Local Current Density and Electrochemical Impedance Measurements within 50 cm Single-Channel PEM Electrolysis Cell

Download statistics - Document (COUNTER):

Immerz, C.; Bensmann, B.; Trinke, P.; Suermann, M.; Hanke-Rauschenbach, R.: Local Current Density and Electrochemical Impedance Measurements within 50 cm Single-Channel PEM Electrolysis Cell. In: Journal of the Electrochemical Society 165 (2018), Nr. 16, S. F1292-F1299. DOI: https://doi.org/10.1149/2.0411816jes

Repository version

To cite the version in the repository, please use this identifier: https://doi.org/10.15488/4911

Selected time period:

year: 
month: 

Sum total of downloads: 366




Thumbnail
Abstract: 
The present analysis shows the local distribution of current density and EIS measurements along a 50 cm single-channel proton exchange membrane water electrolysis (PEMWE) cell. Measurements for operating modes with one sufficiently high and one insufficiently low stoichiometric water ratio (lambda) were carried out to observe effects on the current density distribution. Furthermore, global and local EIS measurements were performed to distinguish between the cell voltage loss differences in the two cases. The mass transport losses.mtx and the Ohmic voltage losses eta Omega show a strong increase, when the stoichiometric water ratio falls below a level of lambda approximate to 5. The reduction of the inlet water flux of the anode reduces both the proton conductivity of the ionomer within the catalyst layer and the membrane, increasing transport and Ohmic resistances, respectively. The local analysis has shown that the level of membrane and catalyst hydration under low stoichiometric conditions can be distributed highly non-homogeneous in along-the-channel direction, with the most pronounced dehydration toward the end of the channel.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Elektrotechnik und Informatik

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 178 48.63%
2 image of flag of United States United States 65 17.76%
3 image of flag of China China 37 10.11%
4 image of flag of Korea, Republic of Korea, Republic of 15 4.10%
5 image of flag of Japan Japan 10 2.73%
6 image of flag of Ukraine Ukraine 7 1.91%
7 image of flag of France France 7 1.91%
8 image of flag of Canada Canada 7 1.91%
9 image of flag of Burundi Burundi 7 1.91%
10 image of flag of No geo information available No geo information available 4 1.09%
    other countries 29 7.92%

Further download figures and rankings:


Hinweis

Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.

Search the repository


Browse