| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery that is improved in low-temperature characteristic.SOLUTION: A non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material layer formed on a positive electrode current collector, a negative electrode containing a negative electrode active material layer formed on a negative electrode current collector, a separator, and electrolyte solution. The positive electrode active material layer includes a first positive electrode active material having a spinel structure, and a second positive electrode active material having a layered crystal structure. The negative electrode active material layer includes a graphite material as an anode electrode active material, and water-based binder. The mass ratio (A/B) of the first positive electrode active material (A) and the second positive electrode active (B) is in the range of 70/30 to 95/5.SELECTED DRAWING: Figure 2 |
