Theoretical evaluation of diffusivity of hydrogen in palladium and rhodium

Abstract

A formulation is developed for obtaining diffusivities of hydrogen in f.c.c. metals from cluster calculations of activation energies. Results for palladium compare reasonably well with medium temperature experimental values. A theoretical diffusivity curve is also suggested for hydrogen in rhodium. (C) 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.