Aluminum hydride for solid-state hydrogen storage: Structure, synthesis, thermodynamics, kinetics, and regeneration

Abstract

Aluminum hydride (AlH 3 ) is a binary metal hydride that contains more than 10.1 wt% of hydrogen and possesses a high volumetric hydrogen density of 148 kg H 2 m −3 . Pristine AlH 3 can readily release hydrogen at a moderate temperature below 200 °C. Such high hydrogen density and low desorption temperature make AlH 3 one of most promising hydrogen storage media for mobile application. This review covers the research activity on the structures, synthesis, decomposition thermodynamics and kinetics, regeneration and application validation of AlH 3 over the past decades. Finally, the future research directions of AlH 3 as a hydrogen storage material will be revealed. AlH 3 is a binary metal hydride that contains a hydrogen capacity of 10 wt% and can release hydrogen at T < 100 °C. This review covers the structure, synthesis, decomposition, and regeneration of AlH 3