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In relation to this article, we declare that there is no conflict of interest.
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Received May 30, 2018
Accepted September 27, 2018
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Effects of electrode compression on the water droplet removal from proton exchange membrane fuel cells

Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Iran University of Science and Technology, Tehran 16846-13144, Iran, India 1School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran 2School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
molaeimanesh@iust.ac.ir
Korean Journal of Chemical Engineering, January 2019, 36(1), 136-145(10), 10.1007/s11814-018-0157-y
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Abstract

Proton-exchange membrane (PEM) fuel cells are one of the main candidates for propulsion systems of modern electric vehicles. However, appropriate water management is crucial to performance. Cell compression can affect the performance and water management of PEM fuel cells. Although the influence of cell compression on the transport of continuous water flow through the porous electrodes has been investigated, the influence of cell compression on the droplet dynamic behavior through these electrodes is not investigated thoroughly. Employing a pore-scale simulation method such as lattice Boltzmann method (LBM) is an excellent means for such investigation. In this study, LBM was applied to investigate the influence of compression of gas diffusion layer (GDL) on the removal of a water droplet from an electrode of a cell with interdigitated flow field. During removal process the droplet dynamic movement through five different GDLs (one without compression and the other four with four different levels of compression) was depicted and analyzed. The results reveal that the droplet experiences a faster removal process when the GDL is compressed. However, more increasing of compression does not result in a faster removal process, which indicates the existence of an optimum compression level for which the fastest removal process occurs.

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