Characterization of Commercial Gas Diffusion Layers (GDL) by Liquid Extrusion Porometry (LEP) and Gas Liquid Displacement Porometry (GLDP)

被引：4

作者：

Peinador, Rene I. ^{[1
]}

Abba, Oumaima ^{[2
]}

Calvo, Jose I. ^{[3
,4
,5
]}

机构：

[1] Inst Filtrat & Tech Separat IFTS, Rue Marcel Pagnol, F-47510 Foulayronnes, France

[2] Univ Toulouse III Paul Sabatier, Fac Sci & Ingn FSI, Dept Genie Procedes & Bioprocedes, F-31400 Toulouse, France

[3] Univ Valladolid, Escuela Tecn Super Ingn Agr ETSIIAA, Dept Fis Aplicada, Palencia 34071, Spain

[4] CSIC, Associated Res Unit, Surfaces & Porous Mat SMAP, UVainnova Bldg,Paseo Belen 11, Valladolid 47071, Spain

[5] Univ Valladolid, Inst Sustainable Proc ISP, Dr Mergelina S-N, Valladolid 47071, Spain

来源：

MEMBRANES | 2022年 / 12卷 / 02期

关键词：

membrane characterization; pore-size distribution (PSD); capillary pressure; GDL; LEP; MEMBRANE FUEL-CELLS; SOLAR-HYDROGEN SYSTEMS; HEAT; OPTIMIZATION; PERFORMANCE; FOCUS; AREA;

D O I：

10.3390/membranes12020212

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

This works aims to study the porous characterization of several commercial Gas Diffusion Layers (GDL). Three carbon-based porous GDL featuring a highly rigid microstructure of interconnected pores of several manufacturers were analyzed. Gas Liquid Displacement Porometry (GLDP) and Liquid Extrusion Porometry (LEP) have been used to obtain their pore size distributions (PSD) and the mean and mode pore diameters (d(avg) and d(mod)), by means of a gas/liquid and extrusion porometer developed at IFTS. N-dodecane liquid has been used to completely wet the GDL's assuring penetration of the liquid into the carbon fibrous structure. The results demonstrated the accuracy of the setup on characterizing GDL in the Particle Filtration (PF) range by GLDP and LEP, with reasonable agreements of resulting PSD and average sizes between both techniques when GLDP and LEP results are compared. Differences can be explained in terms of the high pore connectivity of these kinds of structures.

引用

页数：13

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