Speaker
Description
Ti3C2:CuO quantum dot composites with different mass ratios (1:0.5, 1:1, and 1:2) were successfully synthesized by hydrofluoric acid etching of Ti3AlC2 (MAX phase) to obtain Ti₃C₂ MXene, followed by sonication-assisted intercalation of CuO quantum dots. The incorporation of CuO quantum dots effectively suppressed MXene restacking, improved ion accessibility, and introduced additional redox-active sites, leading to enhanced electrochemical performance. Among the investigated composites, the Ti3C2: CuO (1:1) sample exhibited the highest specific capacitance of 108.1 F g⁻¹ in a three-electrode configuration, outperforming pristine Ti3C2, which delivered 74.2 F g⁻¹ in 1 M H2SO4 electrolyte. Furthermore, an asymmetric supercapacitor device was fabricated using Ti3C2: CuO (1:1) as the negative electrode and human hair-derived activated carbon as the positive electrode, delivering a high coulombic efficiency of 94.8%, excellent cycling stability with 82.6% capacitance retention after 10,000 cycles, a specific energy of 5.4 Wh kg⁻¹, and a power density of 410 W kg⁻¹ at 1 A g⁻¹. These results demonstrate the synergistic advantages of CuO quantum dot intercalation and highlight the potential of Ti3C2: CuO composites as promising electrode materials for high-performance supercapacitor applications.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |