A new strategy to prepare N-doped holey graphene for high-volumetric supercapacitors

Abstract

N-doped holey graphene (N-HG) was successfully prepared by a novel “Bottom-up” strategy with scalable and low cost characteristics. The as-obtained N-HG possessed amounts of in-plane holes, a high specific surface area (1602 m² g⁻¹), a high nitrogen content and could be easily stacked to form a high density carbon monolith which presented a maximum volumetric capacitance of 397 F cm⁻³ for supercapacitors.