Trends in the Exchange Current for Hydrogen Evolution
Jens K. NørskovDepartment of Physics, Center for Atomic-scale Materials Physics, Technical University of Denmark, DK-2800 Lyngby, DenmarkThomas BligaardDepartment of Physics, Center for Atomic-scale Materials Physics, Technical University of Denmark, DK-2800 Lyngby, DenmarkÁ. LogadóttirDepartment of Physics, Center for Atomic-scale Materials Physics, Technical University of Denmark, DK-2800 Lyngby, DenmarkJohn R. KitchinDepartment of Chemical Engineering, University of Delaware, Newark, Delaware 19716, USAJ.G. ChenDepartment of Chemical Engineering, University of Delaware, Newark, Delaware 19716, USAStanislav PandelovDepartment of Physics, Technical University Munich, D-85748 Garching, GermanyUlrich StimmingDepartment of Physics, Technical University Munich, D-85748 Garching, Germany
2005en
ABI
Аннотация
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.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 9Использованных источников: 0