| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery capable of restraining deviation of ions used as charge carriers on a negative electrode. <P>SOLUTION: In the secondary battery having a positive electrode 10 wherein a positive electrode mixture 12 is coated on a positive electrode collector 11, the negative electrode 20 wherein a negative electrode mixture 22 is coated on a negative electrode collector 21, and a separator 30 interposed between the positive electrode 10 and the negative electrode 20, in which a coated area of the negative electrode mixture 22 is larger than a coated area of the positive electrode mixture 12, slits 23, 23 are arranged on the negative electrode mixture 22 of the negative electrode 20 from a coated surface of the negative electrode mixture 22 to the negative electrode collector 21 on the negative electrode 20, and the slits 23, 23 are arranged at a section located on an outer periphery of the positive electrode mixture 12 in the negative electrode mixture 22 while the positive electrode 10, the negative electrode 20, and the separator 30 are laminated. <P>COPYRIGHT: (C)2011,JPO&INPIT |
