▎ 摘　　要

A simple, scalable approach is developed to fabricate a flexible hybrid paper electrode composed of the polyaniline/graphene and the carbon fiber (CF)-reinforced bacterial cellulose. The prepared hybrid paper presents high areal capacitance of 4.145Fcm(-2) at 5mAcm(-2) and an extremely low sheet resistance of 29.7sq.(-1). The CF endows the paper electrode remarkable foldability with no mechanical destruction. Even after being repeatedly bent 180 degrees up to 1000 times, the initial capacitance can be retained up to 98%. A fabricated all-solid-state supercapacitor based on the resulting paper electrode has an excellent areal capacitance of 630mFcm(-2) and energy density of 2.8 mWhcm(-3). The results confirm that this approach can fabricate the highly foldable and shape-tailorable energy storage devices and may have wide potential applications.