From flour to honeycomb-like carbon foam: Carbon makes room for high energy density supercapacitors

Interconnected honeycomb-like porous carbon foam (HPC) is prepared by a one-step carbonization of alkali-treated wheat flour. As a result, the as-obtained carbon processes 3-D interconnected porous structure with high specific surface area, narrow pore size distribution and interconnected pore network, resulting in high specific capacitance, excellent rate performance and cycling stability.354