Behavior of scaled-up sodium alanate hydrogen storage tanks during sorption

Sodium alanate is being experimentally tested in scaled-up quantities. For this purpose, several tanks have been designed and constructed. The tank functionality during absorption and desorption of hydrogen was demonstrated in a scale of 8 kg of alanate, with a peak technical absorption time below 10 min. The absorption and desorption data show good reproducibility. Neutron radiography was used in another tank to show the powder’s physical behavior during sorption, showing conservation of the macroscopic structure during cycling.

► An 8 kg doped sodium alanate tank was successfully tested.
► The goal of 80% capacity loaded in under 10 min was reached.
► Sorption results with the 8 kg alanate tank were highly reproducible.
► Neutron radiography is a valuable tool in the study of complex hydride based H2 tanks.