Academic Journal
Improved analytical modeling and mechanical characterization of gas diffusion layers under compression load
| العنوان: | Improved analytical modeling and mechanical characterization of gas diffusion layers under compression load |
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| المؤلفون: | Yang Xiao, Zhenhai Gao, Fei Gao, Tianyao Zhang, Wenhua Zhang, Ziqiao Li, Xiaoyuan Ma, Jinxuan Qi |
| المصدر: | Energy Science & Engineering, Vol 8, Iss 8, Pp 2799-2807 (2020) |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Technology LCC:Science |
| مصطلحات موضوعية: | analytical model, gas diffusion layer, irreversible deformation, nonlinear behavior, PEM fuel cells, Technology, Science |
| الوصف: | Abstract Gas diffusion layers (GDLs) are the most rigid layers in a 5‐layer or 7‐layer membrane electrode assembly (MEA) of a proton exchange membrane fuel cell. Therefore, in the fuel cell analysis, the mechanical properties of GDLs have a great impact on the stress distribution of the membrane as well as the performance of the whole cell. However, the mechanical properties of GDLs are not sufficiently studied. Nonlinear behavior of GDLs under cyclic compression is discussed rarely in literature. The existing model takes both constraints into consideration, but due to a geometrical oversimplification of the carbon paper microstructure, it shows some deviation, which cannot be overcome by selecting appropriate parameters. In this paper, the geometry of carbon paper microstructure has been reanalyzed. Based on the improved geometry formula, a modified model of carbon paper GDL is presented and verified by experimental data. Furthermore, both the experimental mechanical characteristics are achieved as support data for the improved model. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2050-0505 |
| Relation: | https://doaj.org/toc/2050-0505 |
| DOI: | 10.1002/ese3.695 |
| URL الوصول: | https://doaj.org/article/9994acb3bff6437fb060a6fa6f5c983d |
| رقم الانضمام: | edsdoj.9994acb3bff6437fb060a6fa6f5c983d |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20500505 |
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| DOI: | 10.1002/ese3.695 |