| 摘要 |
To prevent leakage of smoke generated within a battery, and to enable more safe use of the battery. A lithium ion secondary battery is obtained by having a battery can contain an electrode group, in which a positive electrode and a negative electrode are formed with a separator interposed therebetween, together with an electrolyte solution. The battery can is an airtight metal container that has a cover. The lithium ion secondary battery is provided with, within the battery can, a part that adsorbs and/or absorbs smoke or a gas component that is generated within the battery can. |
