English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/159723
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Mn3O4@CoMn2O4-CoxOy nanoparticles: partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions

AuthorsLuo, ZhiShan; Ibáñez, Maria; Nafria, Raquel; Martí-Sànchez, Sara ; Genç, Aziz ; Mata, Maria de la ; Arbiol, Jordi ; Morante, Joan Ramon; Cabot, Andreu
KeywordsORR
Manganese oxide
Nanoparticle
OER
Cation exchange
Cobalt oxide
Colloidal
Electrocatalysis
Issue Date2016
PublisherAmerican Chemical Society
CitationACS Applied Materials and Interfaces 8(27): 17435-17444 (2016)
AbstractMnO@CoMnO 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 MnO NPs. Selecting the proper cobalt precursor, the nucleation of CoO crystallites at the MnO@CoMnO surface could be simultaneously promoted to form MnO@CoMnO-CoO NPs. Such heterostructured NPs were investigated for oxygen reduction and evolution reactions (ORR, OER) in alkaline solution. MnO@CoMnO-CoO NPs with [Co]/[Mn] = 1 showed low overpotentials of 0.31 V at -3 mA·cm and a small Tafel slope of 52 mV·dec for ORR, and overpotentials of 0.31 V at 10 mA·cm and a Tafel slope of 81 mV·dec for OER, thus outperforming commercial Pt-, IrO-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.
Descriptionet al.
Publisher version (URL)https://doi.org/10.1021/acsami.6b02786
URIhttp://hdl.handle.net/10261/159723
Identifiersdoi: 10.1021/acsami.6b02786
e-issn: 1944-8252
issn: 1944-8244
Appears in Collections:(CIN2) Artículos
Files in This Item:
File Description SizeFormat 
Mn3O4.pdf970,84 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.