Single- and Double-Sided Coated Gas Diffusion Layers Used in Polymer Electrolyte Fuel Cells: A Numerical Study

被引：5
作者：
Okereke, Isaac C. [1 ,2 ]
Ismail, Mohammed S. [3 ]
Ingham, Derek B. [1 ]
Hughes, Kevin [1 ]
Ma, Lin [1 ]
Pourkashanian, Mohamed [1 ,4 ]
机构：
[1] Univ Sheffield, Energy Inst, Sheffield S3 7RD, England
[2] Akwa Ibom State Univ, Fac Engn, Dept Mech Engn, Mkpat Enin 524106, Akwa Ibom, Nigeria
[3] Univ Hull, Sch Engn, Kingston Upon Hull HU6 7RX, England
[4] Univ Sheffield, Tanslat Energy Res Ctr, Sheffield S3 7RD, England
来源：
ENERGIES | 2023年 / 16卷 / 11期
关键词：
polymer electrolyte fuel cells; gas diffusion layers; microporous layer; double-sided coating; contact resistance; porosity; MICRO-POROUS LAYER; PREDICTING CONTACT RESISTANCE; COMPOSITE CARBON-BLACK; BIPOLAR PLATE; ELECTRICAL CONTACT; TRANSPORT; CONDUCTIVITY; BULK; PERMEABILITY; PERFORMANCE;
D O I：
10.3390/en16114363
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A new three-dimensional numerical model of a polymer electrolyte fuel cell (PEFC) with a single straight channel was developed to primarily investigate the important impact of the double-sided microporous layer (MPL) coating on the overall performance of the fuel cell and the distribution of the current and the oxygen concentration within the cathode gas diffusion layers (GDLs). Realistic experimentally estimated interfacial contact resistance values between the gas diffusion layer and each of the bipolar plates and the catalyst layer values were incorporated into the model, and parametric studies were performed. The results showed that the double-sided MPL coating could significantly improve the fuel cell performance by up to 30%. Additionally, it was shown that the neglect of the contact resistance between the MPL and the catalyst layer could overestimate the fuel cell performance by up to 6%. In addition, the results showed that the fuel cell performance and the distribution of the current and oxygen are more sensitive to the porosity of the MPL facing the bipolar plate than the porosity of the MPL facing the catalyst layer. All the above results are presented and critically discussed in detail.
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页数：16
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