Negative electrode for lithium ion secondary battery and lithium ion secondary battery prepared by using the same

1 . A negative electrode for a lithium ion secondary battery, comprising a negative electrode active material layer,

wherein said negative electrode active material layer comprises a negative electrode active material capable of reversibly absorbing and desorbing lithium, and a binder,

said binder comprises at least one polymer selected from the group consisting of polyacrylic acid and polymethacrylic acid, and

said polymer comprises an acid anhydride group.

2 . The negative electrode for a lithium ion secondary battery in accordance with claim 1 , wherein said negative electrode active material comprises at least one element selected from the group consisting of Si and Sn.

3 . The negative electrode for a lithium ion secondary battery in accordance with claim 2 , wherein said negative electrode active material comprises at least one selected from the group consisting of simple substance Si and simple substance Sn.

4 . The negative electrode for a lithium ion secondary battery in accordance with claim 2 , wherein said negative electrode active material comprises at least one selected from the group consisting of SiO x where 0<x<2 and SnO y where 0<y<2.

5 . The negative electrode for a lithium ion secondary battery in accordance with claim 2 , wherein said negative electrode active material comprises an alloy material comprising Si and at least one element selected from the group consisting of Ti, Fe, Co, Ni and Cu.

6 . The negative electrode for a lithium ion secondary battery in accordance with claim 5 , wherein said alloy material comprises a TiSi 2 phase and a Si phase.

7 . A lithium ion secondary battery comprising the negative electrode of claim 1 , a positive electrode, a separator, and a non-aqueous electrolyte.