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 language | English |
|---|---|
| Pages (from-to) | 575-579 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 193 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 Sep 5 |
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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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Effect of operating conditions on carbon corrosion in polymer electrolyte membrane fuel cells. / Lim, Katie Heeyum; Oh, Hyung Suk; Jang, Sang Eun; Ko, Young Jin; Kim, Hyun Jong; Kim, Hansung.
In: Journal of Power Sources, Vol. 193, No. 2, 05.09.2009, p. 575-579.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of operating conditions on carbon corrosion in polymer electrolyte membrane fuel cells
AU - Lim, Katie Heeyum
AU - Oh, Hyung Suk
AU - Jang, Sang Eun
AU - Ko, Young Jin
AU - Kim, Hyun Jong
AU - Kim, Hansung
PY - 2009/9/5
Y1 - 2009/9/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=67649411545&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649411545&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2009.04.006
DO - 10.1016/j.jpowsour.2009.04.006
M3 - Article
AN - SCOPUS:67649411545
VL - 193
SP - 575
EP - 579
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 2
ER -