▎ 摘　　要

In this paper, flexible MXene/graphene composite electrodes were successfully fabricated by inkjet printing process using printable graphene-modified MXene-based ink. The results show that the interlayer spacing in the printed MXene-based composite films is increased through the insertion of graphene nanosheets, which effectively reduces the self-stacking effect of MXene. The printed MXene/1 wt% graphene composite electrodes exhibit excellent stability with 89% resistance retention at a 180 degrees bending angle, high volumetric capacitance of 183.5 F cm(-3) at a scanning speed of 5 mV s(-1), and long cycle life with 75% capacitance retention after 3000 charge-discharge cycles. Moreover, a flexible supercapacitor based on those electrodes demonstrates a competitive energy density of 0.53 mu Wh cm(-2) at a power density of 10 mu W cm(-2), which provides prospects for the design of next generation flexible and wearable energy storage devices. (C) 2021 Published by Elsevier B.V.