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Energies 2018, 11(2), 319; https://doi.org/10.3390/en11020319

Experimental Study on Improvement of Performance by Wave Form Cathode Channels in a PEM Fuel Cell

1
SFR NSSS System Design Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero 989 Beon-gil, Yuseong-gu, Daejeon 34057, Korea
2
Department of Mechanical Engineering, Sunmoon University, 221-70 Sunmoon-ro, Tangjeong-myeon, Asan-si, Chungcheongnam-do 31460, Korea
3
Graduate School of Disaster Prevention, Kangwon National University, 346 Joongang-ro, Samcheck-si, Gangwon-do 25913, Korea
*
Author to whom correspondence should be addressed.
Received: 14 December 2017 / Revised: 3 January 2018 / Accepted: 26 January 2018 / Published: 2 February 2018
(This article belongs to the Special Issue Polymer Electrolyte Membrane Fuel Cells 2017)
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Abstract

We propose a wave-like design on the surface of cathode channels (wave form cathode channels) to improve oxidant delivery to gas diffusion layers (GDLs). We performed experiments using proton-exchange membrane fuel cells (PEMFCs) combined with wave form surface design on cathodes. We varied the factors of the distance between wave-bumps (the adhesive distance, AD), and the size of the wave-bumps (the expansion ratio, ER). The ADs are three, four, and five times the size of the half-circle bump’s radius, and the ERs are two-thirds, one-half, and one-third of the channel’s height. We evaluated the performances of the fuel cells, and compared the current-voltage (I-V) relations. For comparison, we prepared PEMFCs with conventional flat-surfaced oxygen channels. Our aim in this work is to identify fuel cell operation by modifying the surface design of channels, and ultimately to find the optimal design of cathode channels that will maximize fuel cell performance. View Full-Text
Keywords: wave form; PEMFC; cathode channel; gas diffusion layer (GDL); adhesive distance (AD); expansion ratio (ER) wave form; PEMFC; cathode channel; gas diffusion layer (GDL); adhesive distance (AD); expansion ratio (ER)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Byun, S.-J.; Wang, Z.H.; Son, J.; Kwak, D.-K.; Kwon, Y.-C. Experimental Study on Improvement of Performance by Wave Form Cathode Channels in a PEM Fuel Cell. Energies 2018, 11, 319.

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