4.6 Article

Facile and controllable construction of vanadium pentoxide@conducting polymer core/shell nanostructures and their thickness-dependent synergistic energy storage properties

期刊

ELECTROCHIMICA ACTA
卷 222, 期 -, 页码 194-202

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.09.098

关键词

Metal oxides; conducting polymer; core/shell; thickness-dependent synergy; energy storage

资金

  1. National Natural Science Foundation of China [51572058, 91216123, 51174063, 51502057]
  2. Natural Science Foundation of Heilongjiang Province [E201436]
  3. International Science & Technology Cooperation Program of China [2013DFR10630, 2015DFE52770]
  4. Specialized Research Fund for the Doctoral Program of Higher Education [20132302110031]
  5. Scientific Research Fund of Liaoning Provincial Education Department [L2014516]

向作者/读者索取更多资源

Thickness-and morphology-controlled vanadium pentoxide/polyaniline (V2O5/PANI) core/shell hybrid nanofibers are fabricated by electropolymerization of PANI on V2O5 nanofibers for enhanced energy storage. By simply adjusting the electrodeposition time, the thickness of the PANI shells can be controlled from 5 nm to 47 nm, and the morphology can be changed from coaxial to branched. The influence of shell thickness on the improved Li-ion storage performance of the V2O5/PANI core/shell nanofibers is systematically investigated, and this enhancement of charge capability and cycling stability strongly varies with the shell thickness. Thickness-dependent synergistic electron transport, Li-ion diffusion distances, and shell mechanical strength mechanisms are also proposed. These results provide meaningful references for developing new functional core/shell materials and high-performance energy storage composite materials. (C) 2016 Published by Elsevier Ltd.

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