Rhodium electrodeposition on nickel electrodes used for urea electrolysis

Alexander Thomas Miller, Brian Lloyd Hassler, Gerardine G. Botte

Research output: Contribution to journalArticle

81 Scopus citations

Abstract

A procedure for the constant potential electrodeposition of rhodium onto nickel electrodes, the subsequent surface characterizations, and electrochemical evaluation is presented. The resulting Ni/Rh electrodes were evaluated for their activity as anode catalysts for the electro-oxidation of urea. A detailed procedure for the electrodeposition of Rh onto Ni foil is provided. It is shown that the electrocatalytic performance of Ni/Rh electrodes on the oxidation of urea in alkaline medium is primarily influenced by two electrodeposition parameters: the applied electrodeposition potential and the loading of Rh (mg cm -2). An optimization for electrocatalytic performance based on the electrodeposition potential and Rh loading is demonstrated. The effect of these parameters on visual finish, surface morphology, and crystal structure was also studied.

Original languageEnglish
Pages (from-to)925-934
Number of pages10
JournalJournal of Applied Electrochemistry
Volume42
Issue number11
DOIs
StatePublished - Nov 2012

Keywords

  • Electrodeposition
  • Fuel cells
  • Hydrogen production
  • Urea electrolysis
  • Wastewater remediation

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