Other destabilisation multicomponent systems

The temperature of dehydrogenation for lithium hydride has also been shown to be reduced when ball milled with magnesium hydride (Yu et al., 2006). TGA-MS data showed that magnesium hydride decomposed first, but then LiH in the presence of Mg had an onset of dehydrogenation of c. 400 °C (cf.580°C for ball milled LiH), forming an alloy with the magnesium  

This is potentially a very versatile system as the a- and 3-Mg-Li alloys cover the full range of Mg-Li compositions. It should be noted that the reversible systems so far reported have been for magnesium-rich combinations only, but the T( bar) values for this system are expected to still be too high (TGA results indicate r(lbar) 400°C). 

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This chapter will first explain the theory of destabilisation and then move on to look at specific examples starting with the destabilisation of complex hydrides with separate sections devoted to different classes of destabilisation agents first metal hydrides, then non-hydride systems (where either an element or alloy which does not hydride or an inorganic salt is added as the destabilisation agent) and finally attempts to use another complex hydride to form a destabilised multicomponent system. The penultimate section summarises the work reported on other multicomponent hydrogen storage systems, predominantly the destabilisation of binary hydrides by other elements, and the chapter is concluded with an outlook of potential future research. 

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