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Dehydrogenation Tuning of Ammine Borohydrides Using Double-Metal Cations

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journal contribution
posted on 06.04.2011, 00:00 by Yanhui Guo, Hui Wu, Wei Zhou, Xuebin Yu
The strategy of using double-cations to tune the temperature and purity of dehydrogenation of ammine borohydrides is reported. The first double-cation ammine borohydride, Li2Al(BH4)5·6NH3, which forms a novel structure with ordered arrangement of Al(NH3)63+ ammine complexes and Li2(BH4)53− complex anions, is found to release over 10.0 wt % hydrogen below 120 °C with favorable kinetics and high H-purity (>99%).