Nanophase Ru–RuO2 composites decorated on wrinkled Nb-doped TiO2 nanofibers for electrochemical capacitors

Nanophase Ru–RuO2 composites decorated on wrinkled Nb-doped TiO2 nanofibers for electrochemical... Here, we studied nanophase Ru–RuO2 composites decorated on wrinkled Nb-doped TiO2 (NTO) nanofiber (NF) supports for electrochemical capacitors. These compositions were synthesized by an electrospinning method and an impregnation method. To investigate the electrochemical performance of electrochemical capacitors, 20 wt% nanophase Ru–RuO2 composites were decorated on wrinkled NTO NF supports doped with three different amounts of Nb. The structural, morphological, chemical, and electrochemical properties of the composite nanophases were investigated using field emission scanning electron microscopy, transmission electron microscopy, Brunauer–Emmet–Teller analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and cyclic voltammograms (CVs). The CV results indicated that the nanophase Ru–RuO2 composites decorated on the wrinkled NTO NFs possessed superior capacitance (~496.3 F/g at 5 mV/s) and good high-rate capacitance because of the synergistic effect of the increased specific surface area of the wrinkled NTO NF supports and the presence of the nanophase Ru–RuO2 composites. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Nanophase Ru–RuO2 composites decorated on wrinkled Nb-doped TiO2 nanofibers for electrochemical capacitors

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Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1567-z
Publisher site
See Article on Publisher Site

Abstract

Here, we studied nanophase Ru–RuO2 composites decorated on wrinkled Nb-doped TiO2 (NTO) nanofiber (NF) supports for electrochemical capacitors. These compositions were synthesized by an electrospinning method and an impregnation method. To investigate the electrochemical performance of electrochemical capacitors, 20 wt% nanophase Ru–RuO2 composites were decorated on wrinkled NTO NF supports doped with three different amounts of Nb. The structural, morphological, chemical, and electrochemical properties of the composite nanophases were investigated using field emission scanning electron microscopy, transmission electron microscopy, Brunauer–Emmet–Teller analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and cyclic voltammograms (CVs). The CV results indicated that the nanophase Ru–RuO2 composites decorated on the wrinkled NTO NFs possessed superior capacitance (~496.3 F/g at 5 mV/s) and good high-rate capacitance because of the synergistic effect of the increased specific surface area of the wrinkled NTO NF supports and the presence of the nanophase Ru–RuO2 composites.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Mar 11, 2014

References

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