Details
| Original language | English |
|---|---|
| Article number | 094507 |
| Number of pages | 12 |
| Journal | Journal of the Electrochemical Society |
| Volume | 170 |
| Issue number | 9 |
| Publication status | Published - 30 Sept 2023 |
Abstract
This work presents a platinum wire micro-reference electrode suitable for recording in-operando individual electrochemical impedance spectra of both the anode and the cathode in a proton exchange membrane water electrolyzer. The setup enables the protonic membrane potential to be accessed outside the active area. The reference electrode allows for the analysis of kinetic parameters for anode and cathode reactions separately. However, the exact location of the measured membrane potential is unknown due to a potentially asymmetric potential distribution, which makes the calculation of exact kinetic parameters non-trivial. Qualitative analyses of the potential distribution behavior over temperature, cell compression, and current density are shown.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Surfaces, Coatings and Films
- Chemistry(all)
- Electrochemistry
- Materials Science(all)
- Materials Chemistry
Sustainable Development Goals
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In: Journal of the Electrochemical Society, Vol. 170, No. 9, 094507, 30.09.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Adaptation of a PEMFC Reference Electrode to PEMWE
T2 - Possibilities and Limitations
AU - Bühre, Lena V.
AU - McLeod, Alexander J.
AU - Trinke, Patrick
AU - Bensmann, Boris
AU - Benecke, Mareike
AU - Herrera, Omar E.
AU - Mérida, Walter
AU - Hanke-Rauschenbach, Richard
N1 - Funding Information: The authors gratefully acknowledge the financial support by the Federal Ministry of Economic Affairs and Climate Action of Germany in the framework of HoKaWe (03EI3029B), Ray Bi, for ink preparation for Pt patches and support in spray coating, Yu Pei for fruitful discussion on reference electrodes (both Department of Chemical and Biological Engineering at the Clean Energy Research Centre, University of British Columbia), Jonathan Brandt, Institute of Electric Power Systems, LUH, for knowledge and support in global optimizations, Grace Lindquist, Department of Chemistry and Biochemistry, University of Oregon, for fruitful discussion on reference electrode implementations. This research was partly funded by a doctoral scholarship from the DAAD-Stiftung to the first author.
PY - 2023/9/30
Y1 - 2023/9/30
N2 - This work presents a platinum wire micro-reference electrode suitable for recording in-operando individual electrochemical impedance spectra of both the anode and the cathode in a proton exchange membrane water electrolyzer. The setup enables the protonic membrane potential to be accessed outside the active area. The reference electrode allows for the analysis of kinetic parameters for anode and cathode reactions separately. However, the exact location of the measured membrane potential is unknown due to a potentially asymmetric potential distribution, which makes the calculation of exact kinetic parameters non-trivial. Qualitative analyses of the potential distribution behavior over temperature, cell compression, and current density are shown.
AB - This work presents a platinum wire micro-reference electrode suitable for recording in-operando individual electrochemical impedance spectra of both the anode and the cathode in a proton exchange membrane water electrolyzer. The setup enables the protonic membrane potential to be accessed outside the active area. The reference electrode allows for the analysis of kinetic parameters for anode and cathode reactions separately. However, the exact location of the measured membrane potential is unknown due to a potentially asymmetric potential distribution, which makes the calculation of exact kinetic parameters non-trivial. Qualitative analyses of the potential distribution behavior over temperature, cell compression, and current density are shown.
UR - http://www.scopus.com/inward/record.url?scp=85174565292&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/acfac2
DO - 10.1149/1945-7111/acfac2
M3 - Article
AN - SCOPUS:85174565292
VL - 170
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 9
M1 - 094507
ER -