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고분자 전해질형 연료전지에서 Hot Pressing 조건의 영향
Effects of Hot Pressing Conditions for a Proton Exchange Membrane Fuel Cell
HWAHAK KONGHAK, February 1996, 34(1), 105-110(6), NONE
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Abstract
고분자 전해질형 연료전지에서 고분자막/전극 어셈블리를 hot pressing 조건을 달리하여 제조하고 그 성능을 반응면적 5cm2인 단위전지에서 측정하였다. 전지의 성능은 고분자막과 전극간의 접합이 가능한 온도 범위에서 hot pressing 온도가 낮을수록, hot pressing 압력이 높을수록 향상되었다. 즉, 고분자 전해질형 연료전지의 성능은 고분자 전해질 내의 수분 함량 증가, 고분자막/전극간 접촉저항 감소 및 얇은 고분자막을 사용한 전해질의 이온저항 감소 등으로 향상시킬 수 있었다.
For a proton exchange membrane fuel cell, membrane and electrode assemblies were fabricated by differ-ent hot pressing conditions and those performances were observed in a unit cell having 5cm2 active electrode area. The cell performance increased with lower hot pressing temperature in the range of temperature having intimate contact between membrane and electrodes and with higher hot pressing pressure. Namely, the performance of proton exchange membrane fuel cell could be raised with higher water content in the membrane, Namely, the performance of proton exchange membrane fuel cell could be raised with higher water conent in the membrane, with lower contact resistance between membrane and electrodes and with lower ion resistance of the electrolyte using thinner membrane.
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References
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