Lerner, David, Littenberg, Krumholz & Mentlik, LLP
Electrode material containing mixture of polyvinyl alcohol of high degree of polymerization and polyvinyl pyrrolidone as binder and lithium secondary battery employed with the same
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.
LG Chem, Ltd.
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Young-Min Minjung Min Ho Juhyun Eun-Suok SeungRim Ki Woo
Kim Ryu Cho Kim Oh Yang Chun