TAB AND BATTERY COMPRISING TAB

The present application provides a tab and a battery including the tab. The tab includes a metal conductor and an insulation sealing gasket, where the insulation sealing gasket includes a heat-sealing outer layer, an outer transition layer, a core layer, an inner transition layer and a low-softening-point inner layer connected in sequence. The tab of the present application is able to fully guarantee the bonding sealing performance and electrolyte resistance performance of the tab, ensuring the safety performance of the battery. At the same time, it is also able to effectively reduce the heat-sealing temperature and heat-sealing time, shorten the time of packaging, greatly reduce the production energy consumption, and improve the production efficiency. Moreover, it is also able to meet the safe use of the battery under high voltage, large current or direct high temperature conditions.