Electrode material containing mixture of polyvinyl alcohol...

Details Electrode material containing mixture of polyvinyl alcohol... Electrode material containing mixture of polyvinyl alcohol...

2007-08-24

2010-12-07

Alejandro, Raymond (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S212000, C429S209000

Reexamination Certificate

active

07846583

ABSTRACT:
An electrode mix comprising a mixture of a polyvinyl alcohol with polyvinyl pyrrolidone as a binder and a lithium secondary battery comprising the same are disclosed. The electrode mix and lithium secondary battery according to the present invention enable stable maintenance of adhesion between active materials and/or adhesion between the active material and current collector and reduction of volumetric changes of anode active materials during repeated charge/discharge cycles, through the use of a polymer having an improved elongation percentage while exhibiting very high adhesive strength, as a binder of an electrode mix. Therefore, the present invention enables production of a large-capacity lithium secondary battery particularly using a silicon- or tin-based anode active material.

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International Search Report, PCT/KR2007/004052.

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