| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery excellent in cycle characteristic. <P>SOLUTION: The nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a porous insulating layer, and nonaqueous electrolyte. The porous insulating layer is interposed between the positive electrode and the negative electrode. The nonaqueous electrolyte is contained at least in the porous insulating layer. The mixture layer of the positive electrode and the porous insulating layer each include a structure retainer. As the structure retainer, a ceramic particle of a dendrite, carbon fiber or the like is used, and expansion in a thickness direction of a negative electrode active substance layer is controlled. <P>COPYRIGHT: (C)2009,JPO&INPIT |
