| 摘要 |
PROBLEM TO BE SOLVED: To improve cyclic properties of a lithium secondary battery without producing an insoluble material in an electrolyte by containing triary lamine and arylcarbazole in a non-aqueous electrolyte secondary battery consisting of a non-aqueous electrolyte including a positive electrode, a negative electrode, and a lithium salt and preferably the positive electrode or the electrolyte. SOLUTION: A non-aqueous electrolyte secondary battery comprises a positive electrode including a positive electrode active material consisting of a lithium compound such as LiCoO2 and a transition metal compound, a negative electrode having a negative electrode material capable of absorbing and discharging a non-crystal calcogen compound or oxide including three or more kinds of 1, 2, 13, 14, 15 group atoms in a periodic table, and a non-aqueous electrolyte such as propylene carbonate including a lithium salt such as LiClO4 . In this battery, triary lamine and arylcarbazole are contained. These additive quantity is preferably 1 to 30 millimol/l in the non-aqueous electrolyte or about 0.01 to 5wt.% in the positive electrode active material in total. |
