Electrocatalysis kinetics

Stamenkovic V, Schmidt TJ, Markovic NM, Ross PN Jr. 2002. Surface composition effects in electrocatalysis Kinetics of oxygen reaction on well defined PtsNi and PtsCo alloy surfaces. J Phys Chem B 106 11970-11979. 

Stamenkovic V, Schmidt TJ, Ross PN, Markovic NM (2003) Surface segregation effects in electrocatalysis kinetics of oxygen reduction reaction on polycrystaUine Pt Ni alloy surfaces. J Electroanal Chem (Lausanne Switz) 554 191... 

Surface composition effects in electrocatalysis kinetics of oxygen reduction on well-defined Pt3Ni and Pt3Co alloy surfaces. J. Phys. Chem. B, 106, 11970-11979. 

Effective core potential, 269 Effective double layer characterization of, 189 isotherm, 306, 315 kinetic expressions, 316 observations of with STM, 259 stability of, 225, 351, 503 Effectiveness factor of promotion computation of, 505 definition of, 505 Electrocatalysis... 

In electrocatalysis, in contrast to electrochemical kinetics, the rate of an electrochemical reaction is examined at constant external control parameters so as to reveal the influence of the catalytic electrode (its nature, its surface state) on the rate constants in the kinetic equations. 

Lebedeva NP, Koper MTM, FeUu JM, van Santen RA. 2002c. Role of crystalline defects in electrocatalysis Mechanism and kinetics of CO adlayer oxidation on stepped platinum electrodes. J Phys Chem B 106 12938-12947. 

Adzic RR. 1998. Recent advances in the kinetics of oxygen reduction. In Lipkowski J, Ross PN, eds. Electrocatalysis. New York Wiley-VCH. 

Sriramulu S, Jarvi TD, Stuve EM. 1998. A kinetic analysis of distinct reaction pathways in methanol electrocatalysis on Pt(lll). Electrochim Acta 44 1127-1134. 

Summing up this section, we would like to note that understanding size effects in electrocatalysis requires the application of appropriate model systems that on the one hand represent the intrinsic properties of supported metal nanoparticles, such as small size and interaction with their support, and on the other allow straightforward separation between kinetic, ohmic, and mass transport (internal and external) losses and control of readsorption effects. This requirement is met, for example, by metal particles and nanoparticle arrays on flat nonporous supports. Their investigation allows unambiguous access to reaction kinetics and control of catalyst structure. However, in order to understand how catalysts will behave in the fuel cell environment, these studies must be complemented with GDE and MEA tests to account for the presence of aqueous electrolyte in model experiments. 

Su YO, Kuwana T, Chen SM. 1990. Electrocatalysis of oxygen reduction by water-soluble iron porphyrins. Thermodynamic and kinetic advantage studies. J Electroanal Chem 288 177. 

Based on the results obtained in the investigation of the effects of modulation of the electron density by the nuclear vibrations, a lability principle in chemical kinetics and catalysis (electrocatalysis) has been formulated in Ref. 26. This principle is formulated as follows the greater the lability of the electron, transferable atoms or atomic groups with respect to the action of external fields, local vibrations, or fluctuations of the medium polarization, the higher, as a rule, is the transition probability, all other conditions being unchanged. Note that the concept lability is more general than... 

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