POWER STORAGE DEVICE, ELECTRODE, AND ELECTRIC DEVICE

摘要

An object is to improve characteristics of a power storage device by devising the shape of an active material layer. The characteristics of the power storage device can be improved by providing a power storage device including a first electrode, a second electrode, and an electrolyte provided between the first electrode and the second electrode. The second electrode includes an active material layer. The active material layer includes a plurality of projecting portions containing an active material and a plurality of particles containing an active material, which are arranged over the plurality of projecting portions or in a space between the plurality of projecting portions.