Intercalation of Heavy Alkali Metals in Boron Substituted Carbons BxC1−x

Abstract

First stage intercalation compounds were obtained using vapor reaction of heavy alkali metals (M ˭ K, Rb and Cs) with BXC1−x platelets (x=0.1 and x=0.25). Depending on the value of x, M(B0.1C0.9)8±1 and M(B0.25C0.75)10±1 compounds were formed. Intensity calculations of the 001 lines suggested domains of M(BXC1−x)5 first stage dense structure. As formed B0.25C0.75 was incompletely intercalated by cesium from its liquid ammonia solution whereas extended intercalation was obtained with heat treated B0.25C0.75 host (T=1600°C) giving a first stage Cs(B0.25C0.75)12 derivative.