Phys. Rev. Lett. 94, 155504 (2005) [4 pages]Hydrogen Storage in Novel Organometallic BuckyballsReceived 8 December 2004; published 22 April 2005 Transition metal (TM) atoms bound to fullerenes are proposed as adsorbents for high density, room temperature, ambient pressure storage of hydrogen. C60 or C48B12 disperses TMs by charge transfer interactions to produce stable organometallic buckyballs (OBBs). A particular scandium OBB can bind as many as 11 hydrogen atoms per TM, ten of which are in the form of dihydrogen that can be adsorbed and desorbed reversibly. In this case, the calculated binding energy is about 0.3 eV/H2, which is ideal for use on board vehicles. The theoretical maximum retrievable H2 storage density is ∼9 wt %. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.155504
DOI:
10.1103/PhysRevLett.94.155504
PACS:
61.48.+c
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