| 학회 |
한국화학공학회 |
| 학술대회 |
2007년 가을 (10/26 ~ 10/27, 한국과학기술원) |
| 권호 |
13권 2호, p.1898 |
| 발표분야 |
에너지/환경 |
| 제목 |
Effect of the physical damages of MEA on the electrochemical properties and performance of PEFCs |
| 초록 |
The efficiency and lifetime of the polymer electrolyte fuel cell (PEFC) closely relate with the polymer electrolyte membrane. The durability and safety should be guaranteed for the commercialization of fuel cells. In this work, the effects of physical damages which can be caused in the process of membrane electrode assembly (MEA) fabrication, cell clamping and cell operation were investigated. To simulate the real PEFC conditions, the various sizes of cracks and holes were intentionally formed at the MEAs. The various sizes of holes were punched at the gas input, middle and output parts of MEAs. The I-V performance was evaluated for the prepared MEA samples along with cyclic voltammetry. The result of I-V performances and hydrogen-crossover rate could be directly correlated. The results show that, without precise electrochemical analysis apparatus, it’s difficult to aware any signs of physical breakage in the MEAs by checking just voltage changes before the physical destroy getting severe. |
| 저자 |
임수진1, 박구곤1, 박진수1, 윤영기1, 박석희1, 이원용1, 이영무2, 김창수1
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| 소속 |
1한국에너지기술(연), 2한양대 |
| 키워드 |
Fuel Cell; MEA; Pin-hole; crack; durability
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| E-Mail |
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| 원문파일 |
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