NDLI: Unusual surface mass changes in the course of the oxygen reduction reaction on platinum and their explanation by using a kinetic model

Content Provider	Springer Nature Link
Author	Kriston, A. Berkes, B. B. Simon, P. L. Inzelt, G. Dobos, K. Nemes, A.
Copyright Year	2011
Abstract	An unusual change of the surface mass with time has been observed during the oxygen reduction reaction on Pt using chronopotentiometry and simultaneous electrochemical quartz crystal nanobalance measurements. A simplified kinetic model of Damjanovic and Brusic, which involves two electrochemical and a chemical step, was analyzed using phase plane analysis. The theoretical analysis predicted that bistability might occur in this system at a certain set of parameter values. The mathematical simulation of the different trajectories explained well the strong influence of the starting potential and the current density on the change of the surface mass observed. Evidence was found that the surface coverage can increase at lower potentials, which can lead to the formation of hydrogen peroxide even if it is energetically unfavorable.
Starting Page	1723
Ending Page	1732
Page Count	10
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	16
Issue Number	4
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-11-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ORR Platinum EQCN Simulation Bifurcation Physical Chemistry Characterization and Evaluation of Materials Energy Storage Condensed Matter Physics Analytical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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