Banana peel biomass-derived carbon and nitrogen-doped quantum dot/UiO-66 hybrid nanocomposites for high-performance asymmetric supercapacitors
Hyväksytty kirjoittajan käsikirjoitus - 1.65 MB
Abu Hassanisazin, N. I. A., Siva Kumar, H., Shamsudin, S. A., Omar, F. S. & Manfo, T. A. (2026). Banana peel biomass-derived carbon and nitrogen-doped quantum dot/UiO-66 hybrid nanocomposites for high-performance asymmetric supercapacitors. Journal of power sources, 691. https://doi.org/10.1016/j.jpowsour.2026.240975
© 2026 Authors. This self-archived version has been made available under the organisation's prior license model and under the Creative Commons Attribution (CC BY 4.0) licence.
Pysyvä osoite
Kuvaus
Tämä rinnakkaistallennettu versio on avattu organisaation esilisensiointimallilla. Denna parallellpublicerade version har gjorts tillgänglig enligt organisationens modell för förhandslicensiering. This self-archived version has been made available under the organisation's prior license model.
Supercapacitors are promising energy storage devices, yet their wide application is limited by low energy density. Similarly, UiO-66, a zirconium-based metal–organic framework (MOF), possesses a high surface area but suffers from poor electrical conductivity. To overcome these limitations, nitrogen-doped carbon quantum dots (NCQDs) derived from banana peel biomass were synthesised via a green hydrothermal approach and embedded into the UiO-66 framework. This integration preserved the MOF's structural integrity while the introduced nitrogen functionalities enhanced interfacial interactions, electrical conductivity and electron-transfer pathways. Consequently, the UiO-66/NCQDs hybrid exhibited lower charge-transfer resistance and superior redox activity compared with pristine UiO-66 and UiO-66/CQDs. In an asymmetric supercapacitor assembled with activated carbon, the hybrid electrode delivered a specific energy of 30.32 Wh kg−1 at a power density of 2449.38 W kg−1, retaining 93.45% of its capacitance after 4000 cycles. These findings demonstrate a sustainable strategy for engineering high-performance, biomass-derived MOF/QD energy storage devices.
Emojulkaisu
ISBN
ISSN
1873-2755
0378-7753
0378-7753
Aihealue
Kausijulkaisu
Journal of power sources|691
OKM-julkaisutyyppi
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä (vertaisarvioitu)