Phase stability and hydrogen desorption in a quinary equimolar mixture of light-metals borohydrides

Add time:08/12/2019    Source:sciencedirect.com

The present study aims at investigating, for the first time, a quinary mixture of light-metals borohydrides. The goal is to design combinations of borohydrides with multiple cations in equimolar ratio, following the concept of high entropy alloys. The equimolar composition of the LiBH4NaBH4KBH4Mg(BH4)2Ca(BH4)2 system was synthetized by ball milling. The obtained phases were analysed by X-ray diffraction and in-situ Synchrotron Radiation Powder X-ray Diffraction, in order to establish the amount of cations incorporated in the obtained crystalline phases and to study the thermal behaviour of the mixture. HP-DSC and DTA were also used to define the phase transformations and thermal decomposition reactions, leading to the release of hydrogen, that was detected by MS. The existence of a quinary liquid borohydride phase is reported for the first time. Effects of the presence of multi-cations compounds or a liquid phase on the hydrogen desorption reactions are described.

We also recommend Trading Suppliers and Manufacturers of Aluminum borohydride (cas 16962-07-5). Pls Click Website Link as below: cas 16962-07-5 suppliers

Prev:Suppressing diborane production during the hydrogen release of metal borohydrides: The example of alloyed Al(BH4)3
Next:Sodium borohydride and propylene glycol, an effective combination for the generation of 2.3 wt% of hydrogen)