Influence of Nanoconfinement on the Hydrogen Release Processes from Sodium Alanate

Sodium alanate (NaAlH4) is a prospective H2 storage material for stationary and mobile applications, as NaAlH4 contains 7.4 wt% of H2, it possible to do multiple release accumulation cycles. Nanoconfinement potential solution enhance the properties NaAlH4. To optimize supporting synthesis method used nanoconfinement NaAlH4, better understanding influence on processes necessary. Thus, from bulk, purely nanoconfined, intermediate measured at different temperature ramp rates, characteristic parameters each hydrogen process are determined. Activation energies determined using Kissinger method, effect activation analysed. The impact limitations in case bulk nanoconfined presented discussed. decreases initial reversible steps between 30 45 kJ mol−1 increased energy last irreversible step over 210 mol−1.