Template-assisted synthesis of Ni–Co bimetallic nanowires for urea electrocatalytic oxidation

Wei Yan, Dan Wang, Gerardine G. Botte

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Nickel–cobalt bimetallic nanowire electrocatalyts (NCNE), synthesized through anodic aluminium oxide templates, were evaluated for urea electro-oxidation in alkaline medium for their applications in wastewater remediation, hydrogen production, and fuel cells. Compared to bulk nickel film electrocatalysts (NFE), the NCNE resulted in a ca. 110 mV decrease in the overpotential of urea electro-oxidation. In addition, the NCNE exhibited higher oxidation current density and current efficiency for urea electrolysis than those of NFE and nickel–cobalt bimetallic film electrocatalysts (NCFE). The maximum current efficiency for urea electro-oxidation on the NCNE reached up to 81 %, which is ~25 % higher than those of the NFE and NCFE.

Original languageEnglish
Pages (from-to)1217-1222
Number of pages6
JournalJournal of Applied Electrochemistry
Volume45
Issue number11
DOIs
StatePublished - Nov 1 2015

Keywords

  • Anodic aluminium oxide (AAO) templates
  • Hydrogen production
  • Ni–Co bimetallic nanowires
  • Urea electro-oxidation
  • Wastewater remediation

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