Experimental Study of Gas Invasion Mechanism in the Porous Transport Layer of a PEM Electrolyzer

IF 2.7 3区工程技术 Q3 ENGINEERING, CHEMICAL

Transport in Porous Media Pub Date : 2025-01-28 DOI:10.1007/s11242-025-02152-w

Bilal Amoury, Tien Dung Le, Minchuan Jiang, Sebastien Leclerc, Gaël Maranzana, Sophie Didierjean

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引用次数: 0

Abstract

The gas invasion mechanism through an initially saturated porous transport layer (PTL) of a proton exchange membrane (PEM) electrolysis is studied. Magnetic resonance imaging (MRI) technique is used to quantify water content in the porous layer during the gas invasion for different gas and water flow rates. Instead of the real PTL made of titanium which is paramagnetic and cannot be used in the MRI, borosilicate filters with thickness, porosity, and pore size similar to the PTL were used in the MRI experiments. The MRI measurement allows acquisition of the 2D water saturation map within the porous material, which can be averaged to obtain saturation profiles in the gas flow direction. The dependence of the saturation profile on the sample properties and the water/gas flow rates are carefully analyzed to give insight into the gas invasion pattern in such porous materials. Moreover, by recording the gas pressure at the inlet and observing the bubble formation and evacuation in the water channel, more information about the gas preferential pathways, bubble appearance sites can be achieved.

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来源期刊

Transport in Porous Media 工程技术-工程：化工

CiteScore

5.30

自引率

7.40%

发文量

155

审稿时长

4.2 months

期刊介绍： -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).