Jump to main content
Jump to site search


Cobalt and nitrogen-codoped ordered mesoporous carbon as highly efficient bifunctional catalysts for oxygen reduction and hydrogen evolution reactions

Abstract

The high cost and limited reserves of noble metals such as Pt have hampered their large-scale commercial applications in oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER). Herein, we developed a straightforward silica template approach to form porous carbons codoped with nitrogen and cobalt as highly efficient bifunctional electrocatalysts for ORR and HER. The resulted porous carbons exhibited excellent electrocatalytic activity for ORR in alkaline media, which compares favourably with that of commercial Pt/C (20 wt%), and had superior durability and excellent methanol tolerance. The porous carbons also showed superior performance for HER, with a low onset potential of -0.04 V, a Tafel slope of 49 mV dec-1, an overpotential of -0.106 V at a current density of 10 mA cm-2, and remarkable durability. These results demonstrate that the Co, N-doped carbons are promising bifunctional catalysts for fuel cell applications.

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Jul 2018, accepted on 02 Aug 2018 and first published on 06 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA06864J
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Cobalt and nitrogen-codoped ordered mesoporous carbon as highly efficient bifunctional catalysts for oxygen reduction and hydrogen evolution reactions

    X. Liu, W. Li and S. Zou, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA06864J

Search articles by author

Spotlight

Advertisements