Electrocatalytic oxygen evolution reaction (OER) on mixed nanoporous RuIr borides

Saad Intikhab, Maxim Sokol, Varun Natu, Swarnendu Chatterjee, Yawei Li, Michel W. Barsoum, Joshua Snyder

Research output: Contribution to journalArticlepeer-review

Abstract

Efficient water splitting for commercial electrolysis devices is predicated on the development of materials, specifically for the catalytic electrodes, that exhibit an optimal balance between activity and stability. Complicating the development of electrocatalytic materials, particularly for oxygen-evolving anodes in acidic polymer electrolyte membrane electrolyzers, is an inverse relationship between activity and stability. Here the development of a nanostructured oxygen evolution reaction (OER) electrocatalyst for low-pH water splitting is demonstrated. Dealloying of mixed RuIr borides is used to form a high aspect ratio electrocatalytic material that exhibits low OER overpotentials matching that of RuOx and electrolytic stability matching that of IrOx. Graphic abstract: [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)1101-1108
Number of pages8
JournalJournal of Applied Electrochemistry
Volume51
Issue number7
DOIs
StatePublished - Jul 2021
Externally publishedYes

Keywords

  • Dealloying
  • Nanoporous metals
  • Oxygen evolution reaction
  • PEM electrolysis

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