Rechargeable lithium battery
AssigneeSanyo Electric Co., Ltd.
InventorsHiroaki Ikeda, Masahisa Fujimoto, Shin Fujitani
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Abstract
A rechargeable lithium battery has a positive electrode, a negative electrode and a non-aqueous electrolyte. The active material of the positive or negative electrode is tungsten complex sulfide, either with or without addition of lithium thereto. The tungsten complex sulfide contains tungsten, sulfur and at least one transition metal selected from Cu, V, Cr, Mn, Fe, Co and Ni, and has substantially the same crystal structure as WS2.
Claims13
A rechargeable lithium battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte,
- wherein at least one of said electrodes comprises a first active material comprising a tungsten complex sulfide, wherein said tungsten complex sulfide is represented by the formula MxW1-xS2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS2 in X-ray diffractometry.
An electrode material for use in rechargeable lithium batteries, comprising a tungsten complex sulfide represented by the formula MxW1-xS2 where M is at least one element selected from Cu, V, Cr, Mn, Fe, Co and Ni, and x satisfies the relationship 0<x<0.48, and wherein said tungsten complex sulfide has substantially the same crystal structure as WS2 in X-ray diffractometry.
Dependencies are inferred from the claim text.