Microstructural Study of MgB₂ in the LiBH₄-MgH₂ Composite by Using TEM.

ABSTRACT: The hampered kinetics of reactive hydride composites (RHCs) in hydrogen storage and release, which limits their use for extensive applications in hydrogen storage S1and energy conversion, can be improved using additives. However, the mechanism of the kinetic restriction and the additive effect on promoting the kinetics have remained unclear. These uncertainties are addressed by utilizing versatile transmission electron microscopy (TEM) on the LiBH₄-MgH₂ composite under the influence of the 3TiCl₃·AlCl₃ additives. The formation of the MgB₂ phase, as the rate-limiting step, is emphatically studied. According to the observations, the heterogeneous nucleation of MgB₂ relies on different nucleation centers (Mg or TiB₂

SUBMITTER: Jin O 

PROVIDER: S-EPMC9182164 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature