Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8942846 | International Journal of Hydrogen Energy | 2018 | 8 Pages |
Abstract
We herein report on the synthesis of mixed alkali cluster intercalated fullerides NaxLiyâxC60 (y = 12; x = 1-6) by a two-steps mechanochemical reaction of fullerene with sodium and lithium. These compounds crystallize in the cubic lattice of C60 displaying a contracted lattice parameter with respect to the Na6C60 parent structure. The analysis of the hydrogen sorption behaviour shows a slight decrease in the dehydrogenation enthalpy for y = 12 with respect to the sodium free member. Raman spectroscopy highlighted a partial electron transfer from alkali metals to C60, suggesting the presence of charged sodium/lithium clusters. Finally, we applied muon spectroscopy to understand the different hydrogenation mechanisms in NaxLi6âxC60 and NaxLi12âxC60 and explain their different performance.
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Mattia Gaboardi, Nicola Sarzi Amadè, Mauro Riccò, Chiara Milanese, Alessandro Girella, Marta Gioventù, Felix Fernandez-Alonso,