Isolated B10Se20-macrotetrahedra in the novel quaternary selenoborate Li6-2xSr2+xB10Se20 (x approximate to 0.7)

摘要

Practical applications of lithium containing solids in batteries, fuel cells and related devices have drawn interest on the mechanisms of cationic conductivity and the relations to structural features. Lithium thioborates have shown ionic conductivity in the glassy state.(1) A wide variety of chalcogenoborates, (2-6) especially those containing smaller cation species, are candidates for closer investigations in the context of solid state ionics. Furthermore, electron densities (i.e., diffusion pathways) can be extracted from the SXRD experiments and dynamical properties of ionic motion are visible on the much shorter NMR timescale.