Electrode piece, electrode assembly, battery monomer, battery and electric device

The embodiment of the invention provides a pole piece, an electrode assembly, a battery monomer, a battery and an electric device. The pole piece comprises a current collector and an active material layer coated on the surface of the current collector, and the current collector comprises a coating area coated with the active material layer and a tab area not coated with the active material layer. The tab area is provided with a stress blocking structure which is arranged at an interval with the coating area; the stress blocking structure is used for reducing stress transmitted to the junction of the tab area and the coating area when the tab area is deformed. According to some embodiments of the invention, the stress barrier structure is arranged in the tab region, and the stress barrier structure and the coating region are arranged at an interval. Therefore, the stress transmitted to the junction of the tab region and the coating region when the tab region is deformed is reduced, so that the risk of cracking or wrinkling of the coating region in the current collector is reduced, the risk of falling of the active material layer on the coating region is also reduced, and the product yield is improved.