Synthesis of lithium transition metal sulphides
AssigneeQinetiq Limited
InventorsAndrew G. Ritchie, Peter G. Bowles
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Abstract
A process for the production of a lithium transition metal sulphide such as lithium iron sulphide, the process comprising reacting a transition metal sulphide with lithium sulphide in a solvent comprising a molten salt or a mixture of molten salts. Lithium transition metal sulphides obtained using this process are also claimed and are useful in the production of electrodes, in particular for rechargeable lithium batteries.
Claims14
A process for producing a lithium transition metal sulphide, the process comprising reacting a transition metal sulphide with lithium sulphide in a solvent comprising a molten salt or a mixture of molten salts.
A process according to any preceding claim, wherein the molten salt or mixture of molten salts comprises an alkali metal halide, a mixture of alkali metal halides, an alkaline earth metal halide, a mixture of alkaline earth metal halides, or any mixture thereof.
A process according to any one of the preceding claims further comprising the step of recovery of the product by dissolution of the molten salt or mixture of molten salts in at least one organic liquid.
The use of a molten salt or a mixture of molten salts as a solvent in a chemical reaction for the production of a sulphide.
A process substantially as herein described with reference to the accompanying drawings.
Dependencies are inferred from the claim text.