Liu, Taikai and Reissner, Regine and Schiller, Günter and Ansar, Asif (2017) Experimental and Numerical Study of the Effect of Gas-Shrouded Plasma Spraying on Cathode Coating of Alkaline Electrolysis Cells. Journal of Thermal Spray Technology. Springer. doi: 10.1007/s11666-017-0654-2. ISSN 1059-9630.
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Official URL: https://link.springer.com/article/10.1007/s11666-017-0654-2
Abstract
The aim of this work is to improve the performance of electrodes prepared via atmospheric plasma spray by means of gas shrouding which is expected to apparently reduce the oxygen content of the plasma plume and subsequently improve the coating quality. Electrodes with dual-layer coating for alkaline water electrolysis were deposited on Ni-coated perforated substrates. Microstructure and morphology were studied by SEM. Element content was measured by EDS. Enthalpy probe was employed for measuring plasma temperature and velocity as well as the gas composition. For verifying and better understanding the shrouding effect numerical calculation was carried out according to the experimental settings. Electrochemical test was carried out to validate the shrouding effect. The results showed slight protecting effect of gas shrouding on plasma plume and the final coating. Overall the dual-layer region, the measured oxygen fraction was 3.46% and 3.15% for the case without gas shrouding and with gas shrouding respectively. With gas shrouding the coating exhibited similar element contents as the coating sprayed by VPS while no obvious improvement was observed in the microstructure or the morphology. Evident electrochemical improvement was nevertheless achieved that with gas shrouding the electrode exhibited similar performance as that of the VPS sprayed electrode.
Item URL in elib: | https://elib.dlr.de/117744/ | ||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||
Title: | Experimental and Numerical Study of the Effect of Gas-Shrouded Plasma Spraying on Cathode Coating of Alkaline Electrolysis Cells | ||||||||||||||||||||
Authors: |
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Date: | 9 November 2017 | ||||||||||||||||||||
Journal or Publication Title: | Journal of Thermal Spray Technology | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||
DOI: | 10.1007/s11666-017-0654-2 | ||||||||||||||||||||
Publisher: | Springer | ||||||||||||||||||||
ISSN: | 1059-9630 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | atmospheric plasma spray; gas shrouding; alkaline water electrolyser; Computational fluid dynamics; hydrogen evolution reaction | ||||||||||||||||||||
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: | Liu, Taikai | ||||||||||||||||||||
Deposited On: | 22 Dec 2017 11:18 | ||||||||||||||||||||
Last Modified: | 08 Nov 2023 15:04 |
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