Jump to main content
Jump to site search


Dual carbon-modified nickel sulfide composites toward high-performance electrodes for supercapacitors

Author affiliations

Abstract

Composites with reduced graphene oxide (rGO) modification or carbon-coated structures are usually constructed to enhance the electrochemical performance of electrode materials. Herein, we develop a sequential freeze-drying, calcination and sulfidation strategy to prepare dual carbon-modified nickel sulfide composites (Ni3S2@C/rGO). Owing to the ultrasmall particle size, stable structure and high electrical conductivity, the as-prepared composites exhibit enhanced performance with high specific capacitance (1023.44 F g−1 at a current density of 5 A g−1), good rate capability (848 F g−1 at a current density of 20 A g−1) and long-term cycling stability (70.1% retention over 5000 cycles) as electrode materials for supercapacitors. Moreover, the asymmetric supercapacitor displays a good cycle life and a superior energy density of 52.5 W h kg−1 at a power density of 750 W kg−1. The facile fabrication and excellent electrochemical performances of Ni3S2@C/rGO demonstrate that constructing dual carbon-modified composites is a promising strategy for high-performance electrode materials.

Graphical abstract: Dual carbon-modified nickel sulfide composites toward high-performance electrodes for supercapacitors

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Sep 2018, accepted on 19 Nov 2018 and first published on 20 Nov 2018


Article type: Research Article
DOI: 10.1039/C8QI01024B
Citation: Inorg. Chem. Front., 2019, Advance Article
  •   Request permissions

    Dual carbon-modified nickel sulfide composites toward high-performance electrodes for supercapacitors

    J. He, C. Guo, S. Zhou, Y. Zhao, Q. Wang, S. Yang, J. Yang and Q. Wang, Inorg. Chem. Front., 2019, Advance Article , DOI: 10.1039/C8QI01024B

Search articles by author

Spotlight

Advertisements