Poly　(3,4-ethylenedioxythiophene)　(PEDOT)　is　an　electrically　conductive　polymer　that　is　highly　conductive　and　oxidatively　stable.　However,　its　poor　cycling　stability　and　small　specific　capacitance　limit　its　application　as　an　electrode　material　for　supercapacitors.　In　this　work,　carbon　nanotubes　(CNTs)　modified　V-Ti3C2Tx/poly(3,4-ethylenedioxythiophene)　composite　(CVT/PEDOT)　was　prepared　by　obtaining　vanadium-doped　Ti3C2Tx　(V-Ti3C2Tx)　using　a　simple　hydrothermal　method,　and　then　polymerizing　3,4-ethylene-dioxythiophene　monomers　(EDOT)　on　the　surface　of　carbon　nanotubes　modified　V-Ti3C2Tx.　The　incorporation　of　CNTs　with　V-Ti3C2Tx　results　in　better　stability　of　CVT/PEDOT.　The　synergistic　effect　of　the　three　components　make　the　CVT/PEDOT　composite　have　good　electrochemical　performance　and　excellent　cycling　stability　as　an　electrode　material　for　supercapacitor.　The　specific　capacitance　of　CVT/PEDOT　at　a　current　density　of　1　A　g−1　is　up　to　263　F　g−1,　and　the　capacitance　retention　is　86　%　after　5000　cycles　at　a　current　density　of　10　A　g−1,　which　is　superior　to　that　of　the　V-Ti3C2Tx/PEDOT　composite.　The　energy　density　of　CVT/PEDOT　is　15.26　Wh　kg−1　at　a　power　density　of　600　W　kg−1,　which　is　higher　than　those　of　previously　reported　PEDOTs　and　other　PEDOT-based　composites.　So,　the　CVT/PEDOT　composite　can　be　a　potential　candidate　for　electrode　materials　of　supercapacitor.　©　2024　Elsevier　B.V.