USE OF VANADIUM OXIDE IRON AND/OR ALUMINUM BRONZES AS A CATHODE MATERIAL IN ELECTROCHEMICAL GENERATORS

摘要

The use of vanadium oxide iron and / or aluminum bronzes as a cathode materia l in electrochemical generators is de-scribed. The cathode material is a vanadium oxide bronze having formula: M1x1M2x2V2O5, where M1 is trivalent aluminum or iron, M2 is a metal different from M1 having valency n and chosen from alkali metals, alkaline earth metals, transition metals and aluminum, and x1 and x2 are such that 0.06 .ltoreq. x1 .ltoreq. 0.13; 0 .ltoreq. x2 .ltoreq. 0.20; and 0.27 .ltoreq. 3 x1 .ltoreq. nx2 .ltoreq. 0.39; and may be combined as a cathode (9) with an Li or Li alloy anode (5) and with an electrolyte consisting of lithium perchlorate in propylene carbonate. The invention relates to the use of vanadium oxide bronzes with iron and / or aluminum as cathode material in electrochemical generators. This cathode material is a vanadium oxide bronze of formula: M1x1M2x2V2O5 in which M1 represents iron or trivalent aluminum, M2 represents a metal different from M1 of valence n chosen by m1 alkali metals, alkaline earth metals, transition metals and aluminum, and x1 and x2 are such as 0.06 .ltoreq. x1 .ltoreq. 0.13; 0 .ltoreq. x2 .ltoreq. 0.20; and 0.27 .ltoreq. 3x1 + nx2 .ltoreq. 0.39. It can be associated as cathode (9) with an anode (5) made of Li or alloy of Li and with an electrolyte constituted by lithium perchlorate in carbonate e of propylene.