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All Journal International Journal of Renewable Energy Development
Tan-Thich Do
Department of Electrical and Mechatronics, Lac Hong University, Vietnam
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Optimization of energy efficiency and purge strategy of an open-cathode PEMFC stack with a dead-end anode configuration Tan-Thich Do; Trung-Kien Vi; Phuoc-Dong Doan
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62153

Abstract

Nowadays, proton exchange membrane fuel cells (PEMFCs) are acknowledged as promising energy solutions toward reaching net-zero emissions by 2050 due to their highlighted properties. To enhance electrochemical reactions and improve hydrogen utilization, the dead-end anode (DEA) configuration was employed to investigate the voltage and energy efficiency of an open-cathode PEMFC stack (100 W-20 cells) at optimal fan speed. The results show that when the operating current and purge interval increased, the stack voltage decreased owing to water impurities, water, and nitrogen buildup in the flow field anode channel. At optimal purge intervals of 540, 360, 280, and 60 s, the energy efficiency was achieved at 45.55%, 45.31%, 43.11%, and 35.05%, respectively. Compared to a previous study, these values represent increases of 25.22%, 12.91%, 9.15%, and 2.09% for operating currents of 1, 3, 5, and 8 A, respectively. These improvements were achieved by optimizing the fan speed, purge interval, and microcontroller unit power consumption. Finally, a hydrogen purge strategy was developed to optimize energy efficiency, considering voltage stability and hydrogen consumption. This study provides meaningful insights into optimizing the energy efficiency of open-cathode PEMFC stacks across various load levels.
Co-Authors Phuoc-Dong Doan Trung-Kien Vi