| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 |
18권 1호, p.729 |
| 발표분야 |
에너지 |
| 제목 |
Effects of freeze/thaw cycles and gas purges on the performance degradation of direct methanol fuel cell |
| 초록 |
Performance degradation of direct methanol fuel cell (DMFC) was investigated by freeze/thaw cycle. To analysis the temperature effect, the freeze/thaw cycles were performed from two freeze temperature (-32oC, -20oC) to 60oC. Details of causes of performance degradation were observed by single cell and EIS measurement and CV measurement, SEM measurement. Different purging effects named anode/cathode purge, cathode purge, no purge were adopted for comparisons. The cells purged by nitrogen gas were found to have little performance loss than the cell which was not purged during freeze/thaw cycles. Cell resistance change and ECSAs of the DMFC with gas purge also was smaller Air purge showed similar influences on DMFC performance and impedance with nitrogen gas purge. These results showed DMFC performance had relationship with the water amount in the cell at sub-zero temperature. |
| 저자 |
오유미1, 김상경2, 임성엽2, 백동현2, 정두환2, 설용건1
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| 소속 |
1연세대, 2한국에너지기술(연) |
| 키워드 |
DMFC; MEA; freeze/thaw cycles; performance degradation; sub-zero temperature
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| E-Mail |
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| 원문파일 |
초록 보기 |
