The hydrogen economy critically depends on the ability to store hydrogen safely with high gravimetric and volumetric capacities. Three approaches are being seriously considered by DOE at present: 1)chemical hydrides,2)complex metal hydrides,and 3)microporous materials.Each approach faces fundamental issues that will require scientific breakthroughs to incorporate them into practical systems.In our group,we are studying two different systems(#2 and 3)and addressing the following fundamental questions:1)how can hydrogen dissociate on aluminum and what is the nature of mass transport in complex alanates to form complex metal hydrides?and 2)What is the nature of interactions for H2 molecules in microporous metal organic framework(MOF)materials?
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