PREPARATION OF .EPSILON.-PHASE SILVER 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 .epsilon.-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 .epsilon.-phase SVO possessing a lower surface area than .epsilon.-phase SVO produced from vanadium oxide (V2O5) and a similar silver salt as starting materials. Consequently, the low surface area .epsilon.-phase SVO material provides an advantage in greater long term stability in pulse dischargeable cells.