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Hydrogen density in nanostructured carbon, metals and complex materials

Züttel, Andreas ; Wenger, Pascal ; Sudan, Patrick ; Mauron, Philippe ; Orimo, Shin-ichi

In: Materials Science and Engineering B, 2004, vol. 108, p. 9-18

The challenge in the research on hydrogen storage materials is to pack hydrogen atoms or molecules as close as possible. Hydrogen absorbed in metals can reach a density of more than 150 kg m⁻³ (e.g. Mg₂FeH₆ or Al(BH₄)₃) at atmospheric pressure. For metallic hydrides, however, due to the large atomic mass of the transition metals the gravimetric hydrogen density is limited to less than...