Effect of heat-treatment temperature on carbon corrosion in polymer electrolyte membrane fuel cells

Young Jin Ko, Hyung Suk Oh, Hansung Kim

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This study examines the effect of heat-treatment temperature on the electrochemical corrosion of carbon nanofibers (CNFs) in polymer electrolyte membrane (PEM) fuel cells. Corrosion is investigated by monitoring the generation of CO2 using an on-line mass spectrometer at a constant potential of 1.4 V for 30 min. The experimental results show that the generation of CO2 decreases with increasing heat-treatment temperature, indicating that less electrochemical carbon corrosion occurs. In particular, when the heat-treatment temperature is 2400 °C, the change intensifies. X-ray photoelectron spectroscopic analysis shows that oxygen functional groups on the carbon surface decrease with increasing heat-treatment temperature. A reduction in oxygen functional groups increases the hydrophobic nature of the carbon surface, which is responsible for the increased corrosion resistance of CNFs.

Original languageEnglish
Pages (from-to)2623-2627
Number of pages5
JournalJournal of Power Sources
Volume195
Issue number9
DOIs
Publication statusPublished - 2010 May 1

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
fuel cells
corrosion
heat treatment
Carbon
Heat treatment
electrolytes
Corrosion
membranes
Carbon nanofibers
carbon
polymers
Functional groups
Oxygen
Temperature
Electrochemical corrosion
Spectroscopic analysis
temperature
Mass spectrometers
electrochemical corrosion

All Science Journal Classification (ASJC) codes

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

Cite this

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Effect of heat-treatment temperature on carbon corrosion in polymer electrolyte membrane fuel cells. / Ko, Young Jin; Oh, Hyung Suk; Kim, Hansung.

In: Journal of Power Sources, Vol. 195, No. 9, 01.05.2010, p. 2623-2627.

Research output: Contribution to journalArticle

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