of deposition of the diffusion-limited aggregation (DLA). The flexible graphene dendrite in different structural levels overlapped or coalesced with each other, resulting in formation of cross-linking 3D framework ultimately. The 3D framework graphene as an electrode material exhibits high specific capacitance (140 F/g at 5 A g−1) in an aqueous electrolyte.