| abstract |
An embodiment of the present invention relates to an electrode structure, a secondary battery, a battery pack, and a vehicle. An electrode structure capable of achieving excellent yield, a secondary battery having the electrode structure, a battery pack having the secondary battery, and a vehicle provided with the battery pack. According to one embodiment, an electrode structure is provided. The electrode structure includes a current collector, an active material layer, and a separator layer. The active material layer covers at least a part of at least one surface of the current collector. The separator layer has a first end coated with at least one surface of the current collector and covering the surface of the active material layer and covering the first end surface of the active material layer. The distance a from the first end face of the active material layer to the first end of the separator layer and the distance from the first side where the surface of the active material layer and the first end face of the active material layer intersect to the surface of the separator layer , And the ratio (b / a) of the distance (b) to the direction parallel to the surface of the current collector is in the range of 0.0001 to 0.5. |