Effect of the Chemical Order on the Electrocatalytic Activity of Model PtCo Electrodes in the Oxygen Reduction Reaction | Sciact - CRIS-system of Boreskov Institute of Catalysis

Effect of the Chemical Order on the Electrocatalytic Activity of Model PtCo Electrodes in the Oxygen Reduction Reaction Full article

Journal

Electrochimica Acta
ISSN: 0013-4686 , E-ISSN: 1873-3859

Output data

Year: 2013, Volume: 108, Pages: 605-616 Pages count : 12 DOI: 10.1016/j.electacta.2013.07.038

Tags

Adiabatic electron transfer, Density functional theory, Electrocatalysis, Ordered PtCo alloys, Oxygen reduction reaction, Spin effects

Authors

Lebedeva Marina V. ¹ , Pierron-Bohnes Veronique ² , Goyhenex Christine ² , Papaefthimiou Vasiliki ¹ , Zafeiratos Spyridon ¹ , Nazmutdinov Renat R. ⁴ , Da Costa Victor ² , Acosta Manuel ² , Zosiak Lukasz ^2,3 , Kozubski Rafal ³ , Muller Dominique ⁵ , Savinova Elena R. ¹

Affiliations

1	ICPEES, UMR 7515 du CNRS-Université de Strasbourg, 25 Rue Becquerel, 67087 Strasbourg, France
2	IPCMS, UMR 7504 CNRS-Université de Strasbourg, 23 rue du Loess BP 43, 67034 Strasbourg Cedex 2, France
3	M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Krakow, Poland
4	Kazan National Research Technological University, K. Marx Str. 68, 420015 Kazan, Republic Tatarstan, Russian Federation
5	ICube, Université de Strasbourg and CNRS, 23 rue du Loess, 67037 Strasbourg Cedex 2, France

Funding (2)

1	Russian Foundation for Basic Research	11-03-01186
2	The French National Research Agency	ANR-07-NANO-018-04

PtCo alloys have long been known to possess higher activity in the electrochemical oxygen reduction reaction compared to pure Pt. This work addresses the influence of the chemical order on the electrocatalytic activity of PtCo alloy, the phenomenon, which has been already documented in the literature but yet poorly understood. Single crystalline PtCo(0 0 1) alloy films were epitaxially grown on Mg(0 0 1) substrates and used as model electrodes to study the influence of the chemical order on the electrochemical oxygen reduction reaction. Electrodes with close Pt:Co atomic ratios in the bulk and near surface region show grossly different electrocatalytic activities against the chemical order, the ordered L10 phase being ca. 7 times more active than the disordered fcc A1 structure. Electronic structure calculations and quantum mechanical theory of electron transfer are utilized to provide a rational for this remarkable phenomenon.

Lebedeva M.V. , Pierron-Bohnes V. , Goyhenex C. , Papaefthimiou V. , Zafeiratos S. , Nazmutdinov R.R. , Da Costa V. , Acosta M. , Zosiak L. , Kozubski R. , Muller D. , Savinova E.R.
Effect of the Chemical Order on the Electrocatalytic Activity of Model PtCo Electrodes in the Oxygen Reduction Reaction
Electrochimica Acta. 2013. V.108. P.605-616. DOI: 10.1016/j.electacta.2013.07.038 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	May 28, 2013
Accepted:	Jul 10, 2013
Published online:	Jul 12, 2013
Published print:	Oct 1, 2013

Web of science:	WOS:000328014000080
Scopus:	2-s2.0-84884261833
Elibrary:	20455942
Chemical Abstracts:	2013:1639426
Chemical Abstracts (print):	159:706762
OpenAlex:	W1976604900

DB	Citing
Web of science	43
Scopus	44
Elibrary	48
OpenAlex	44