| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium ion battery capable of improving performance more by considering arrangement of a separator in accordance with the performance of the lithium ion battery to be focused. <P>SOLUTION: A lithium ion battery includes an electrode group obtained by overlapping a positive electrode, a separator and a negative electrode in this order and is formed by arranging the side higher in air permeability degree of the separator in opposition to the positive electrode, or arranging the separator so that a material is made to flow more smoothly from a positive electrode side to a negative electrode side than from the negative electrode side to the positive electrode side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
