Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Oxygen reduction at carbon supported lanthanides: the role of the B-site

Celorrio, Veronica, Dann, Ellie, Calvillo, Laura, Morgan, David John ORCID:, Hall, Simon and Fermin, David J. 2016. Oxygen reduction at carbon supported lanthanides: the role of the B-site. ChemElectroChem 3 (2) , pp. 283-291. 10.1002/celc.201500440

Full text not available from this repository.


The kinetics of the oxygen reduction reaction (ORR) at carbon supported transition metal oxides in alkaline solutions is systematically investigated as a function of the nature of the B-site. The study is focused on LaBO3 (B = Cr, Co, Fe, Mn and Ni) nanoparticles synthesized by an ionic liquid route, offering fine control over phase purity and composition. Activity towards the ORR was compared with commercial Pt/Etek catalyst. Detailed electrochemical analysis employing a rotating ring-disc electrode provides conclusive evidences that the carbon support plays an important contribution in the faradaic responses. Decoupling the contribution of the carbon support uncovers that the reactivity of LaMnO3 towards the 4e- ORR pathway is orders of magnitude higher than for the other lanthanides. We rationalise these observations in terms of changes in the redox state at the B-site close to the formal oxygen reduction potential.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Publisher: Wiley-Blackwell
ISSN: 2196-0216
Date of Acceptance: 23 November 2015
Last Modified: 31 Oct 2022 09:53

Citation Data

Cited 59 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item