Effect of operating conditions on carbon corrosion in polymer electrolyte membrane fuel cells

Katie Heeyum Lim, Hyung Suk Oh, Sang Eun Jang, Young Jin Ko, Hyun Jong Kim, Hansung Kim

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

The influence of humidity, cell temperature and gas-phase O2 on the electrochemical corrosion of carbon in polymer electrolyte membrane fuel cells is investigated by measuring CO2 emission at a constant potential of 1.4 V for 30 min using on-line mass spectrometry. Carbon corrosion shows a strong positive correlation with humidity and cell temperature. The presence of water is indispensable for electrochemical carbon corrosion. By contrast, the presence of gas-phase O2 has little effect on electrochemical carbon corrosion. With increased carbon corrosion, changes in fuel cell electrochemical characteristics become more prominent and thereby indicate that such corrosion significantly affects fuel cell durability.

Original languageEnglish
Pages (from-to)575-579
Number of pages5
JournalJournal of Power Sources
Volume193
Issue number2
DOIs
Publication statusPublished - 2009 Sep 5

Bibliographical note

Funding Information:
This work was partially supported by Hyundai Motors and the Ministry of Knowledge Economy of the South Korean Government through grant no. 2005-N-FC12-P-01-0-000, and a fostering project of the Core-Technology Research Center.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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