NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY USING SAME

摘要

Disclosed is a negative electrode for a lithium ion secondary battery, which comprises a negative electrode active material layer formed on a collector, and which is characterized in that: the negative electrode active material layer contains a binder resin and a negative electrode active material that contains a metal capable of forming an alloy with lithium; and the binder resin contains a polyamideimide resin that has an adhesion to a copper foil of not less than 10 g/mm and an adhesion to a silicon wafer of not less than 10 g/mm. The negative electrode for a lithium ion secondary battery is capable of suppressing mechanical damage to an electrode material caused by volumetric expansion/shrinkage accompanying charging/discharging, and provides a lithium ion secondary battery which has high capacity, improved initial charge/discharge efficiency and improved cycle characteristics.