Investigation of multi-metal catalysts for stable hydrogen production via urea electrolysis

Rebecca L. King, Gerardine G. Botte

Research output: Contribution to journalArticlepeer-review

192 Scopus citations


It has been shown that urea electrolysis is a viable method for wastewater remediation and simultaneous production of valuable hydrogen. Inexpensive nickel catalyst is optimal for the oxidation of urea in alkaline media but improvements are needed to minimize surface blockage and increase current density. Multi-metal catalysts were investigated by depositing platinum group metals on a nickel substrate. Rhodium and nickel proved synergistic to reduce surface blockage and increase catalyst stability. Rh-Ni electrodes reduced the overpotential for the electro-oxidation of urea and improved the current density by a factor of 200 compared to a Ni catalyst.

Original languageEnglish
Pages (from-to)9579-9584
Number of pages6
JournalJournal of Power Sources
Issue number22
StatePublished - Nov 15 2011


  • Electrodeposition
  • Hydrogen production
  • Multi-metal electrocatalysts
  • Urea electrolysis


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