Preparation of espilon-phase vanadium oxide from gamma-phase SVO starting material

摘要

The current invention relates to the preparation of an improved cathode active material for non-aqueous lithium electrochemical cell. In particular, the cathode active material comprises epsi-phase silver vanadium oxide prepared by using a gamma-phase silver vanadium oxide starting material. The reaction of gamma-phase SVO with a silver salt produces the novel epsi-phase SVO possessing a lower surface area than epsi-phase SVO produced from vanadium oxide (V2O5) and a similar silver salt as starting materials. Consequently, the low surface area epsi-phase SVO material provides an advantage in greater long term stability in pulse dischargeable cells.