ELECTRODE SHEET AND APPLICATION THEREOF

The present application provides an electrode plate and an application thereof. A first function surface of a current collector in the electrode plate includes a first active layer region and a first tab region, a second function surface of the current collector includes a second active layer region corresponding to the first active layer region and a second tab region corresponding to the first tab region, and an active layer is disposed in the first active layer region and/or the second active layer region. The first tab region is provided with N through holes penetrating to the second tab region, a tab passes through a through hole, and a first section of the tab is connected to the first tab region to form a first connection region and a second section of the tab is connected to the second tab region to form a second connection region, where N ≥ 1. In the present application, a first tab region is provided with a through hole penetrating to a second tab region, a tab passes through the through hole, and two ends of the tab are respectively connected to the first tab region and the second tab region, so that two sides of a current collector may be conducted, thereby improving energy density of a lithium-ion battery.