Garcia-Navarro, Julio Cesar and Schulze, Mathias and Friedrich, Kaspar Andreas (2019) Measuring and modeling mass transport losses in proton exchange membrane water electrolyzers using electrochemical impedance spectroscopy. Journal of Power Sources, 431, pp. 189-204. Elsevier. doi: 10.1016/j.jpowsour.2019.05.027. ISSN 0378-7753.
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Abstract
PEM electrolysis has gained a lot of attention in recent years due to its ability to produce clean, sustainable hydrogen. One of the crucial steps toward optimizing hydrogen production is understanding the role of operating conditions on performance; in particular, understanding mass transport effects is crucial for optimizing the operation of a PEM electrolyzer. In this article we measured and modeled mass transport losses in a single-cell PEM electrolyzer, as a function of pressure and water flow, using EIS. We found that pressure and water flow cause larger mass transport losses on the cathode. Moreover, we measured a more considerable effect with pressure than with water flow, which we interpret as a consequence of pressure-dependent bubble detachment sizes and an increase in the diffusion path for bubble nucleation. Furthermore, we found a dependence of the mass transport overpotential on different MEA design parameters, such as electrode thickness.
Item URL in elib: | https://elib.dlr.de/133204/ | ||||||||||||||||
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Document Type: | Article | ||||||||||||||||
Title: | Measuring and modeling mass transport losses in proton exchange membrane water electrolyzers using electrochemical impedance spectroscopy | ||||||||||||||||
Authors: |
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Date: | 2019 | ||||||||||||||||
Journal or Publication Title: | Journal of Power Sources | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | No | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||
Volume: | 431 | ||||||||||||||||
DOI: | 10.1016/j.jpowsour.2019.05.027 | ||||||||||||||||
Page Range: | pp. 189-204 | ||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||
ISSN: | 0378-7753 | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | PEM electrolysis Mass transport losses Impedance spectroscopy Hydrogen production Electrolysis | ||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||
HGF - Program: | Storage and Cross-linked Infrastructures | ||||||||||||||||
HGF - Program Themes: | Electrolysis and Hydrogen | ||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||
DLR - Program: | E SP - Energy Storage | ||||||||||||||||
DLR - Research theme (Project): | E - Elektrochemical Processes (Electrolysis) (old) | ||||||||||||||||
Location: | Stuttgart | ||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||
Deposited By: | Friedrich, Prof.Dr. Kaspar Andreas | ||||||||||||||||
Deposited On: | 07 Jan 2020 12:55 | ||||||||||||||||
Last Modified: | 03 Nov 2023 09:19 |
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