Enhancement of the photoelectrochemical production of hydrogen peroxide under intermittent light supply in the presence of an optimized biochar supercapacitor

A photocatalytic fuel cell has been used to convert light into electricity and photoelectrochemically produce hydrogen peroxide by reduction of atmospheric oxygen. An energy storage functionality was added this introducing a supercapacitor electrode functioning with the electrolyte. When operated intermittent supply, production much smaller than under continuous illumination; however in presence supercapacitor, substantially larger demonstrating its importance practical applications. The loaded biochar obtained pyrolysis spent malt rootlets limited oxygen supply. further subjected mild treatment boiling suspension pure or alkaline water. Both untreated mild-treated extensively characterized several techniques. It shown that even can lead substantial leaching minerals part organic residues giving materials specific surface resulting higher supercapacitance values.