dc.contributor.author |
Luo, Zhishan |
dc.contributor.author |
Irtem, Erdem |
dc.contributor.author |
Ibáñez, Maria |
dc.contributor.author |
Nafria, Raquel |
dc.contributor.author |
Martí-Sánchez, Sara |
dc.contributor.author |
Genç, Aziz |
dc.contributor.author |
De La Mata, Maria |
dc.contributor.author |
Liu, Yu. |
dc.contributor.author |
Cadavid, Doris |
dc.contributor.author |
Llorca, Jordi |
dc.contributor.author |
Arbiol i Cobos, Jordi |
dc.contributor.author |
Andreu, Teresa |
dc.contributor.author |
Morante, Joan Ramon |
dc.contributor.author |
Cabot, Andreu |
dc.date |
2016 |
dc.identifier |
https://ddd.uab.cat/record/195654 |
dc.identifier |
urn:10.1021/acsami.6b02786 |
dc.identifier |
urn:oai:ddd.uab.cat:195654 |
dc.identifier |
urn:scopus_id:84978916730 |
dc.identifier |
urn:articleid:19448252v8n27p17435 |
dc.identifier |
urn:wos_id:000379794100051 |
dc.identifier |
urn:oai:egreta.uab.cat:publications/dcf2f90b-50a2-4ac7-94a0-635c10f42b89 |
dc.identifier |
urn:icn2uab:6089230 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
Ministerio de Economía y Competitividad ENE2013-46624-C4-3-R |
dc.relation |
Ministerio de Economía y Competitividad MAT2014-59961 |
dc.relation |
Ministerio de Economía y Competitividad MAT2014-59961-C2-2-R |
dc.relation |
Ministerio de Economía y Competitividad ENE2012-3651 |
dc.relation |
Agència de Gestió d'Ajuts Universitaris i de Recerca FI-2013-B-0076 |
dc.relation |
Agència de Gestió d'Ajuts Universitaris i de Recerca 2013BP-A00344 |
dc.relation |
Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 |
dc.relation |
ACS applied materials & interfaces ; Vol. 8, Issue 27 (July 2016), p. 17435-17444 |
dc.rights |
open access |
dc.rights |
Tots els drets reservats. |
dc.rights |
https://rightsstatements.org/vocab/InC/1.0/ |
dc.subject |
Cation exchange |
dc.subject |
Cobalt oxide |
dc.subject |
Colloidal |
dc.subject |
Electrocatalysis |
dc.subject |
Manganese oxide |
dc.subject |
Nanoparticle |
dc.subject |
OER |
dc.subject |
ORR |
dc.title |
Mn₃O₄@CoMn₂O₄-CoₓOy nanoparticles : Partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions |
dc.type |
Article |
dc.description.abstract |
Mn₃O₄@CoMn₂O₄ nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one-pot two-step synthesis protocol involving the cation exchange of Mn by Co in preformed Mn₃O₄ NPs. Selecting the proper cobalt precursor, the nucleation of CoₓOy crystallites at the Mn₃O₄@CoMn₂O₄ surface could be simultaneously promoted to form Mn₃O₄@CoMn₂O₄-CoₓOy NPs. Such heterostructured NPs were investigated for oxygen reduction and evolution reactions (ORR, OER) in alkaline solution. Mn₃O₄@CoMn₂O₄-CoₓOy NPs with [Co]/[Mn] = 1 showed low overpotentials of 0.31 V at −3 mA·cm-2 and a small Tafel slope of 52 mV·dec-1 for ORR, and overpotentials of 0.31 V at 10 mA·cm-2 and a Tafel slope of 81 mV·dec-1 for OER, thus outperforming commercial Pt-, IrO2-based and previously reported transition metal oxides. This cation-exchange-based synthesis protocol opens up a new approach to design novel heterostructured NPs as efficient nonprecious metal bifunctional oxygen catalysts. |