Active species of CeAl4 in the CeCl3-doped sodium aluminium hydride and its enhancement on reversible hydrogen storage performance

Abstract

By directly doping CeAl₄ into sodium aluminium hydride, which probably serves as the active species in the hydriding and dehydriding processes of CeCl₃-doped NaAlH₄, a high reversible hydrogen capacity of 4.77–4.92 wt% (close to expected capacity of 5.13 wt%) can be achieved in less than 20 min under moderate conditions.