Abstract
A density functional theory database of hydrogen chemisorption energies on close packed surfaces of a number of transition and noble metals is presented. The bond energies are used to understand the trends in the exchange current for hydrogen evolution. A volcano curve is obtained when measured exchange currents are plotted as a function of the calculated hydrogen adsorption energies and a simple kinetic model is developed to understand the origin of the volcano. The volcano curve is also consistent with Pt being the most efficient electrocatalyst for hydrogen evolution.
Original language | English |
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Pages (from-to) | J23-J26 |
Journal | Journal of the Electrochemical Society |
Volume | 152 |
Issue number | 3 |
DOIs | |
State | Published - 2005 |