NDLI: Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance

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Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance

Content Provider	MDPI
Author	Choi, Yena Lee, Woojung Na, Youngseung
Copyright Year	2021
Description	Water electrolysis is an eco-friendly method for the utilization of renewable energy sources which provide intermittent power supply. Proton exchange membrane water electrolysis (PEMWE) has a high efficiency in this regard. However, the two-phase flow of water and oxygen at the anode side causes performance degradation, and various operating conditions affect the performance of PEMWE. In this study, the effects of four control parameters (operating temperature, flow rate, cell orientation, and pattern of the channel) on the performance of PEMWE were investigated. The effects of the operating conditions on its performance were examined using a 25 $cm^{2}$ single-cell. Evaluation tests were conducted using in situ methods such as polarization curves and electrochemical impedance spectroscopy. The results demonstrated that a high operating temperature and low flow rate reduce the activation and ohmic losses, and thereby enhance the performance of PEMWE. Additionally, the cell orientation affects the performance of PEMWE owing to the variation in the two-phase flow regime. It was observed that the slope of specific sections in the polarization curve rapidly increases at a specific cell voltage.
Starting Page	822
e-ISSN	20770375
DOI	10.3390/membranes11110822
Journal	Membranes
Issue Number	11
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-10-27
Access Restriction	Open
Subject Keyword	Membranes Environmental Engineering Two-phase Flow Cell Orientation Single Serpentine Quintuple Serpentine Bubble Coverage Water Electrolysis Operating Temperature Flow Rate Channel Pattern
Content Type	Text
Resource Type	Article

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