Editing Lithium aluminium hydride (section)

=== Hydrogen storage ===
[[File:volvsgrav.png|300px|thumb|Volumetric and gravimetric hydrogen storage densities of different hydrogen storage
methods. Metal hydrides are represented with squares and complex hydrides with triangles (including LiAlH<sub>4</sub>).
Reported values for hydrides are excluding tank weight. [[United States Department of Energy|DOE]] [[FreedomCAR]] targets are including tank weight.]]
LiAlH<sub>4</sub> contains 10.6 wt% hydrogen, thereby making LAH a potential [[hydrogen storage]] medium for future [[fuel cell]]-powered [[vehicle]]s. The high hydrogen content, as well as the discovery of reversible hydrogen storage in Ti-doped NaAlH<sub>4</sub>,<ref>{{cite journal | last1 = Bogdanovic | first1 = B. | last2 = Schwickardi | first2 = M. | title = Ti-Doped Alkali Metal Aluminium Hydrides as Potential Novel Reversible Hydrogen Storage Materials | journal = Journal of Alloys and Compounds | year = 1997 | volume = 253–254 | pages = 1–9 | doi = 10.1016/S0925-8388(96)03049-6 }}</ref> have sparked renewed research into LiAlH<sub>4</sub> during the last decade. A substantial research effort has been devoted to accelerating the decomposition kinetics by catalytic doping and by [[ball mill]]ing.<ref name="varin">{{cite book | last1 = Varin | first1 = R. A. |author-link1=Robert A. Varin| last2 = Czujko | first2 = T. | last3 = Wronski | first3 = Z. S. | title = Nanomaterials for Solid State Hydrogen Storage | edition = 5th | year = 2009 | pages = 338 | publisher = Springer | isbn = 978-0-387-77711-5 }}</ref>
In order to take advantage of the total hydrogen capacity, the intermediate compound [[LiH]] must be dehydrogenated as well. Due to its high thermodynamic stability this requires temperatures in excess of 400&nbsp;°C, which is not considered feasible for transportation purposes. Accepting LiH + Al as the final product, the hydrogen storage capacity is reduced to 7.96 wt%. Another problem related to hydrogen storage is the recycling back to LiAlH<sub>4</sub> which, owing to its relatively low stability, requires an extremely high hydrogen pressure in excess of 10000 bar.<ref name="varin" /> Cycling only reaction R2 — that is, using Li<sub>3</sub>AlH<sub>6</sub> as starting material — would store 5.6 wt% hydrogen in a single step (vs. two steps for NaAlH<sub>4</sub> which stores about the same amount of hydrogen). However, attempts at this process have not been successful so far.{{citation needed|date=March 2016}}