Jump to main content
Jump to site search

Issue 9, 2015
Previous Article Next Article

Hollow mesoporous NiCo2O4 nanocages as efficient electrocatalysts for oxygen evolution reaction

Author affiliations

Abstract

The design and fabrication of efficient and inexpensive electrodes for oxygen evolution reaction (OER) is essential for energy-conversion technologies. Herein, high OER activity is achieved using hollow mesoporous NiCo2O4 nanocages synthesized via a Cu2O-templated strategy combined with coordination reaction. The NiCo2O4 nanostructures with a hollow cavity, large roughness and high porosity show only a small overpotential of ∼0.34 V at the current density of 10 mA cm−2 and a Tafel slope of 75 mV per decade, which is comparable with the performance of the best reported transition metal oxide based OER catalysts in the literature. Meanwhile, the positive impacts of the nanocage structure and the Ni incorporation on the electrocatalytic performance are also demonstrated by comparing the OER activities of NiCo2O4 nanocages with Co3O4 nanocages, NiCo2O4 nanoparticles and 20 wt% Pt/C. Moreover, the NiCo2O4 nanocages also manifest superior stability to other materials. All these merits indicate that the hollow mesoporous NiCo2O4 nanocages are promising electrocatalysts for water oxidation.

Graphical abstract: Hollow mesoporous NiCo2O4 nanocages as efficient electrocatalysts for oxygen evolution reaction

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Dec 2014, accepted on 19 Jan 2015 and first published on 19 Jan 2015


Article type: Paper
DOI: 10.1039/C4DT03803G
Author version
available:
Download author version (PDF)
Dalton Trans., 2015,44, 4148-4154

  •   Request permissions

    Hollow mesoporous NiCo2O4 nanocages as efficient electrocatalysts for oxygen evolution reaction

    X. Lv, Y. Zhu, H. Jiang, X. Yang, Y. Liu, Y. Su, J. Huang, Y. Yao and C. Li, Dalton Trans., 2015, 44, 4148
    DOI: 10.1039/C4DT03803G

Search articles by author

Spotlight

Advertisements