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Spillover mechanism for hydrogen storage

Wednesday, 13 April 2016

HydrogenStorage

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.

http://pubs.rsc.org/en/content/articlelanding/2011/cc/c1cc11389e/unauth

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Σάββατο, 25 Νοεμβρίου 2017
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