| 摘要 |
PURPOSE: An electric storage device is provided to control the penetration state of electrolyte, to uniformly dope ions on the electrode, and to improve durability of the electric storage device. CONSTITUTION: An electrode laminate unit of an electric storage device includes positive electrodes, negative electrodes and a lithium electrode connected to the negative electrode. When an electrolyte solution is injected into the electric storage device, lithium ions are emitted from the lithium electrode to the negative electrode. A positive and a negative electrode current collector(20,23) have through-holes(20a,23a) that guide the lithium ions in the laminating direction. The aperture ratio of the through-holes at the edge parts(30a,31a) where the electrolyte solution is easy to be permeated is set to be smaller than the aperture ratio at central parts(30b,31b) in order to suppress the permeation. |
