An Ultra-microporous Carbon Material Boosting Integrated Capacitance for Cellulose-Based Supercapacitors

An ultra-microporous carbon material simultaneously with high specific surface area (1554 m 2  g −1 ) and packing density (1.18 g cm −3 ) is designed and fabricated. The resulting carbon material integrates the high gravimetric and volumetric capacitance (430 F g −1 and 507 F cm −3 at 0.5 A g −1 ) and thereof provides the robust all-solid-state cellulose supercapacitor with high areal and volumetric density.