Facile Fabrication of Porous Carbon Materials Derived from Pleurotus Eryngii for Supercapacitor Electrodes

Porous carbon materials derived from pleurotus eryngii were successfully synthesized by carbonization and activation. The specific surface area of the obtained porous carbons reached up to $3255\,\,\mathrm {m}^{2}\, \mathrm {g}^{-1}$. The electrode exhibited a maximal specific capacitance of $236\,\,\mathrm{Fg}^{-1}$ and excellent long-term cycle stability with 94% capacitance retention after 6000 cycles at the current density of $2\,\,\mathrm{Ag}^{-1}$. Therefore, pleurotus eryngii is demonstrated as an attractive biomass precursor of carbon materials for supercapacitor applications.