Jump to main content
Jump to site search

Issue 30, 2013
Previous Article Next Article

Hierarchical Mo-decorated Co3O4 nanowire arrays on Ni foam substrates for advanced electrochemical capacitors

Author affiliations

Abstract

Herein, we report the synthesis of hierarchical small quantity Mo-decorated Co3O4 nanowire arrays on nickel foam substrates by a powerful two-step solution-based method. The “oriented attachment” and “self-assembly” crystal growth mechanisms are proposed to discuss the growth of the Mo-decorated Co3O4 heterostructures. This heterostructure material with a high specific surface areas provides an extraordinarily high area capacitance of 3.5 F cm−2 at a current density of 17 mA cm−2 (∼2000 F g−1 at a current density of 10 A g−1) in the initial cycles, compared with a bare Co3O4 nanowire array electrode with 2.2 F cm−2 at 17 mA cm−2 (∼1257 F g−1 at 10 A g−1), exhibiting a significant increase in the capacitance of around 60%. When the current density of the hybrid array is increased by 20 times (1.7 to 34 mA cm−2), more than 73% of the specific capacitance can be maintained, which shows a good rate performance. Such a growth approach offers a versatile technique for the design and synthesis of metal oxide hierarchical nanoarrays for electrochemical energy storage applications.

Graphical abstract: Hierarchical Mo-decorated Co3O4 nanowire arrays on Ni foam substrates for advanced electrochemical capacitors

Back to tab navigation

Publication details

The article was received on 23 Mar 2013, accepted on 20 May 2013 and first published on 21 May 2013


Article type: Paper
DOI: 10.1039/C3TA11152K
Citation: J. Mater. Chem. A, 2013,1, 8593-8600
  •   Request permissions

    Hierarchical Mo-decorated Co3O4 nanowire arrays on Ni foam substrates for advanced electrochemical capacitors

    H. Zhang, Y. Chen, W. Wang, G. Zhang, M. Zhuo, H. Zhang, T. Yang, Q. Li and T. Wang, J. Mater. Chem. A, 2013, 1, 8593
    DOI: 10.1039/C3TA11152K

Search articles by author

Spotlight

Advertisements