Hydrogen evolution reaction highly electrocatalyzed by MWCNT/<i>N</i>-octylpyridinum hexafluorophosphate metal-free system

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dc.contributor.authorGidi, Leyla
dc.contributor.authorArce, Roxana
dc.contributor.authorIbarra, Jose
dc.contributor.authorIsaacs, M.
dc.contributor.authorAguirre, M. J.
dc.contributor.authorRamirez, Galo
dc.date.accessioned2025-01-20T23:53:23Z
dc.date.available2025-01-20T23:53:23Z
dc.date.issued2021
dc.description.abstractA mixed electrocatalyst that consists of multi walled carbon nanotubes (MWCNTs) and the ionic liquid (IL) N-octylpyridinum hexafluorophosphate (OPyPF6) as binder (MWCNT/IL system) was used in the study of hydrogen evolution reaction. This electrocatalyst was compared to graphite/mineral oil (Gr), graphite/OPyPF6 (Gr/IL), MWCNT/mineral oil (MWCNT) systems. All systems were characterized by cyclic voltammetry determining that MWCNT/IL system is highly electrocatalytic (E onset = -0.3 V vs Ag/AgCl) in relation to the other systems studied containing MWCNT or IL separately. The presence of each of the components that form the electrodic surface is corroborated by XRD, Raman, and FESEM-EDX, and it is demonstrated by chronoamperometric analysis that MWCNT/IL system is highly stable. The efficiency of the electrode, determined by its electrocatalytic activity, is confirmed by the quantification by gas chromatography of the hydrogen produced. Moreover, an elevated TON value (16274) and faradaic efficiency close to 60% are calculated, in comparison to other electrocatalysts found in literature. All these attractive properties are complemented by the fact that the MWCNT/IL system is simple, novel and easy to prepare. (C) 2021 Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.electacta.2021.137859
dc.identifier.eissn1873-3859
dc.identifier.issn0013-4686
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2021.137859
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94959
dc.identifier.wosidWOS:000619727200004
dc.language.isoen
dc.revistaElectrochimica acta
dc.rightsacceso restringido
dc.subjectElectrocatalysis
dc.subjectCarbon nanotubes
dc.subjectIonic liquids
dc.subjectHydrogen evolution reaction
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleHydrogen evolution reaction highly electrocatalyzed by MWCNT/<i>N</i>-octylpyridinum hexafluorophosphate metal-free system
dc.typeartículo
dc.volumen372
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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