Jump to main content
Jump to site search

Issue 3, 2013
Previous Article Next Article

Ni–Co oxides nanowire arrays grown on ordered TiO2 nanotubes with high performance in supercapacitors

Author affiliations

Abstract

We develop a facile hydrothermal synthesis method to fabricate mesoporous Ni–Co oxides nanowire arrays on ordered TiO2 nanotubes (Ni–Co oxides NWs@TiO2NTs) as a high-capacity pseudocapacitor material. The composite electrode presented the highest specific capacitance of 2353 F g−1 at a charge and discharge current density of 2.5 A g−1 with excellent cycling ability, retaining 95% of the maximum capacitance after 3000 cycles. Even at a high current density of 50 A g−1, the electrode exhibited a specific capacitance of up to 2173 F g−1. In addition, the testing of a (Ni–Co oxides NWs@TiO2NTs)//(Ni–Co oxides NWs@TiO2NTs) symmetric cell yielded a specific capacitance of up to 144 F g−1 at a current density of 4 A g−1. The much improved capacity and cycling stability may be attributed to the superior conductivity and the aligned structure of the Ni–Co oxides NWs and the TiO2NTs substrate, which can improve electron/ion transport and enhance the kinetics of the redox reactions.

Graphical abstract: Ni–Co oxides nanowire arrays grown on ordered TiO2 nanotubes with high performance in supercapacitors

Back to tab navigation

Publication details

The article was received on 24 Aug 2012, accepted on 15 Oct 2012 and first published on 16 Oct 2012


Article type: Paper
DOI: 10.1039/C2TA00055E
Citation: J. Mater. Chem. A, 2013,1, 594-601
  •   Request permissions

    Ni–Co oxides nanowire arrays grown on ordered TiO2 nanotubes with high performance in supercapacitors

    F. Yang, J. Yao, F. Liu, H. He, M. Zhou, P. Xiao and Y. Zhang, J. Mater. Chem. A, 2013, 1, 594
    DOI: 10.1039/C2TA00055E

Search articles by author

Spotlight

Advertisements