NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER FOR RECHARGEABLE LITHIUM BATTERY, PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY

摘要

The present invention relates to an a negative electrode active material layer for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery comprising the same. The negative electrode active material layer comprises: a negative electrode active material comprising a silicon-based active material and a carbon-based active material; and a binder comprising amine salt of polyacrylic acid having a hydroxyl group. The present invention provides a negative electrode active material layer for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery comprising the same, comprising a silicon-based active material as a negative electrode active material and improving in cycle durability of a lithium secondary battery at the same time.