MXene material has the advantages of flexible composition and high capacitance,which has attracted much attention in the field of supercapacitor energy storage.In this work,the poly(3,4-ethylenedioxythio-phene)/MXene(PEDOT/MXene)composite electrode material were synthesized via electrochemical method.Experimental results indicate that the specific capacitance of PEDOT/MXene reaches 250.21 mF/cm2 at a scan rate of 30 mV/s.With the current density increasing from 0.1 mA/cm2 to 5 mA/cm2,the specific capacitance retention of PEDOT/MXene achieves 83.5%,was much better than PEDOT(64.1%).Additionally,the initial specific capacitance of PEDOT/MXene still remains 84%over 1 000 cycles at a scan rate of 100 mV/s by CV method,exhibiting good rate performance and cycle stability.This work provides a new approach to construct high-performance energy storage interface with MXene-based materials.