Abstract

The hydrolysis reaction of LiBH 4 with a stoichiometric amount of water had 5 times the H 2 yield in comparison with that of using water exceeding the stoichiometric amount. The gravimetric and the volumetric hydrogen densities increased with increasing water added (H 2O/LiBH 4) followed by a decrease. Those densities had maximum values at H 2O/LiBH 4=1.3: gravimetric hydrogen density per unit weight of LiBH 4 and H 2O is 7.4 wt %, volumetric hydrogen density per unit weight of NaBH 4 and H 2O is 60 kgH 2/ m 3 . It can be used for a fuel cell uninterrupted power supply.

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