| abstract |
Wherein the lithium secondary battery comprises a positive electrode including a lithium compound other than an active material, a negative electrode, a separator, and a lithium ion-containing nonaqueous electrolyte solution, wherein an active material is applied to both surfaces of the non- A negative electrode active material capable of intercalating and deintercalating lithium ions is coated on both sides thereof, The apparent weight of the positive active material layer C x is C x1 and the apparent weight of the other positive active material layer C y is C y1 , Assuming that the apparent weight of the negative electrode active material layer A y face opposite to the C y face is A y1 and the apparent weight of the other negative active material layer A x face is A x1 , C x2 represents the amount of lithium compound per unit area of the C x plane, and C y2 represents the amount of the lithium compound per unit area of the C y plane, 0.85? C? X1 / C? Y1 ? 1.15, 0.85? A x1 / A? Y1 ? 1.15, 0.80? (A x1 + C x1 ) / (A y1 + C y1 )? 1.20, 0.1? Cx2 (g / m2)? 18, 0.1? C y2 (g / m 2)? 18, 0.60? Cy2 / Cx2 ? 1.70, 0.60? Cx2 / Cy2 ? 1.70. |