| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable polymer electrolyte lithium secondary battery prevented from shortage caused by generation of a lithium dendrite at the time of charge-discharge, and prevented from internal short-circuit in a manufacturing process. SOLUTION: Roundnesses are provided or chamferings are conducted, at least, in two corner parts selected from the group comprising a positive electrode 2, a negative electrode 4 and an electrolyte layer 3, in a polymer electrolyte lithium secondary battery wherein unit cells of which each has structure layer in order with the lithium ion storing and releasing positive electrode 2, the lithium ion-conductive polymer electrolyte layer 3, the lithium ion storing and releasing negative electrode 4, the lithium ion-conductive polymer electrolyte layer 3, and the positive electrode 2, and in each of which an area of the negative electrode 4 is larger than that of the positive electrode 2 and a size of the electrolyte layer 3 is same to that of the negative electrode 4 are plurally stacked. |
