Phys. Rev. Lett. 100, 105505 (2008) [4 pages]High Capacity Hydrogen Absorption in Transition Metal-Ethylene Complexes Observed via NanogravimetryReceived 30 October 2007; published 14 March 2008 Using a surface acoustic wave based high resolution gravimetric technique where samples close to a monolayer are measured we observe high weight percentage hydrogen (H2) uptake with rapid kinetics at room temperature in transition metal (TM) ethylene (C2H4) complexes formed by laser ablation. By ablating titanium (Ti) in C2H4 we obtain a complex that exhibits 12 wt % uptake of H2 with substitution by deuterium providing a doubling. Mass spectroscopic studies during ablation of Ti show presence of a species, with a mass=78 amu, a likely candidate for the high H2 uptake. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.105505
DOI:
10.1103/PhysRevLett.100.105505
PACS:
61.66.Hq, 82.30.Rs
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