| abstract |
The present invention relates to the battery field, and more particularly to a secondary battery and a method for manufacturing the same. The secondary battery includes a battery negative electrode, an electrolytic solution, a separator, and a battery positive electrode, wherein the battery negative electrode includes a negative electrode current collector, and the negative electrode current collector also serves as a negative electrode active material; An electrolyte and a solvent; the electrolyte is a lithium salt; the battery positive electrode includes a positive electrode current collector and a positive electrode active material layer; and the positive electrode active material layer is a positive electrode active material capable of reversibly desorbing and inserting lithium ions. including. In the present invention, since the metal, metal alloy, or metal composite serves as the negative electrode current collector and the negative electrode active material, it is not necessary to separately add the negative electrode active material, and the battery weight and volume can be efficiently reduced, and the battery In addition, the energy density of the battery is remarkably improved, the manufacturing cost is reduced, the manufacturing process is simplified, and the secondary battery of the present invention has good charge / discharge cycle performance. . [Selection] Figure 1 |