A novel synthesis of hierarchical porous carbons(HPCs) with 3D open-cell structure based on nanosilicaembedded emulsion-templated polymerization was reported.An oil-in-water emulsion containing SiO_2colloids was fabricated using liquid paraffin as an oil phase,resorcinol/formaldehyde and silica sol as an aqueous phase,and Span 80/Tween 80 as emulsifiers.HPCs with macropore cores,open meso/macropore windows,and abundant micropores were synthesized by the polymerization and carbonization of the emulsion,followed by scaffold removal and further KOH activation.A typical HPCs sample as supercapacitor electrode shows the charge/discharge capability under large loading current density(30 A/g) coupling with a reasonable electrochemical capacitance in KOH electrolyte solution. A novel synthesis of hierarchical porous carbons (HPCs) with 3D open-cell structure based on nanosilica embedded emulsion-templated polymerization was reported. An oil-in-water emulsion containing SiO 2 colloids was fabricated using liquid paraffin as an oil phase, resorcinol / formaldehyde and silica sol as an aqueous phase, and Span 80 / Tween 80 as emulsifiers. HPCs with macropore cores, open meso / macropore windows, and abundant micropores were synthesized by the polymerization and carbonization of the emulsion, followed by scaffold removal and further KOH activation. A typical HPCs sample as supercapacitor electrode shows the charge / discharge capability under large loading current density (30 A / g) coupling with a reasonable electrochemical capacitance in KOH electrolyte solution.