Issue 17, 2014

Nickel cobalt oxide/carbon nanotubes hybrid as a high-performance electrocatalyst for metal/air battery

Abstract

High-performance, low cost catalyst for oxygen reduction reaction (ORR) remains a big challenge. Herein, nanostructured NiCo2O4/CNTs hybrid was proposed as a high-performance catalyst for metal/air battery for the first time. The well-formed NiCo2O4/CNTs hybrid was studied by steady-state linear polarization curves and galvanostatic discharge curves in comparison with CNTs-free NiCo2O4 and commercial carbon-supported Pt. Because of the synergistic effect, NiCo2O4/CNTs hybrid exhibited significant improvement of catalytic performance in comparison with NiCo2O4 or CNTs alone, even outperforming Pt/C hybrid in ORR process. In addition, the benefits of Ni incorporation were demonstrated by the improved catalytic performance of NiCo2O4/CNTs compared to Co3O4/CNTs, which should be attributed to improved electrical conductivity and new, highly efficient, active sites created by Ni cation incorporation into the spinel structure. NiCo2O4/CNTs hybrid could be used as a promising catalyst for high power metal/air battery.

Graphical abstract: Nickel cobalt oxide/carbon nanotubes hybrid as a high-performance electrocatalyst for metal/air battery

Supplementary files

Article information

Article type
Paper
Submitted
19 Apr 2014
Accepted
01 Jul 2014
First published
07 Jul 2014

Nanoscale, 2014,6, 10235-10242

Nickel cobalt oxide/carbon nanotubes hybrid as a high-performance electrocatalyst for metal/air battery

H. Zhang, H. Qiao, H. Wang, N. Zhou, J. Chen, Y. Tang, J. Li and C. Huang, Nanoscale, 2014, 6, 10235 DOI: 10.1039/C4NR02125H

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