| 摘要 |
The purpose of the present invention is to prevent misalignment of the electrodes and the separator when high temperatures occur, while also employing a separator having heat resistance. This lithium ion secondary cell has an electrode laminate (10) in which negative electrodes (21) and electrode assemblies (25) with attached separators are laminated in alternating fashion. The electrode assemblies (25) with attached separators have two separator sheets (22) made from a material that does not melt even when heated to 180°C, and a positive electrode arranged therebetween. The juxtaposed separator sheets (22) are secured to one another by a meshing structure (26) comprising recessed portions and protruding portions, formed in at least portions of at least two neighboring sides among the peripheral edge portions thereof. |
