High-capacitance hybrid supercapacitor based on multi-colored fluorescent carbon-dots

Abstract: Multi-colored, water soluble fluorescent carbon nanodots (C-Dots) with quantum yield changing from 4.6 to 18.3% were synthesized in multi-gram using dated cola beverage through a simple thermal synthesis method and implemented as conductive and ion donating supercapacitor component. Various properties of C-Dots, including size, crystal structure, morphology and surface properties along with their Raman and electron paramagnetic resonance spectra were analyzed and compared by means of their fluorescence and electronic properties. α-Manganese Oxide-Polypyrrole (PPy) nanorods decorated with C-Dots were further conducted as anode materials in a supercapacitor. Reduced graphene oxide was used as cathode along with the dicationic bis-imidazolium based ionic liquid in order to enhance the charge transfer and wetting capacity of electrode surfaces. For this purpose, we used octyl-bis(3-methylimidazolium)diiodide (C8H16BImI) synthesized by N-alkylation reaction as liquid ionic membrane electrolyte. Paramagnetic resonance and impedance spectroscopy have been undertaken in order to understand the origin of the performance of hybrid capacitor in more depth. In particular, we obtained high capacitance value (C = 17.3 μF/cm2) which is exceptionally related not only the quality of synthesis but also the choice of electrode and electrolyte materials. Moreover, each component used in the construction of the hybrid supercapacitor is also played a key role to achieve high capacitance value

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Scientific reports. 7 (2017), article numer 11222, DOI 10.1038/s41598-017-11347-1, issn: 2045-2322 ; IN COPYRIGHT http://rightsstatements.org/page/InC/1.0 rs

Classification and Topics

• Classification: Physik
• Keyword: Quantenpunkt

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2017
• Creator: Genc, Rukan ; Alas, Melis Ozge ; Harputlu, Ersan ; Repp, Sergej ; Kremer, Nora ; Castellano, Mike ; Erdem, Emre
• Contributor: Albert-Ludwigs-Universität Freiburg. Institut für Physikalische Chemie ; Albert-Ludwigs-Universität Freiburg. Fakultät für Chemie und Pharmazie ; Albert-Ludwigs-Universität Freiburg

Further information

• DOI: 10.1038/s41598-017-11347-1
• URN: urn:nbn:de:bsz:25-freidok-131097
• Rights: Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 25.03.2025, 1:52 PM CET