Effect of heat treatment temperature on carbon corrosion in polymer electrolyte membrane fuel cells
- Effect of heat treatment temperature on carbon corrosion in polymer electrolyte membrane fuel cells
- 오형석; 고영진; 김한성
- Carbon nanofiber; Durability; Heat-treatment temperature; Carbon corrosion; Polymer electrolyte membrane fuel cell
- Issue Date
- Journal of power sources
- VOL 195, NO 9-2627
- 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 1.4V 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 degrees 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.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.