Lithium secondary battery, and process for producing the same

Details Lithium secondary battery, and process for producing the same Lithium secondary battery, and process for producing the same

2002-12-31

2008-08-26

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231950, C429S231600, C429S231800

Reexamination Certificate

active

07416814

ABSTRACT:
A lithium secondary battery, which comprises a positive electrode, a negative electrode containing a lithium ion-storable/dischargeable negative electrode-active material and a lithium ion conductive, non-aqueous electrolytic solution or polymer electrolyte can have distinguished charging/discharging characteristics and a higher safety, when the negative electrode material contains particles comprising carbonaceous materials and at least one of elements capable of forming a compound with Li; the elements have a melting point of at least 900° C. and a thermal expansion coefficient of not more than 9 ppm/K at room temperature; the particles are embedded in a plurality of layers of the carbonaceous materials; the particles being subjected to a mechanical treatment to make particle sizes of the particles smaller than the initial particle size in advance.

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