3D honeycomb-like carbon foam synthesized with biomass buckwheat flour for high-performance supercapacitor electrodes

Abstract

A facile, one-step carbonization of buckwheat flour is innovated to synthesize honeycomb-like porous carbon, which exhibits specific capacitance (767 F g⁻¹ at 1 A g⁻¹) and stability with a retention of up to 92.6% after 10 000 cycles.