ELECTRODE MATERIAL INCLUDING HIGH DEGREE OF POLYMERIZATION OF POLYACRYLONITRILE BINDER, METHOD OF THE ELECTRODE MATERIAL AND RECHARGEABLE LITHIUM BATTERY COMPRISING ELECTRODE MATERIAL

摘要

A negative electrode material for a lithium secondary battery is provided to prevent exfoliation or separation of an active material layer from a current collector in charging/discharging, and to suppress the degradation of the capacity retention rate accompanied with the rechargeable cycle. An electrode material containing polyacrylonitrile binder having the high degree of polymerization is a negative electrode material containing an active material and binder. The binder comprises polyacrylonitrile having the high degree of polymerization with the polymerization of 1000~100000. The comprises polyacrylonitrile having the high degree of polymerization is included in the amount of 1~30 weight% based on the total electrode materials.