Repository logo
 
Publication

Highly porous NiFe nanofoams synthesized by dynamic hydrogen bubble template for hydrogen evolution in alkaline media

2025-04Research article Open access
Simple item page
authorProfile.emailbiblioteca@isel.pt
datacite.subject.fosCiências Naturais::Matemáticas
dc.contributor.authorCarvalho, Gabriel Garcia
dc.contributor.authordo Nascimento, Ricardo Espingardas
dc.contributor.authorMorais Silva, Teresa
dc.contributor.authorMontemor, Maria de Fátima
dc.date.accessioned2025-05-30T12:46:38Z
dc.date.available2025-05-30T12:46:38Z
dc.date.issued2025-04
dc.description.abstractWhen coupled with renewable energy sources, alkaline electrolysis (AEL) is a clean technology to produce hydrogen. The conventional electrodes that have been established as the commercial standard for AEL are perforated nickel plates, which have low surface area and high mass loads of active material. The use of Ni has been associated with the adsorption of protons and their recombination into H2 molecules, assisting and enabling the hydrogen evolution reactions. Due to the rising Ni price, there is a demand for less expensive electrode materials with identical, or better, performance. Thus, this work explores new alternative electrode materials and combines Ni with a cheaper and also electroactive metal, iron. For this purpose, highly porous bimetallic nanofoams are produced through the dynamic hydrogen bubble template. NiFe electrodes of different compositions are characterized by scanning electron microscopy, energy-dispersive spectroscopy, linear sweep voltammetry, and chronopotentiometry analysis. The results allow obtaining key parameters that are essential for the optimization of the electrode's response considering overpotentials, Tafel slopes, and other electrochemically relevant parameters.eng
dc.identifier.citationCarvalho, G. G., Nascimento, R. E., Silva, M. T., & Montemor, M. F. (2025). Highly porous NiFe nanofoams synthesized by dynamic hydrogen bubble template for hydrogen evolution in alkaline media. Small Structures, 1-10. https://doi.org/10.1002/sstr.202400591
dc.identifier.doihttps://doi.org/10.1002/sstr.202400591
dc.identifier.eissn2688-4062
dc.identifier.urihttp://hdl.handle.net/10400.21/21890
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWlley
dc.relationUIDB/00100/2020
dc.relationUIDP/00100/2020
dc.relationLA/P/0056/2020
dc.relation.hasversionhttps://onlinelibrary.wiley.com/doi/epdf/10.1002/sstr.202400591
dc.relation.ispartofseries2400591
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAlkaline electrolysis
dc.subjectDynamic hydrogen bubble template electrodeposition
dc.subjectHnhydrogen evolution
dc.subjectNanofoams
dc.subjectNickel-iron
dc.titleHighly porous NiFe nanofoams synthesized by dynamic hydrogen bubble template for hydrogen evolution in alkaline mediaeng
dc.typeresearch article
dspace.entity.typePublication
oaire.citation.endPage10
oaire.citation.startPage1
oaire.citation.titleSmall Structures
oaire.versionhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43
person.familyNameMorais Silva
person.givenNameTeresa
person.identifier.orcid0000-0002-4889-8695
relation.isAuthorOfPublication778cc110-6d6b-43e0-931c-31616c73874d
relation.isAuthorOfPublication.latestForDiscovery778cc110-6d6b-43e0-931c-31616c73874d

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Highly Porous_MTSilva.pdf
Size:
1.4 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.03 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ISEL - Matemática - Artigos