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http://dx.doi.org/10.7316/KHNES.2013.24.4.320

Effect of Double Porous Layer on a Polymer Electrolyte Unitized Regenerative Fuel Cell  

Hwang, Chul-Min (Department of Energy & Environment Technological Development, Innovation KR Co., Ltd.)
Park, Dae-Heum (Research & Development Division, Hyundai Engineering & Construction Co., Ltd.)
Jung, Young-Guan (Department of Mechanical Engineering, Kumoh National University of Technology)
Kim, Kyunghoon (Department of Mechanical Engineering, Kumoh National University of Technology)
Kim, Jongsoo (Korea Institute of Machinery and Materials)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.24, no.4, 2013 , pp. 320-325 More about this Journal
Abstract
TUnitized reversible fuel cells (URFC) combine the functionality of a fuel cell and electrolyzer in one unitized device. For a URFC with proton exchange membrane, a titanium (Ti)-felt is applied to the gas diffusion layer (GDL) substrate at the oxygen electrode, and additionally titanium (Ti)-powders and TiN-powders are loaded in the GDL substrate as a micro porous layer (MPL). Double porous layer with TiN MPL was not acceptable for the URFC because both of fuel cell performance and electrolysis performance are degraded. The double porous layer with Ti-powder loading in the Ti-felt substrate influence rearly for the electrolysis performance. In contrast, the change of pore-size distribution brings a significant improvement of fuel cell performance under fully humidification conditions. This fact indicates that the hydrophobic meso-pores in the GDL play an important role for mass transport.
Keywords
roton exchange membrane; Fuel cell; Electrolyzer; Gas diffusion layer; Water management;
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Times Cited By KSCI : 1  (Citation Analysis)
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