Positive pole piece of battery

The utility model discloses a battery positive pole piece which comprises a current collector, a first active layer and a second active layer are sequentially arranged on the top surface and the bottom surface of the current collector, the first active layer is made of a first active substance, a conductive agent, a binder and NMP, and the second active layer is made of a first active substance, a conductive agent, a binder and NMP. The average particle size D50 of the first active substance is 3-7 m, the average particle size D50 of the second active substance is 8-12 m, and the first active substance and the second active substance are one of LiNixCoyMnzO2 or LiNixCoyAlzO2. The utility model aims to provide the positive pole piece of the battery, which can improve the reaction efficiency and has long service life. 本实用新型公开了一种电池正极极片，包括集流体，集流体的顶面和底面依次设置第一活性层和第二活性层，第一活性层的材料包括第一活性物质、导电剂、粘结剂、NMP，第二活性层的材料包括第一活性物质、导电剂、粘结剂、NMP，第一活性物质平均粒度D50为3～7µm，第二活性物质平均粒度D50为8～12µm，第一活性物质和第二活性物质为LiNixCoyMnzO2或者LiNixCoyAlzO2中的一种。本实