Vanadium oxysulfide based cathode materials for rechargeable battery
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsFuminori MIZUNO, Timothy S. ARTHUR
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Abstract
A cathode active composite containing an amorphous composite of vanadium oxide and an inorganic sulfide is provided. In one embodiment the composite contains vanadium pentoxide and phosphorous pentasulfide. In a further special embodiment, a cathode active material comprising a nanoparticle composite of an amorphous matrix containing vanadium, oxygen and sulfur and crystalline regions of vanadium and oxygen embedded in the matrix is provided. Electrochemical cells and a reversible battery having a cathode containing one of the cathode active composites are also provided. In specific embodiments the battery is a magnesium battery.
Claims32
A cathode active material, comprising:
- a composite of vanadium oxide and an inorganic sulfide compound;
- wherein the structure of the composite is substantially amorphous and an XRD analysis does not show a crystalline peak.
A cathode active material, comprising:
- nanoparticles of a mechanically milled composite of a vanadium oxide source and an inorganic sulfide source,
- wherein the composite comprises regions of crystalline morphology embedded in an amorphous matrix.
Dependencies are inferred from the claim text.