Magnesium borohydride: A new hydrogen storage material

Magnesium Borohydride: From Hydrogen Storage to Magnesium Battery**

Beyond hydrogen storage: The first example of reversible magnesium deposition/stripping onto/from an inorganic salt was seen for a magnesium borohydride electrolyte. High coulombic efficiency of up to 94 % was achieved in dimethoxyethane solvent. This Mg(BH(4))(2) electrolyte was utilized in a rechargeable magnesium battery.

Nanoscale Magnesium as a Hydrogen Storage Material

Electronic structure of aqueous borohydride: a potential hydrogen storage medium.

Borohydride salts have been considered as good prospects for transportable hydrogen storage materials, with molecular hydrogen released via hydrolysis. We examine details of the hydration of sodium borohydride by the combination of X-ray absorption spectroscopy and first principles' theory. Compared to solid sodium borohydride, the aqueous sample exhibits an uncharacteristically narrow absorpti...

Dehydrogenation Thermodynamics of Hydrogen Storage Material Manganese Borohydride: First-Principles Study

Ab initio calculations using DFT were performed to establish a stable crystal structure of Mn(BH4)2. The crystal structure of Mn(BH4)2 is found to be orthorhombic with space group Fddd (No. 70). The electronic density of states shows that manganese borohydride is of metallic nature without a band gap. Our calculations showed that the interaction between Mn atoms and BH4 complexes has an ionic c...

Reversibility and Improved Hydrogen Release of Magnesium Borohydride

Desorption and subsequent rehydrogenation of Mg(BH4)2 with and without 5 mol % TiF3 and ScCl3 have been investigated. Temperature programmed desorption (TPD) experiments revealed a significant increase in the rate of desorption as well as the weight percentage of hydrogen released with additives upon heating to 300 °C. Stable Mg(BxHy)n intermediates were formed at 300 °C, whereas MgB2 was the m...