Nanoconfined 2 LiBH4 - MgH2 is prepared with and without catalyst (TiCl3) by direct melt infiltration of bulk 2 LiBH4 - MgH2 into an inert carbon aerogel scaffold material. Homogeneous dispersion of MgH2, LiBH4 and TiCl3 in the nanoporous structure of carbon scaffold is assured by several means, such as SEM-EDS via focus ion beam technique, in situ synchrotron radiation powder X-Ray diffraction, and N2 adsorption-desorption. The nanoconfined 2LiBH4-MgH2 system with and without catalyst release 100% hydrogen storage capacity within 100 and 200 min respectively, while the time for the bulk material is 30 h. A reversible 10.8 wt % H2 with respect to the metal hydride content over 4 hydrogen release and uptake cycles is preserved from both the nanoconfined systems.
Nanoconfined 2LiBH4 - MgH2 in nanoporous carbon aerogel scaffolds for reversible hydrogen storage
MILANESE, CHIARA;
2012-01-01
Abstract
Nanoconfined 2 LiBH4 - MgH2 is prepared with and without catalyst (TiCl3) by direct melt infiltration of bulk 2 LiBH4 - MgH2 into an inert carbon aerogel scaffold material. Homogeneous dispersion of MgH2, LiBH4 and TiCl3 in the nanoporous structure of carbon scaffold is assured by several means, such as SEM-EDS via focus ion beam technique, in situ synchrotron radiation powder X-Ray diffraction, and N2 adsorption-desorption. The nanoconfined 2LiBH4-MgH2 system with and without catalyst release 100% hydrogen storage capacity within 100 and 200 min respectively, while the time for the bulk material is 30 h. A reversible 10.8 wt % H2 with respect to the metal hydride content over 4 hydrogen release and uptake cycles is preserved from both the nanoconfined systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.