Colak, T.O.Altaf, C.T.Yesilbag, F.N.T.Yesilbag, Y.O.Yildirim, I.D.Demirci Sankır, NurdanSankır, Mehmet2024-04-202024-04-2020242352-152Xhttps://doi.org/10.1016/j.est.2024.111274https://hdl.handle.net/20.500.11851/11527Photo-supercapacitors (PSCs) have great potential as devices that enable both the conversion and storage of solar energy. However, it remains challenging to design new dual-acting electrodes providing high energy density and capacitance with self-powering capacity. Herein, we successfully prepared dual electrodes using ZnO-nanoflake and Ti3C2Tx-based MXene paper. By utilization of the MXene to the PSC device, capacitive contribution to the total capacitance increased ∼4 times compared to the bare ZnO-nanoflake-based PSC due to the surface redox reactions and electrically double layer formation. Maximum energy and power density of 57.3 μWhcm−2 and 11.1 mWcm−2, respectively were obtained for ZnO/MXene//MXene-PSC@UV irradiation and at a 2.5 V. Areal capacitance of this device calculated from CV was as high as 151.5 mFcm−2. Moreover, the ZnO/MXene//MXene-PSC device was highly stable over 10,000 GCD cycles with 100 % CE and 98 % Cp-retention under daylight. © 2024 Elsevier Ltdeninfo:eu-repo/semantics/closedAccessMXenePhoto-supercapacitorSolar energyZinc oxideCapacitanceElectrodesII-VI semiconductorsIrradiationRedox reactionsSolar energySurface reactionsZinc oxideDouble layer formationDual electrodesEnergy densityHigher energy densityMaximum powerMxenePhoto-supercapacitorPower densitiesSelf-poweringZnO nanoflakesSupercapacitorArticle2-s2.0-8518866926610.1016/j.est.2024.111274