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PEM fuel cells often face struggles with flooding issues, which is indispensable due to liquid products. Thus, this work presents the diagnosis of flooding in advance through tracking voltage and impedance.
My role in this project was observing electrochemical parameters upon flooding phenomena. The voltage and impedance fluctuated with periodic tendency before flooding occurs. This behavior was demonstrated by video recording, voltage, and impedance, which was purging residual water at the cathode, thereby securing reactant pathways onto the catalyst layer. To this end, I designed transparent PEM fuel cells and prepared an entire experimental setup involving video recording, analysis, and editing with my colleagues (H. Choi and J. Kim).
Progress & achievements in this research:
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Visualization of PEM fuel cells by a transparent cell for diagnosing flooding phenomenon in advance. Demonstration of flooding-induced performance enhancement by video recording, and analyzing voltage and impedance parameters. (May 2020 - Sep 2021)
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Paper
H. Choi, J. Kim, Obeen Kwon, H. Yoo, H. Kim, H. Cha, T. Park*, “Observation of flooding-induced performance enhancement in PEMFCs”, Int. J. Hydrogen Energy 47, 6259 (2022) [Link]
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Project