Rechargeable lithium battery having an improved cathode and proc

Details Rechargeable lithium battery having an improved cathode and proc Rechargeable lithium battery having an improved cathode and proc

1996-09-04

2000-12-26

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

4292311, 4292315, 42923195, H01M 436, H01M 448, H01M 458

Patent

active

061656429

ABSTRACT:
A rechargeable lithium battery comprising at least a cathode, a separator, an anode, and an electrolyte or electrolyte solution integrated in a battery housing, is characterized by a cathode constituted of a specific powdery cathode active material having a large specific surface area and a primary particle size of 0.5 .mu.m or less. The cathode active material is obtained by mixing a salt of a transition metal in and dissolving the salt in an aqueous solution containing at least a water-soluble polymer material to obtain a product, and baking the product to form the powdery cathode active material for use as the cathode active material of the cathode. Alternatively, the cathode active material is obtained by mixing a salt of a transition metal in a monomer capable of forming at least a water-soluble polymer material, polymerizing the monomer to obtain a polymerized product, and baking the polymerized product to form the powdery cathode active material for use as the cathode active material of the cathode. A process for the production of the rechargeable lithium battery is also provided.

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