dc.contributor.author
Gebhard, Marcus
dc.contributor.author
Schnucklake, Maike
dc.contributor.author
Hilger, André
dc.contributor.author
Röhe, Maximilian
dc.contributor.author
Osenberg, Markus
dc.contributor.author
Krewer, Ulrike
dc.contributor.author
Manke, Ingo
dc.contributor.author
Roth, Christina
dc.date.accessioned
2020-03-09T12:21:15Z
dc.date.available
2020-03-09T12:21:15Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/26966
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-26727
dc.description.abstract
Porous carbon felts (CFs) are widely used electrode materials for vanadium redox flow batteries (VRFBs). These materials differ in their precursor material, thickness, or graphitization degree and demonstrate broad differences in electrochemical performance. Prior to operation, an activation step, such as acid or heat treatment (HT), is commonly performed to improve their performance. A thermal treatment in air functionalizes the surface of the electrode and improves reaction kinetics as well as the wettability of the electrode. Herein, pristine and heat‐treated CFs are compared regarding their electrolyte wetting behavior for the use in VRFB. Contact angle (CA) measurements are conducted ex situ to investigate the effect of the HT. Furthermore, the porous CFs are examined in situ with an in‐house‐built flow cell regarding their invasion behavior with different types of electrolytes by X‐ray radiography. Additionally, the distribution of the electrolyte inside the felts is investigated by X‐ray tomography. The results demonstrate the effect of the HT and choice of electrolyte on the wetting behavior and electrolyte distribution.
en
dc.format.extent
8 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
carbon felts
en
dc.subject
contact angle measurements
en
dc.subject
electrolyte wetting
en
dc.subject
thermal treatments
en
dc.subject
vanadium redox flow batteries
en
dc.subject
X-ray radiographies
en
dc.subject
X-ray tomographies
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie
dc.title
X‐ray‐computed radiography and tomography study of electrolyte invasion and distribution inside pristine and heat‐treated carbon felts for redox flow batteries
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
1901214
dcterms.bibliographicCitation.doi
10.1002/ente.201901214
dcterms.bibliographicCitation.journaltitle
Energy technology
dcterms.bibliographicCitation.number
3
dcterms.bibliographicCitation.volume
8
dcterms.bibliographicCitation.url
https://doi.org/10.1002/ente.201901214
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie / Physikalische und Theoretische Chemie
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refubium.funding
DEAL Wiley
refubium.note.author
Die Publikation wurde von der Freien Universität Berlin finanziert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2194-4288
dcterms.isPartOf.eissn
2194-4296