Sounds very exciting. MetalHydrides have been a "promising" material for hydrogen storage for decades now but haven't really proven to be a practical material.

Sounds very exciting. MetalHydrides have been a "promising" material for hydrogen storage for decades now but haven't really proven to be a practical material. This entirely new direction of research is very promising. From the original paper on arxiv ( http://arxiv.org/pdf/1409.7219v1.pdf http://arxiv.org/pdf/1409.7219v1.pdf ), sounds like that desorption (release) of hydrogen gas from the material requires extreme low pressures to be created. I'd be curious to learn the energy equation there... that is, how much energy needed to be consumed to recover the gaseous hydrogen back from the material (say, as percentage of energy stored in H2).