Destabilization of LiBH4 by nanoconfinement in poly (methyl methacrylate)-co-butyl meth-acrylate (PMMA-co-BM), denoted as nano LiBH4-PMMA-co-BM, is proposed for reversible hydrogen storage. The onset dehydrogenation temperature of nano LiBH4-PMMA-co-BM is reduced to 80C (DeltaT=340 and170 °C as compared with milled LiBH4 and nanoconfined LiBH4 in carbon aerogel,respectively).At120°C under vacuum,nanoLiBH4-PMMA-co-BM releases 8.8 wt.% H2 with respect to LiBH4 content within 4 h during the 1st dehydrogenation, while milled LiBH4 performs no dehydrogenation at the same temperature and pressure condition. Moreover,nanoLiBH4-PMMA-coBM can be rehydrogenated at the mildest condition(140°C under50 barH2 for12h) among other modifiedLiBH4 reportedinthepreviousliterature.
Destabilization of LiBH4 by Nanoconfinement in PMMA–co–BM Polymer Matrix for Reversible Hydrogen Storage
MILANESE, CHIARA;MARINI, AMEDEO;
2014-01-01
Abstract
Destabilization of LiBH4 by nanoconfinement in poly (methyl methacrylate)-co-butyl meth-acrylate (PMMA-co-BM), denoted as nano LiBH4-PMMA-co-BM, is proposed for reversible hydrogen storage. The onset dehydrogenation temperature of nano LiBH4-PMMA-co-BM is reduced to 80C (DeltaT=340 and170 °C as compared with milled LiBH4 and nanoconfined LiBH4 in carbon aerogel,respectively).At120°C under vacuum,nanoLiBH4-PMMA-co-BM releases 8.8 wt.% H2 with respect to LiBH4 content within 4 h during the 1st dehydrogenation, while milled LiBH4 performs no dehydrogenation at the same temperature and pressure condition. Moreover,nanoLiBH4-PMMA-coBM can be rehydrogenated at the mildest condition(140°C under50 barH2 for12h) among other modifiedLiBH4 reportedinthepreviousliterature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
