Reversible hydrogen storage in the lithium borohydride-calcium hydride coupled system
作者： F.E. Pinkerton , M.S. Meyer
DOI: 10.1016/J.JALLCOM.2007.09.125
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摘要: Abstract We report large reversible hydrogen storage in a new coupled system, LiBH 4 /CaH 2 , via the reaction 6LiBH + CaH ↔ 6LiH + CaB 6 + 10H having theoretical capacity of 11.7 wt% and an estimated enthalpy Δ H = 59 kJ/mol . Samples that include 0.25 mol (18.2 wt%) TiCl 3 reproducibly store 9.1 wt% hydrogen, corresponding to 95% available hydrogen. is only evolved gas detected by mass spectrometry. X-ray diffraction confirms sample cycles between CaH hydrogenated state LiH CaB dehydrogenated state.
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