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

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 per...

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Autores principales:	Yena Choi, Woojung Lee, Youngseung Na
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	two-phase flow cell orientation single serpentine quintuple serpentine bubble coverage water electrolysis Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/0ddab876e3ed4b0f989735025987ba60
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spelling	oai:doaj.org-article:0ddab876e3ed4b0f989735025987ba602021-11-25T18:19:36ZEffect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance10.3390/membranes111108222077-0375https://doaj.org/article/0ddab876e3ed4b0f989735025987ba602021-10-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/822https://doaj.org/toc/2077-0375Water 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<sup>2</sup> 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.Yena ChoiWoojung LeeYoungseung NaMDPI AGarticletwo-phase flowcell orientationsingle serpentinequintuple serpentinebubble coveragewater electrolysisChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 822, p 822 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	two-phase flow cell orientation single serpentine quintuple serpentine bubble coverage water electrolysis Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	two-phase flow cell orientation single serpentine quintuple serpentine bubble coverage water electrolysis Chemical technology TP1-1185 Chemical engineering TP155-156 Yena Choi Woojung Lee Youngseung Na Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
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<sup>2</sup> 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.
format	article
author	Yena Choi Woojung Lee Youngseung Na
author_facet	Yena Choi Woojung Lee Youngseung Na
author_sort	Yena Choi
title	Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
title_short	Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
title_full	Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
title_fullStr	Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
title_full_unstemmed	Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance
title_sort	effect of gravity and various operating conditions on proton exchange membrane water electrolysis cell performance
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0ddab876e3ed4b0f989735025987ba60
work_keys_str_mv	AT yenachoi effectofgravityandvariousoperatingconditionsonprotonexchangemembranewaterelectrolysiscellperformance AT woojunglee effectofgravityandvariousoperatingconditionsonprotonexchangemembranewaterelectrolysiscellperformance AT youngseungna effectofgravityandvariousoperatingconditionsonprotonexchangemembranewaterelectrolysiscellperformance
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Effect of Gravity and Various Operating Conditions on Proton Exchange Membrane Water Electrolysis Cell Performance

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