Jump to main content
Jump to site search


Nitrogen-doped carbon nanotube supported double-shelled hollow composites for asymmetric supercapacitors

Author affiliations

Abstract

In this work, a unique N–C@NiMoO4 composite with a double-shelled hollow microtube structure has been developed through a simple and low-cost growth process. The composite contains a NiMoO4 outer shell with high electrochemical activity and hollow nitrogen-doped carbon nanotubes (N–C NTs) with high conductivity, resulting in a high performance electrode material. The existence of N–C NTs effectively prevents the accumulation and agglomeration of the NiMoO4 nanosheets during the formation of a uniform outer shell, providing a higher specific surface area (258.2 m2 g−1). The electrochemical study displays that the C@NiMoO4 composite has a specific capacitance as high as 1242 F g−1 at a current density of 1 A g−1, and about 82.9% cycling stability after 2000 cycles. Moreover, the as-fabricated C@NiMoO4//N–C asymmetric supercapacitor (ASC) can achieve a maximum high energy density of 44.6 W h kg−1 at a power density of 250.4 W kg−1. These results imply that the C@NiMoO4 composite with a double-shelled hollow tube-structure is a promising candidate for high performance supercapacitors.

Graphical abstract: Nitrogen-doped carbon nanotube supported double-shelled hollow composites for asymmetric supercapacitors

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Sep 2017, accepted on 19 Nov 2017 and first published on 20 Nov 2017


Article type: Paper
DOI: 10.1039/C7NJ03422A
Citation: New J. Chem., 2018, Advance Article
  •   Request permissions

    Nitrogen-doped carbon nanotube supported double-shelled hollow composites for asymmetric supercapacitors

    Y. Zheng, J. Xu, Y. Zhang, X. Yang, Y. Zhang and Y. Shang, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ03422A

Search articles by author

Spotlight

Advertisements