Neutron spectroscopy on Sodium-Intercalated Fullerides
Na intercalated fullerides NaxC60 are nowadays intensively studied by theoreticians as systems for hydrogen storage applications. In particular decoration with alkali metals is expected to enhance the absorption capacity and reach the ideal binding energy via electrostatic interaction between molecular hydrogen and charged fullerenes. We recently managed to synthesize Na10C60 and Na8C60 and investigated the hydrogen absorption/desorption properties in Na10C60, finding a reversible 3.5 wt% H2 uptake through the formation of NaH and hydrogenated-C60 (fullerane). However, a clear understanding of hydrogen absorption mechanism as well as of the lattice dynamic modifications induced by the sodium intercalation, is still missing. Hence, we propose to investigate our samples before and after thermal treatment in hydrogen flux, by means of inelastic neutron scattering, in order to get more information about the dynamical properties of such systems. In this proposal, we require 6 days on the thermal-neutron Time-of-Flight IN4 spectrometer and 6 days on the hot-neutron two-axis Lagrange spectrometer at the ILL.
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CAVALLARI Chiara; ARAMINI Matteo; BRUNELLI Michela; Mattia Gaboardi; JIMENEZ RUIZ Monica; PONTIROLI Daniele; RICCO Mauro and ROLS Stephane. (2013). Neutron spectroscopy on Sodium-Intercalated Fullerides. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-04-125
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