Jump to main content
Jump to site search


Immobilization of tungsten disulfide nanosheets on active carbon fibers as electrode materials for high performance quasi-solid-state asymmetric supercapacitors

Author affiliations

Abstract

The design and fabrication of electrode materials with multidimensional and multifunctional structures have been the key challenge for high-performance asymmetric supercapacitors. Herein, a novel tungsten disulfide/active carbon fiber nanocomposite was synthesized through electrospinning, one-pot carbonization, activation, and a subsequent hydrothermal method. An active carbon fiber with a diameter of about 300 nm is uniformly coated with tungsten disulfide nanosheets with a thickness of 15 nm. Such a nanocomposite exhibits a high capacitance of 600 F g−1 (3108 F cm−3) at 1 A g−1 in 1 mol L−1 KOH. Moreover, the as-fabricated quasi-solid-state asymmetric supercapacitor achieves an appreciable capacitance up to 237.7 F g−1 (514.1 F cm−3) at 1 A g−1 in polyvinyl alcohol/potassium hydroxide gel electrolyte. The excellent electrochemical performance is attributed to the synergetic effects between the thin tungsten disulfide nanosheets with a higher number of active sites and the active carbon fiber with high conductivity. Therefore, it is believed that this novel nanocomposite may shed some light on future electrode design for asymmetric supercapacitors.

Graphical abstract: Immobilization of tungsten disulfide nanosheets on active carbon fibers as electrode materials for high performance quasi-solid-state asymmetric supercapacitors

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 Jan 2018, accepted on 27 Mar 2018 and first published on 27 Mar 2018


Article type: Paper
DOI: 10.1039/C8TA01047A
Citation: J. Mater. Chem. A, 2018, Advance Article
  •   Request permissions

    Immobilization of tungsten disulfide nanosheets on active carbon fibers as electrode materials for high performance quasi-solid-state asymmetric supercapacitors

    X. Qiu, L. Wang and L. Fan, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA01047A

Search articles by author

Spotlight

Advertisements