High Activity Oxygen Evolution Reaction Catalysts from Additive-Controlled Electrodeposited Ni and NiFe Films

Thao T.H. Hoang, Andrew A. Gewirth

Research output: Contribution to journalArticle

Abstract

Electrodeposition of Ni or NiFe films exhibiting fractal-like behavior from plating baths containing an inhibitor, such as 3,5-diamino-1,2,4-triazole (DAT), is found to yield oxygen evolution reaction (OER) catalysts for alkaline solutions exhibiting high current densities (100 mA/cm2), high mass activity (-1200 A/g of catalyst), high stability (>72 h), and low overpotentials (-300 mV). By changing electrodeposition time, the activity of the catalyst can be tuned, with longer times yielding higher activities. The electrodeposition method works with any conductive substrate yielding unprecedented performance and providing an easy route to high activity catalysts.

Original languageEnglish (US)
Pages (from-to)1159-1164
Number of pages6
JournalACS Catalysis
Volume6
Issue number2
DOIs
StatePublished - Feb 5 2016

Keywords

  • NiFe
  • electrocatalyst
  • electrodeposition
  • oxygen evolution
  • water splitting

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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