In-situ growth of N-doped graphene-like carbon/MOF nanocomposites for high-performance supercapacitor

Graphene-like materials and metal-organic framework (MOF) materials hold significant promise for advanced energy systems. However, the accumulation of two-dimensional (2D) material and the low conductivity of MOF have seriously affected their practical application. The universal method for synthesizing homogeneous nitrogen-doped graphene-like carbon/metal-organic framework (N-GLC/MOF) composites, including N-GLC/MOF-74, N-GLC/ZIF-8, N-GLC/Cu-BTC, and N-GLC/FeCo-PBA was presented. Thanks to the synergistic effect of the two components, the N-GLC/MOF-74 composite exhibits a specific capacitance of 470.18 F/g at 1 A/g and maintains a coulombic efficiency of 95.04 % at 5 A/g over 5500 cycles. Our work lays a solid foundation for the design and synthesis of N-GLC-based composites. We anticipate that this research will furnish valuable insights for the advancement of N-GLC/MOF composites, with a primary focus on enhancing supercapacitor performance.