| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery which can prevent battery performance from degrading, while improving safety. <P>SOLUTION: A lithium ion secondary battery (a nonaqueous secondary battery) comprises: a positive electrode 10 including a positive electrode current collector 11 having multilayer structure sandwiching a resin layer 13 between metal foils 14, and a positive electrode active material layer 12 formed on the positive electrode current collector 11; and a tab electrode 41 electrically connected with the positive electrode 10. Moreover, the positive electrode current collector 11 has a connection region M where the resin layer 13 is not interposed, and the tab electrode 41 is weld and fixed to the connection region M of the positive electrode current collector 11 so as to overlap with a portion of the resin layer 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
