Electrochemical carbon corrosion in high temperature proton exchange membrane fuel cells

Title
Electrochemical carbon corrosion in high temperature proton exchange membrane fuel cells
Authors
오형석이진희김한성
Keywords
High temperature proton exchange; membrane fuel cell; Carbon corrosion; Durability; Mass spectrometry; Electrocatalysts
Issue Date
2012-07
Publisher
International journal of hydrogen energy
Citation
VOL 37, NO 14-10849
Abstract
Electrochemical carbon corrosion occurring in a high temperature proton exchange membrane fuel cell (HT-PEMFC) operating under non-humidification conditions was investigated by measuring CO2 generation using on-line mass spectrometry and comparing the results with a low-temperature proton exchange membrane fuel cell (LT-PEMFC) operated under fully humidified conditions. The experimental results showed that more CO2 was measured for the HT-PEMFC, indicating that more electrochemical carbon corrosion occurs in HT-PEMFCs. This observation is attributed to the enhanced kinetics of electrochemical carbon corrosion due to the elevated operating temperature in HT-PEMFCs. Additionally, electrochemical carbon corrosion in HT-PEMFCs showed a strong dependence on water content. Therefore, it is critical to remove the water content in the supply gases to reduce electrochemical carbon corrosion.
URI
http://pubs.kist.re.kr/handle/201004/68268
ISSN
0360-3199
Appears in Collections:
KIST Publication > Article
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