기체확산층의 미세다공층 침투 깊이에 따른 고분자 전해질형 연료전지의 내구성능 저하 분석에 관한 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 24; no. 3; pp. 216 - 222
• Main Authors: 박재만(Jae Man Park), 오환영(Hwan Yeong Oh), 조준현(Jun Hyun Cho), 민경덕(Kyoung Doug Min), 이은숙(Eun Sook Lee), 정지영(Jy Young Jyoung)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2013
• Subjects: 기계공학; 탄소부식; Carbon corrosion; 미세다공층; 고분자 전해질형 연료전지; Durability; PEM Fuel cell; 내구성능; Micro porous layer(MPL); 기체확산층; Gas diffusion layer(GDL)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2013.24.3.216

Durability characteristics of Gas Diffusion Layer(GDL) is one of the important issues for accomplishing commercialization of Proton Exchange Membrane Fuel Cell(PEMFC). It is strongly related to the performances of PEMFC because one of the main functions of GDL is to work as a path of fuel, air and water. When the GDL does not work on their proposed functions due to the degradation of durability, mass transfer in PEMFC is disturbed and it might cause the flooding phenomenon. Thus, investigating the durability of GDL is important and understanding the GDL degradation process is needed. In this study, electrochemical degradation with carbon corrosion is introduced. The carbon corrosion experiment is carried out with GDLs which have different MPL penetration thicknesses. After the experiment, the amount of degradation of GDL is measured with various properties of GDL such as weight, thickness and performance of the PEMFC. The degraded GDL shows loss of their properties.