konjes

Konya Journal of Engineering Sciences

2667-8055

Konya Technical University

10.36306/konjes.1664992

Energy Generation, Conversion and Storage (Excl. Chemical and Electrical)

Enerji Üretimi, Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç)

EFFECTS OF INLET GAS MIXTURE ON THE PERFORMANCE OF PEMFC WITH REDUCED MEMBRANE THICKNESS: 3D CFD STUDY

https://orcid.org/0000-0003-2675-9229

Kaplan

Mahmut

GAZIANTEP UNIVERSITY

09 01 2025

13 3 753 765 03 25 2025 06 16 2025

2004

Konya Journal of Engineering Sciences

In the present study, the influences of inlet gas species concentrations on the performance of PEMFC with reduced membrane thickness (0.027 mm) are explored via ANSYS Fluent PEMFC module at 0.4 V and 0.6 V. Water, oxygen and hydrogen mass fractions are in the range of 0.12-0.20, 0.1-0.24 and 0.1-0.6, respectively. The results reveal that decreasing hydrogen and increasing water at the entrance of the cell with a thin membrane lead to enhancement of power output. The maximum current density of 4.67 A/cm2 is attained by the configuration including water and oxygen mass fractions of 0.2 at the cathode for 0.4 V. Since this configuration provides lower pressure drop in the channels in comparison to the base model, it is determined as the optimal combination of gas mass fractions.

PEM Fuel Cell Inlet Gases Computational Fluid Dynamics Cell Performance Pressure Loss Optimal Gas Mixture

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