Hydrogen evolution and oxidation - a prototype for an electrocatalytic reaction

ELISABETH SANTOS; ANGELICA LUNDIN; KAY POETTING; PAOLA QUAINO; WOLFGANG SCHMICKLER

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (PRINT)

Springer

Lugar: Heidelberg; Año: 2009 vol. 13 p. 1101 - 1109

1432-8488

Due to progress in the theory of electrocatalysis and in quantum chemistry, it has become possible to investigate the hydrogen reaction and perform quantitative calculations for the reaction rate. First, we demonstrate this with model calculations for the adsorption of hydrogen on Pt(111). In accordance with experimental data, we find hydrogen adsorption at a potential above the equilibrium potential and with an almost vanishing energy of activation. As a second example, we explain trends in the catalytic activity of palladium overlayers and clusters on Au(111) electrodes.