| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery capable of improving energy density and battery characteristics, such as cycle characteristics and high temperature storage characteristics.SOLUTION: In the battery, a positive electrode 21 and a negative electrode 22 are arranged to oppose each other with a separator 23 interposed therebetween, and an open circuit voltage in a completely charged state is in a range of from 4.25 V or more to 6.00 V or less. The separator 23 has a base material layer 23A and a surface layer 23B, and the surface layer 23B opposing to the positive electrode 21 is formed of at least one selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene, polypropylene and aramid. |
