▎ 摘　　要

To meet the rapid development of flexible supercapacitors with both high energy density and power density, hybrid ion capacitors like lithium and sodium ion capacitors have attracted more and more at-tention. However, the hidden danger associated with the using of organic electrolytes limit their practical application. In this regard, a new configuration flexible zinc-ion hybrid supercapacitor (ZHSC) based on free-standing films of RGO-V2O5 (RGV) battery-type cathode and RGO-MXene (RGM) capacitor-type anode in aqueous electrolyte has been designed. The RGM/RGV system consists of specific layered structure, short ion diffusion pathway, high electrical conductivity and exceptional structural stability. As a result, the ZHSC based on RGM/RGV exhibits excellent electrochemical performance, including a large specific capacity of 175 F g-1 at 0.5 mV s-1, a maximum energy density up to 107.2 Wh kg-1 (321.6 W kg-1) and a high capa-citance retention of 81% of its initial capacitance (10,000 cycles). Additionally, the ZHSC displays a high specific capacity of 125 F g-1 at 0.5 mV s-1 even in an aqueous gel electrolyte. More importantly, super -capacitors based on the composite films exhibit stable flexibility electrochemical performance. The in-vestigation provides an essential strategy to synthesize composite films for application in high performance flexible hybrid supercapacitors.(c) 2022 Elsevier B.V. All rights reserved.