Spillover mechanism for hydrogen storage

Wednesday, 13 April 2016


George M. Psofogiannakis and George E. Froudakis

George M. Psofogiannakis and George E. Froudakis In this feature article, the atomic-scale understanding of the hydrogen spillover mechanism for hydrogen storage in metal-doped carbon materials and metal-organic frameworks is discussed by critically assessing recent computational and experimental studies. It is argued that the spillover mechanism involves: (a) the generation and desorption of mobile H atoms on the metal nanoparticles (b) the diffusion of H atoms in weakly-bound states on the support (c) the sticking and immobilization of H atoms at preferential locations of the receptor where barriers to sticking are decreased, and, (d) the Eley-Rideal recombination of the adsorbed H atoms with diffusing mobile H atoms to form H2. The implications and open questions on the mechanism and effectiveness of hydrogen storage by spillover are critically assessed.


english greek
Δευτέρα, 16 Ιουλίου 2018
Powered by Elxis-Open Source CMS - Copyright(C)2011 Department of Chemistry, University of Crete. All rights reserved.