Journal
APPLIED ENERGY
Volume 177, Issue -, Pages 817-822Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2016.05.154
Keywords
Proton exchange membrane fuel; cells/electrolyzer cells; Liquid/gas diffusion layers; Hydrogen production; Water splitting; Performance and efficiency
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Funding
- U.S. Department of Energy's National Energy Technology Laboratory [DE-FE0011585]
- DOE Office of Basic Energy Sciences
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In this study, a novel titanium thin LGDL with well-tunable pore morphologies was developed by employing nano-manufacturing and was applied in a standard PEMEC. The LGDL tests show significant performance improvements. The operating voltages required at a current density of 2.0 A/cm(2) were as low as 1.69 V, and its efficiency reached a report high of up to 88%. The new thin and flat LGDL with well-tunable straight pores has been demonstrated to remarkably reduce the ohmic, interfacial and transport losses. In addition, well-tunable features, including pore size, pore shape, pore distribution, and thus porosity and permeability, will be very valuable for developing PEMEC models and for validation of its simulations with optimal and repeatable performance. The LGDL thickness reduction from greater than 350 mu m of conventional LGDLs to 25 mu m will greatly decrease the weight and volume of PEMEC stacks, and represents a new direction for future developments of low-cost PEMECs with high performance. (C) 2016 Elsevier Ltd. All rights reserved.
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