Electrode plate and battery

The utility model relates to the technical field of battery energy, in particular to an electrode plate and a battery. The electrode plate comprises a composite current collector, a tab and a riveting piece, the composite current collector comprises a supporting layer, and a first metal layer and a second metal layer which are respectively positioned on two opposite sides of the supporting layer; the tab comprises a first metal belt, and a main body part of the first metal belt is attached to the first metal layer; the riveting piece sequentially penetrates through the first metal belt and the composite current collector, so that an extension section penetrating through the current collector is formed on the first metal belt, and one end, far away from the main body part of the first metal belt, of the extension section abuts against the second metal layer. The first metal layer and the second metal layer of the composite current collector are conducted through the first metal belt and the extension section o