| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery capable of improving energy density as well as improving battery characteristics such as cycle characteristics or high temperature storage characteristics. <P>SOLUTION: A positive electrode 21 and a negative electrode 22 are arranged in opposition to each other through a separator 23. The open circuit voltage at full charge is 42.5 V or more and 6.00 V or less. The separator 23 has a base layer 23A and a surface layer 23B, and the surface layer 23B facing the positive electrode 21 is composed of at least one kind out of a group of polyvinylidene fluoride, polytetrafluoroethylene. polypropilene and aramide. <P>COPYRIGHT: (C)2007,JPO&INPIT |
