Temperature Effects in Carbon Monoxide and Methanol Electrooxidation on Platinum–Ruthenium: Influence of Grain Boundaries | Sciact - CRIS-system of Boreskov Institute of Catalysis

Temperature Effects in Carbon Monoxide and Methanol Electrooxidation on Platinum–Ruthenium: Influence of Grain Boundaries Full article

Journal

Journal of Solid State Electrochemistry
ISSN: 1432-8488 , E-ISSN: 1433-0768

Output data

Year: 2013, Volume: 17, Number: 7, Pages: 1903-1912 Pages count : 10 DOI: 10.1007/s10008-013-2071-x

Tags

Activation energy, Carbon monoxide electrooxidation, Intercrystalline boundaries, Methanol electrooxidation, Multiple-twinned particles, PtRu catalysts

Authors

Kuznetsov Aleksey N. ^1,2 , Simonov Pavel A. ² , Zaikovskii Vladimir I. ² , Parmon Valentin N. ² , Savinova Elena R. ^1,3,4

Affiliations

1	Ecole Européenne Chimie Polymères Matériaux, UMR 7515 du CNRS-UdS-ECPM, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
2	Boreskov Institute of Catalysis, pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russian Federation
3	International Center for Frontier Research in Chemistry, University of Strasbourg, Strasbourg, France
4	Ertl center for Electrochemistry and Catalysis, GIST, Gwangju, South Korea

Funding (2)

1	The Ministry of Education and Science of the Russian Federation	8440
2	Council for Grants of the President of the Russian Federation	НШ-524.2012.3

The temperature dependence of methanol and CO monolayer oxidation is studied on carbon-supported PtRu (1:1 atomic ratio) electrodes with different metal percentages (5, 30, and 60 wt.%) in an aqueous H2SO4 electrolyte. High-resolution transmission microscopy confirms that at high (30 or 60 wt.%) metal percentage PtRu nanostructures with a high concentration of intercrystalline boundaries are formed. These nanostructures comprise multiple-twinned particles, particles with intersecting randomly oriented intergrain boundaries, or particles with parallel intergrain boundaries. Formation of such nanostructures leads to a decrease of the apparent activation energy of the methanol and CO monolayer oxidation, while the Tafel slope and the reaction order in methanol show minor dependence on the type of nanostructure. Materials with a high concentration of grain boundary regions may be of interest for practical applications in direct methanol or proton exchange fuel cells fed with reformate.

Kuznetsov A.N. , Simonov P.A. , Zaikovskii V.I. , Parmon V.N. , Savinova E.R.
Temperature Effects in Carbon Monoxide and Methanol Electrooxidation on Platinum–Ruthenium: Influence of Grain Boundaries
Journal of Solid State Electrochemistry. 2013. V.17. N7. P.1903-1912. DOI: 10.1007/s10008-013-2071-x WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Jan 6, 2013
Accepted:	Mar 20, 2013
Published online:	Apr 13, 2013
Published print:	Jul 1, 2013

Web of science:	WOS:000320888800013
Scopus:	2-s2.0-84879845426
Elibrary:	20439563
Chemical Abstracts:	2013:989670
Chemical Abstracts (print):	160:726935
OpenAlex:	W2045259500

DB	Citing
Web of science	6
Scopus	6
Elibrary	6
OpenAlex	7