▎ 摘　　要

NaAlH4 is one of the most promising hydrogen storage materials due to its high energy density. However, the sluggish kinetic hindered it stepping into practical application. In this work, a bottom-up strategy was employed to confine NaAlH4 between graphene nanosheets with a millefeuille-liked multi-layer morphology. The NaAlH4 particles were uniformly arranged between graphene layers, with a high loading up to 90%, and performed improved dehydrogenation kinetic. The dehydrogenation peak temperature 55.7 degrees C decreased comparing with commercial NaAlH4. The generality of this nano-structuring strategy were confirmed by the successful synthesis of TiO2-NaAlH4 co-confined composites as well as the further enhanced kinetic. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.