Behavior of Rapidly Quenched  V ₂ O ₅ Glass at Cathode in Lithium Cells

A vanadium oxide glass has been prepared by a rapid quenching technique, and the electrochemical lithium insertion into the glass has been investigated. The open‐circuit voltage (OCV) of the lithium cell with the glass gradually is decreased with increasing the stoichiometric parameter , while OCV of crystalline has three voltage plateaus. This difference suggests that a homogeneous single phase exists in the glass all over the insertion range. The chemical diffusion coefficients in the glass are higher by 1–2 orders of magnitude than those of the polycrystalline.