| abstract |
Lithium using a negative electrode active material, such as a negative electrode active material containing silicon and / or a silicon alloy, which causes cracks in negative electrode active material particles with expansion and contraction of volume during insertion and extraction of lithium. The charge / discharge cycle characteristics of the secondary battery are drastically improved. A negative electrode in which a negative electrode active material-containing layer containing negative electrode active material particles containing silicon and / or a silicon alloy and a binder is formed on the surface of a negative electrode current collector, a positive electrode 1, a nonaqueous electrolyte, In the lithium secondary battery comprising: 1,3,2-Dioxathiolane 2,2-dioxide represented by the following chemical formula 4 is contained in the non-aqueous electrolyte. [Formula 4] [Selection] Figure 1 |