Patent ID: 6835332
Filing Date: 2004-12-28
Classification: C22B,H01M,Y02E,Y02P,Y10T

Abstract:
A process for producing an electrode material for a rechargeable lithium battery in which an oxidation-reduction reaction is used, said process comprising the steps of:(1) mixing at least one kind of a metal compound (a) selected from the group consisting of metal salts and metal complexes of a metal (aâ€²) capable of being electrochemically alloyed with lithium, at least one kind of transition metal compound (b) selected from the group consisting of transition metal salts and transition metal complexes of a transition metal (bâ€²), and a complexing agent (c) with solvent (d) to obtain a mixed solution, (2) mixing a reducing agent (e) with said solution to obtain a mixture with a pH of less than 2, and (3) oxidizing said reducing agent contained in said mixture obtained in said step (2) to reduce an ion of said metal (aâ€²) and an ion of said transition metal (bâ€²) contained in said mixture by adding an alkali to said mixture obtained in said step (2) so that the pH value of said mixture is changed from less than 2 to a value in a range of from 3 to 12, thereby to obtain an amorphous alloy material capable of being electrochemically alloyed with lithium as said electrode material.