COLLECTOR, SECONDARY BATTERY, ELECTRONIC DEVICE AND MANUFACTURING METHODS THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a secondary battery suitable for a wearable device, and to provide a novel power storage device.SOLUTION: A combination of a part of an electrode used for a secondary battery, specifically a current collector and an active material layer are cut into a complicated shape, which allows the electrode distant from the center of curvature to be curved further than an electrode near a center of curvature. As a result, the deviation of an end from the position of that of the electrode near the center of curvature can be suppressed, or a tension loaded on the electrode distant from the center of curvature can be relaxed.SELECTED DRAWING: Figure 2