▎ 摘　　要

Electrochemical charge injection (ECI) is proved a powerful technique to maximize the available widen potential range of aqueous electrolyte. In this report, reduced graphene oxide/polymer dots (rGO/PDs) nanocomposites are prepared and tested as electrode materials for flexible supercapacitors. The weight ratio of GO/PDs plays an important role in the electrochemical performance of rGO/PDs nanocomposites. Through the ECI technique, a 1.7V output potential can be delivered by rGO/PDsbased flexible supercapacitors operating with 1 mol L-1 Na2SO4 aqueous electrolyte. A specific energy of 7.1Wh kg(-1) with corresponding specific power of 85Wkg(-1) can be achieved for a typical flexible supercapacitor, which exhibits a capacitance retention of 90.6% after 5000 cycles at 0.5 A g(-1). (C) 2018 Elsevier Ltd. All rights reserved.