dc.contributor.author |
Golvano Escobal, Irati |
dc.contributor.author |
Suriñach, Santiago |
dc.contributor.author |
Baró, M. D.. |
dc.contributor.author |
Pané i Vidal, Salvador |
dc.contributor.author |
Sort Viñas, Jordi |
dc.contributor.author |
Pellicer Vilà, Eva Maria |
dc.date |
2016 |
dc.identifier |
https://ddd.uab.cat/record/170441 |
dc.identifier |
urn:10.1016/j.electacta.2016.02.112 |
dc.identifier |
urn:oai:ddd.uab.cat:170441 |
dc.identifier |
urn:recercauab:ARE-86294 |
dc.identifier |
urn:scopus_id:84959010991 |
dc.identifier |
urn:wos_id:000372523300030 |
dc.identifier |
urn:oai:egreta.uab.cat:publications/3be856ee-165c-4d78-b845-4a8c4d02bf0a |
dc.identifier |
urn:articleid:18733859v194p263 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
European Commission 648454 |
dc.relation |
European Commission 336456 |
dc.relation |
Ministerio de Economía y Competitividad MAT2014-57960-C3-1-R |
dc.relation |
Ministerio de Economía y Competitividad RYC-2012-10839 |
dc.relation |
Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015 |
dc.relation |
Electrochimica acta ; Vol. 194 (Marzo 2016), p. 263-275 |
dc.rights |
open access |
dc.rights |
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
dc.rights |
https://creativecommons.org/licenses/by-nc-nd/3.0/ |
dc.subject |
Nanoparticles |
dc.subject |
Electrodeposition |
dc.subject |
Hydrogen evolution reaction |
dc.subject |
Rhodium-iron |
dc.title |
Electrodeposition of sizeable and compositionally tunable rhodium-iron nanoparticles and their activity toward hydrogen evolution reaction |
dc.type |
Article |
dc.description.abstract |
Rh-Fe nanoparticles (NPs) with variable Rh/Fe ratios have been obtained by direct current electrodeposition onto Au-metalized Si/Ti substrates from an electrolyte containing Rh(III) and Fe(III) chloride salts. NP mean diameter could be varied in the range of 20-80 nm by playing with the applied current density (-j = 0.5-2 mA cm-2) and deposition times (t = 200-3200 s). NPs were very well adhered to the substrate and became progressively enriched in Fe as the absolute value of the current density increased. X-ray photoelectron spectroscopy analyses revealed that the NPs are mostly metallic. The oxygen signal detected at surface level is relatively high but reduces down to less than 1 at% after 1 min Ar ions sputtering. The as-deposited Rh-Fe NPs are active toward hydrogen evolution reaction in alkaline medium. Different values of the onset potential for water reduction have been observed depending on the j and t values applied for NPs growth. Cycling stability tests reveal that NPs do not suffer from excessive deterioration of their electrocatalytic activity with time. |