Improved kinetic behaviour of Mg(NH₂)₂-2LiH doped with nanostructured K-modified-Li_xTi_yO_z for hydrogen storage.

ABSTRACT: The system Mg(NH₂)₂ + 2LiH is considered as an interesting solid-state hydrogen storage material owing to its low thermodynamic stability of ca. 40 kJ/mol H₂ and high gravimetric hydrogen capacity of 5.6 wt.%. However, high kinetic barriers lead to slow absorption/desorption rates even at relatively high temperatures (>180 °C). In this work, we investigate the effects of the addition of K-modified Li_xTi_yO_z on the absorption/desorption behaviour of the Mg(NH₂)₂ + 2LiH system. In comparison with the pristine Mg(NH₂)₂ + 2LiH, the system containing a tiny amount of nanostructured K-modified Li_xTi_yO_z shows enhanced absorption/desorption behaviour. The do

SUBMITTER: Gizer G 

PROVIDER: S-EPMC6946654 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature