期刊
APPLIED ENERGY
卷 111, 期 -, 页码 300-309出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2013.05.022
关键词
Proton exchange membrane fuel cell; Gas diffusion layer; Durability; Micro-porous layer; Penetration thickness
资金
- New & Renewable Energy R&D of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [2011301003007D]
- Ministry of Trade, Industry Energy
- Brain Korea 21 (BK21)
- KOSEF/SNU-IAMD
- Korea Evaluation Institute of Industrial Technology (KEIT) [2011301003007D] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The optimal design of the gas diffusion layer (GDL) of proton exchange membrane fuel cells is crucial because it directly determines the mass transport mechanism of the reactants and products. In this study, the micro-porous layer (MPL) penetration thickness, which affects the pore size profile through the GDL, is varied as the design parameter of the GDL. The cell performance is investigated under various humidity conditions, and the water permeability characteristics are studied. In addition, the accelerated carbon corrosion stress test is conducted to determine the effect of MPL penetration on GDL degradation. GDLs with large MPL penetration thickness show better performance in the high-current-density region due to the enhanced management of water resulting from a balanced capillary pressure gradient. However, the loss of penetrated MPL parts is observed due to the low binding force between the MPL and the GDL substrate. (C) 2013 Elsevier Ltd. All rights reserved.
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