Facile self-templating large scale preparation of biomass-derived 3D hierarchical porous carbon for advanced supercapacitors

Corn husk, a renewable biomass, has been successfully explored as a low-cost crude carbon source to prepare advanced higher-value 3D HPCs by means of KOH pre-treatment and direct pyrolysis, the synthesis route is simple, self-templating and easy to scale-up for industrialization.