| abstract |
An object of the present invention is to provide an electrolyte for a non-aqueous secondary battery and a non-aqueous secondary battery that simultaneously satisfy high flame retardancy, durability at high temperature, and maintenance of battery characteristics in large current discharge at low temperature. And A non-aqueous secondary battery having a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains a phosphorus-containing compound (A), and at least a part of the positive electrode active material is active in the positive electrode. A non-aqueous secondary battery comprising an active material composite coated with a metal derivative different from a material component. [Selection] Figure 1 |