NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

A negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector and including a copolymer binder, a Si-C composite negative active material, and a crystalline carbon negative active material, wherein the copolymer bi...

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Bibliographische Detailangaben
Hauptverfasser:	IN, Jinhyuk, DO, Uisong, LEE, DongHun, CHAE, Wonhyung, LEE, Junkyu, JUNG, Kyunghwa, JEONG, Min-young, EOM, Hyeri
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector and including a copolymer binder, a Si-C composite negative active material, and a crystalline carbon negative active material, wherein the copolymer binder includes a (meth)acrylic acid-based repeating unit and a (meth)acrylonitrile-based repeating unit, and a DD (Degree of Divergence) value defined by Equation 1 is about 30 or more.DD⁡(Degree⁢of⁢Divergence)=(Ia/Itotal)*100Equation⁢1wherein,Ia is a sum of peak intensities at 2θ=42.4±0.2°, 43.4±0.2°, 44.6±0.2°, 77.5±0.2° measured by XRD utilizing a Cu Kα ray, andItotal is a sum of peak intensities at 2θ=26.5±0.2°, 42.4±0.2°, 43.4±0.2°, 44.6±0.2°, 54.7±0.2°, 77.5±0.2° measured by XRD utilizing a Cu Kα ray.