Method for preparing positive electrode active material of rechargeable lithium cell

A technology for positive active materials and rechargeable lithium batteries, which can be used in battery electrodes, non-aqueous electrolyte batteries, positive electrodes, etc., and can solve the problems of low capacity, difficulty in manufacturing, and instability of manganese-based materials
CN1346158AInactive Publication Date: 2002-04-24SAMSUNG SDI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG SDI CO LTD
Publication Date
2002-04-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of preparing for a positive active material for a rechargeable lithium battery is provided. In this method, a lithiated compound to be coated and an organic solution or aqueous solution including a coating-element source are putted into a mixer, the mixture is continuously stirred to mix the contents thoroughly, and a hot dry gas is introduced into the mixer to evaporate the solvent while the powder is continuously agitated. The resulting dry coated powdery compound is heat-treated at an elevated temperature to obtain an oxide coating on the lithiated compound.
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Description

[0001] CROSS REFERENCE TO THIS APPLICATION

[0002] This application is based on Korean Patent Applications No. 2000-56247 and No. 2001-35727 filed with the Korean Industrial Property Office on September 25, 2000 and June 26, 2001, the contents of which are cited as References for this application. field of invention

[0003] The invention relates to a method for preparing positive electrode active materials for rechargeable lithium batteries, in particular to an economical, feasible and simple process for preparing positive electrode active materials for rechargeable lithium batteries. Background of the invention

[0004] Rechargeable lithium batteries use materials that can release or intercalate lithium ions as active materials for the positive and negative electrodes. Use organic solvents or polymers as electrolytes. Rechargeable lithium batteries generate electricity because of changes in the chemi...

Claims

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