| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having an excellent shutdown function, in which increase of reaction resistance is limited. <P>SOLUTION: The nonaqueous electrolyte secondary battery includes a positive electrode having a positive electrode mixture layer containing at least a positive electrode active material, a negative electrode having a negative electrode mixture layer containing at least a negative electrode active material, a separator interposed between the positive electrode and negative electrode, and a nonaqueous electrolyte. The negative electrode mixture layer contains polymer A having a melting point in a temperature range of 105°C-140°C, and the mass of the polymer A per unit area of the negative electrode mixture layer is 0.015-0.22 mg/cm<SP POS="POST">2</SP>. The separator contains polymer B having a melting point in a temperature range of 105°C-140°C. <P>COPYRIGHT: (C)2013,JPO&INPIT |
