Electrochemically lithiated vanadium oxide, Li2V6O13

Single crystals of V6O13 were grown by chemical vapour transport and then electrochemically lithiated. The title compound, dilithium hexavanadium tridecaoxide, was the first phase formed during electrochemical lithiation at 2.65 V versus Li/Li+. The Li2V6O13 structure can be described as layers of VO6 octahedra stacked perpendicular to the c direction. Lithiation causes a 7.6% expansion along the c axis. The lithium ions occupy positions with fivefold square-pyramidal oxygen coordination between the layers.