Analysis of carbon corrosion in anode under fuel starvation using on-line mass spectrometry in polymer electrolyte membrane fuel cells

Katie Heeyum Lim, Woong Hee Lee, Yoonjae Jeong, Hansung Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The precise mechanism of performance degradation in polymer electrolyte membrane fuel cells (PEMFCs) under the fuel starvation condition is investigated by simultaneously monitoring the potential behavior and exhaust gas from the anode using the hydrogen reference electrode and in situ online mass spectrometry. Interestingly, the water electrolysis begins at a lower potential range, and carbon oxidation occurs at a higher range as the alternative reaction to hydrogen oxidation. Thus, carbon corrosion, which is detrimental to cell performance, can be reduced by extending the duration of the water electrolysis reaction. In this regard, the introductions of the graphitized carbon support and water electrolysis catalyst to anode are effective in alleviating the damage due to fuel starvation by rendering the dominant alternative reaction to continue the water electrolysis.

Original languageEnglish
Pages (from-to)F1580-F1586
JournalJournal of the Electrochemical Society
Volume164
Issue number14
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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