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Article

A Study on the Evaluation of Effective Properties of Randomly Distributed Gas Diffusion Layer (GDL) Tissues with Different Compression Ratios

1
Design and Analysis Center, Korea Institute of Carbon Convergence Technology, Jeonju 54853, Korea
2
Commercial Vehicle Innovation Growth Center, Jeonbuk Institute of Automotive Convergence Technology, Kunsan 54158, Korea
3
Department of Mechanical Engineering, Kunsan National University, Kunsan 54150, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(21), 7407; https://doi.org/10.3390/app10217407
Received: 13 September 2020 / Revised: 28 September 2020 / Accepted: 19 October 2020 / Published: 22 October 2020
(This article belongs to the Special Issue Homogenization for Composite Materials)
The gas diffusion layer (GDL) typically consists of a thin layer of carbon fiber paper, carbon cloth or nonwoven and has numerous pores. The GDL plays an important role that determines the performance of the fuel cell. It is a medium through which hydrogen and oxygen are transferred and serves as a passage through which water, generated by the electrochemical reaction, is discharged. The GDL tissue undergoes a compressive loading during the stacking process. This leads to changes in fiber content, porosity and resin content due to compressive load, which affects the mechanical, chemical and electrical properties of the GDL and ultimately determines fuel cell performance. In this study, the geometry of a GDL was modeled according to the compression ratios (10%, 20%, 30%, 40% and 50%), which simulated the compression during the stacking process and predicted the equivalent properties according to the change of GDL carbon fiber content, matrix content and pore porosity, etc. The proposed method to predict the equivalent material properties can not only consider the stacking direction of the material during stack assembling process, but can also provide a manufacturing standard for fastening compressive load for GDL. View Full-Text
Keywords: effective properties; gas diffusion layer (GDL); homogenization; nonwoven; proton-exchange membrane fuel cell (PEMFC) effective properties; gas diffusion layer (GDL); homogenization; nonwoven; proton-exchange membrane fuel cell (PEMFC)
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MDPI and ACS Style

Lee, H.; Choi, C.-W.; Kang, K.-W.; Jin, J.-W. A Study on the Evaluation of Effective Properties of Randomly Distributed Gas Diffusion Layer (GDL) Tissues with Different Compression Ratios. Appl. Sci. 2020, 10, 7407. https://doi.org/10.3390/app10217407

AMA Style

Lee H, Choi C-W, Kang K-W, Jin J-W. A Study on the Evaluation of Effective Properties of Randomly Distributed Gas Diffusion Layer (GDL) Tissues with Different Compression Ratios. Applied Sciences. 2020; 10(21):7407. https://doi.org/10.3390/app10217407

Chicago/Turabian Style

Lee, Haksung, Chan-Woong Choi, Ki-Weon Kang, and Ji-Won Jin. 2020. "A Study on the Evaluation of Effective Properties of Randomly Distributed Gas Diffusion Layer (GDL) Tissues with Different Compression Ratios" Applied Sciences 10, no. 21: 7407. https://doi.org/10.3390/app10217407

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