Thin liquid/gas diffusion layers for high-efficiency hydrogen production from water splitting

Jingke Mo, Zhenye Kang, Gaoqiang Yang, Scott T. Retterer, David A. Cullen, Todd J. Toops, Johney B. Green and Feng-Yuan Zhang

Applied Energy, 2016, vol. 177, issue C, 817-822

Abstract: 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 2.0A/cm2 were as low as 1.69V, 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 350μm of conventional LGDLs to 25μm 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.

Keywords: Proton exchange membrane fuel cells/electrolyzer cells; Liquid/gas diffusion layers; Hydrogen production; Water splitting; Performance and efficiency (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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DOI: 10.1016/j.apenergy.2016.05.154

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