Literatur vom gleichen Autor/der gleichen Autor*in
plus bei Google Scholar

Bibliografische Daten exportieren
 

Supercapacitors based on hybrid carbon nanofibers containing multiwalled carbon nanotubes

Titelangaben

Guo, Qiaohui ; Zhou, Xiaoping ; Li, Xiaoyan ; Chen, Shuiliang ; Agarwal, Seema ; Greiner, Andreas ; Hou, Haoqing:
Supercapacitors based on hybrid carbon nanofibers containing multiwalled carbon nanotubes.
In: Journal of Materials Chemistry. Bd. 19 (2009) Heft 18 . - S. 2810-2816.
ISSN 1364-5501
DOI: https://doi.org/10.1039/B820170F

Abstract

Hybrid carbon nanofibers containing multiwalled carbon nanotubes (CNTs) were produced by electrospinning CNTs suspended in a solution of polyacrylonitrile in N,N-dimethylformamide, followed by carbonization and activation using a hydroperoxide-water steam mixture at 650 degrees C. Transmission electron microscopy and scanning electron microscopy were used to observe the morphology of the CNT-embedded carbon nanofibers. The specific surface area of the nanofibers was measured using the Brunauer-Emmett-Teller method. The electrochemical properties of the nanofibers were characterized by cyclic voltammetry and galvanotactic charge/discharge in 1MH(2)SO(4) electrolyte. The specific capacitance of electric double-layer capacitors containing CNT-embedded carbon nanofibers as electrodes reached 310 F g(-1), which is almost double that obtained for capacitors containing virgin carbon nanofibers as electrodes. The CNTs embedded in the carbonized electrospun nanofibers provide improved conductive pathways for charge transfer in the electrodes and therefore lead to a significantly enhanced specific capacitance.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: ELECTROCHEMICAL STORAGE; POLYMER NANOFIBERS; POLYACRYLONITRILE; FIBERS; WEBS; ELECTRODES; ENERGY; PITCH
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 08 Apr 2015 12:09
Letzte Änderung: 07 Jul 2022 10:37
URI: https://eref.uni-bayreuth.de/id/eprint/9608