The inhibition of electrochemical carbon corrosion in polymer electrolyte membrane fuel cells using iridium nanodendrites

Jong Gil Oh, Woong Hee Lee, Hansung Kim

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The addition of Ir-based water electrolysis catalysts to the catalyst layer in polymer electrolyte membrane fuel cells was examined as a promising approach for preventing electrochemical carbon corrosion under severely corrosive conditions. Electrochemical carbon corrosion of membrane electrode assemblies containing different amounts of IrO2 or shape-controlled Ir dendrite catalysts were characterized using on-line mass spectrometry. In particular, Ir dendrite catalysts possess high activity toward oxygen evolution reactions when compared to IrO2. As a result, Ir dendrites provided a very effective method of removing water from the catalyst layer. Therefore, the addition of 1 wt% Ir dendrite (0.008 mg cm-2) to the catalyst layer of the cathode decreased electrochemical carbon corrosion by 84% at 1.6 VNHE compared with a conventional membrane electrode assembly in the absence of water electrolysis catalysts.

Original languageEnglish
Pages (from-to)2455-2461
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number3
DOIs
Publication statusPublished - 2012 Feb

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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