All-carbon hybrids for high performance supercapacitors

YÜKSEL R., Kaplan B. Y., Bicer E., Yurum A., Gursel S. A., ÜNALAN H. E.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH, vol.42, no.11, pp.3575-3587, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 11
  • Publication Date: 2018
  • Doi Number: 10.1002/er.4103
  • Journal Name: INTERNATIONAL JOURNAL OF ENERGY RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3575-3587
  • Keywords: carbon nanofibers, reduced graphene oxide, supercapacitors, DOUBLE-LAYER CAPACITOR, GRAPHENE OXIDE, ACTIVATED CARBON, ELECTRODE MATERIALS, ENERGY-STORAGE, ELECTROCHEMICAL PERFORMANCES, NANOWIRE NETWORK, HYDROGEN STORAGE, COMPOSITE, REDUCTION
  • Middle East Technical University Affiliated: Yes

Abstract

A hybrid nanostructure with partially reduced graphene oxide (rGO) and carbon nanofibers (CNFs) was fabricated and used as supercapacitor electrodes. A straightforward, environmentally friendly, and low-cost microwave-assisted reduction process was developed for the synthesis of rGO/CNF hybrid structures. The fabricated supercapacitor devices showed a specific capacitance of 95.3Fg(-1) and a superior long-term cycling stability. A capacitance retention of more than 97% after 11000 galvanostatic charge discharge cycles was obtained. These and other results reported in this paper indicate that high-rate, all-carbon, rGO/CNF hybrid nanostructures are highly promising supercapacitor electrode materials.