| abstract |
A lithium battery using a silicon negative electrode and an electrolyte solution thereof are provided. SOLUTION: A lithium battery 10 of the present invention includes a silicon negative electrode 1, a lithium mixed metal oxide positive electrode 3, a separator 5 disposed between the negative electrode 1 and the positive electrode 3 to form a storage region 2, and a storage region 2. It includes an electrolyte solution to be filled, and a silicon negative electrode 1, a lithium mixed metal oxide positive electrode 3, a separator 5, and a sealing structure 6 that covers the electrolyte solution. The electrolyte solution includes an organic solvent, a lithium salt, and an additive. The additive includes a maleimide compound and vinylene carbonate. The silicon negative electrode of a lithium battery using the above electrolyte solution has higher cycle efficiency, and the operating life is further extended. [Selection] Figure 1 |