All-in-one supercapacitors with high performance enabled by Mn/Cu doped ZnO and MXene

Ammar, Ameen Uddin and Bakan Mısırlıoğlu, Feray and Aleinawi, Mohamad and Franzo, Giorgia and Condorelli, Guglielmo Guido and Yesilbag, Fatma Nur Tuzluca and Yesilbag, Yasar Ozkan and Mirabella, Salvo and Erdem, Emre (2023) All-in-one supercapacitors with high performance enabled by Mn/Cu doped ZnO and MXene. Materials Research Bulletin, 165 . ISSN 0025-5408

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Here, we report the development of high-performance supercapacitor devices using manganese-doped zinc oxide nanowires (Mn-doped ZnO NWs) and copper-doped zinc oxide nanoparticles (Cu-doped ZnO NPs) as a positive electrode with MXene as a negative electrode. Both transition metal (TM)-based electrodes were used separately with MXene, and the performance was tested. When used in combination with MXene as a second electrode, TM-ZnO samples displayed a major increase in the supercapacitors’ performance. The highest-performance supercapacitor recorded values of 151 F/g specific capacitance along with 84 Wh/kg energy density and a power density of 75 kW/kg. Electron paramagnetic resonance and photoluminescence spectroscopy of Mn/Cu-doped ZnO reveals intrinsic and extrinsic defect signals, which were discussed and attributed to the enhancement of the capacitive performance. The presence of the aforementioned defects optimizes the intrinsic properties and boosts the reaction kinetics, thus providing increased electrochemical activity and superior supercapacitor device performance.
Item Type: Article
Divisions: Faculty of Engineering and Natural Sciences
Sabancı University Nanotechnology Research and Application Center
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Emre Erdem
Date Deposited: 06 Aug 2023 17:45
Last Modified: 06 Aug 2023 17:45

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