| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device with a high capacity, to provide a power storage device with a high energy density, to provide a highly reliable power storage device, to provide a long-life power storage device, to provide an electrode with a high capacity, to provide an electrode with a high energy density, to provide a highly reliable electrode, or to provide a long-life electrode.SOLUTION: A power storage device includes a first electrode and a second electrode. The first electrode includes a first current collector and a first active material layer. The first active material layer includes a first active material and a first binder. The first active material is graphite. The first electrode has a separation strength F of 0.05 N/cm or more and 5 N/cm or less per unit width of a sample that is separated, the separation strength being measured when the first active material layer is separated from the first current collector after the first electrode is immersed in a solution at a temperature of 20°C or above and 70°C or below for three hours or longer.SELECTED DRAWING: Figure 1 |
