Preparation of .epsilon.-phase silver vanadium oxide from...

Details Preparation of .epsilon.-phase silver vanadium oxide from... Preparation of .epsilon.-phase silver vanadium oxide from...

C - Chemistry, Metallurgy

01

G

C01G 31/02 (2006.01) C01G 5/00 (2006.01) C01G 31/00 (2006.01) H01M 4/04 (2006.01) H01M 4/48 (2006.01)

Patent

CA 2364825

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.

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