Issue 28, 2011

Fundamental studies and perceptions on the spillover mechanism for hydrogen storage

Abstract

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.

Graphical abstract: Fundamental studies and perceptions on the spillover mechanism for hydrogen storage

Article information

Article type
Feature Article
Submitted
10 Mar 2011
Accepted
04 Apr 2011
First published
28 Apr 2011

Chem. Commun., 2011,47, 7933-7943

Fundamental studies and perceptions on the spillover mechanism for hydrogen storage

G. M. Psofogiannakis and G. E. Froudakis, Chem. Commun., 2011, 47, 7933 DOI: 10.1039/C1CC11389E

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