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Experimental Analysis of GDL Degradation in PEM Fuel Cell
하태훈(Ha, Tae-Hun),박재만(Park, Jae-Man),조준현(Cho, Jun-Hyun),김한상(Min, Kyoung-Doug),민경덕(Lee, Eun-Suk),이은숙(Jung, Ji-Young),정지영(Kim, Do-Hun),김도훈(Jin, Yong-Won),진용원(Lee, Dae-Han) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11
To achieve the commercialization of PEM fuel cell, the durability problem must be solved. Recently, many researchers have focused on this durability problem and degradation studies about membrane and electrode have been reported. But durability characteristics of gas diffusion layer is not much reported yet. Durability of GDL is very important to maintain the performance of PEM fuel cell because the main function of GDL is a path of fuel and water and the GDL degradation causes the loss of the GDL function. In this study, the degradation of GDL, especially, the mechanical degradation process was investigated with the leaching test. The effect of water dissolution was observed through the test and the amount of GDL degradation was measured with various measurement methods such as weight measurement, static contact angle measurement, scanning electron microscope. After 2,000 hours test, the GDL showed structural damage and loss of hydrophobicity.