Complex Hydrides with (BH_4)~ and (NH_2) Anions as New Lithium Fast-Ion Conductors

摘要

Complex hydrides with the (BH_4)~- anion are conventionally expressed as M(BH_4)_n (n: valence of metal M), which shows ionic bonding between the M~(n+) cation and the (BH_4)~- anion. These hydrides have been attracting great interest as potential candidates for advanced hydrogen storage materials because of their high hydrogen densities. Moreover, some of the authors have reported that one of the complex hydrides, Li(BH_4), exhibits another novel chemical property, that is, lithium fast-ion conduction (more than 1 × 10~(-3) S/cm over 390 K), which was observed during attempts to clarify the microwave absorbing mechanism.