▎ 摘　　要

In this study, a novel polypyrrole (PPy)/reduced graphene oxide (rGO)/lead dioxide (PbO2) nanocomposite (PGPb) has been successfully fabricated by a one pot cathodic electrodeposition method for the first time and characterized systematically. The fabricated electrode exhibited an enhanced electrochemical capacitance of 514 F g(-1) and a capacitance retention of 86% even after 4000 cycles at a current density of 1 A g(-1). The enhanced specific capacitance, rate capability, and cycling performance are ascribed to the rapid transferring path for electrons and ions and the structural integrity and stability endowed by synergy. (C) 2020 Elsevier B.V. All rights reserved.