| 摘要 |
A nonaqueous electrolyte secondary battery includes a positive electrode 4 including a positive electrode current collector and a positive electrode mixture layer including a positive electrode active material and a binder, the positive electrode mixture layer being provided on the positive electrode current collector, a negative electrode 5, a porous insulating layer 6 interposed between the positive electrode 4 and the negative electrode 5, and a nonaqueous electrolyte. The tensile extension of the positive electrode 4 is equal to or higher than 3.0%. The charge end voltage in normal operation of the nonaqueous electrolyte secondary battery is equal to or higher than 4.3 V.
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