Hydride Intercalation of Lithium into the Spinel MgMnO3 – δ
Lithium-rich superstoichiometric solid solutions MgLixMnO3 – δ were obtained by intercalation into the spinel MgMnO3 – δ using lithium hydride LiH as an intercalating agent through the stage of the formation of mechanocomposites. The accompanying chemical transformations involving the hydride ion were studied. Conventional ceramic synthesis methods and alternative intercalating agents were analyzed. It was shown that hydride intercalation produces pure samples of single-phase spinels with high lithium content (MgLi0.75MnO3), which is three times higher than that reachable by conventional ceramic synthesis methods.
Keywords:solid solutions mechanocomposites solid-phase synthesis lithium hydride
We thank Dr. N.N. Mal’tseva for her kind participation in developing the methodology of the synthesis using mechanocomposites in the studied systems.
This work was supported by the Russian Science Foundation (project no. 17-73-10489).