In:
ECS Transactions, The Electrochemical Society, Vol. 25, No. 23 ( 2010-02-22), p. 79-87
Abstract:
Adsorption of halogen atoms (Cl, Br and I) on Pt(111), Pd(111) and palladium monolayer electrocatalysts surfaces was investigated using periodic DFT-GGA calculations. The adsorption trends were established and possible consequences of halogen adsorption on the electrocatalytic activity of surfaces were discussed. The nature of halogen-metal bonding was investigated too, using Δd-PDOS analysis. A large covalent contribution in bonding of all three studied halogen atoms was found. Surface mobility of adatoms along the Pd-terminated surfaces was estimated. It was found that the mobility decreases with the increase in surface strain. Finally, for vibrational frequencies of adsorbed halogens, a pronounced dependence on the surface electronic structure was demonstrated.
Type of Medium:
Online Resource
ISSN:
1938-5862
,
1938-6737
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2010
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