Pole piece, secondary regulation and control method of pole piece and battery

In order to solve the problem that in the prior art, secondary regulation and control are difficult to perform on the performance of a pole piece after the pole piece is formed, and material waste is caused, the invention provides a pole piece and a secondary regulation and control method of the pole piece, and the secondary regulation and control method of the pole piece comprises the following steps: obtaining a rolled to-be-regulated and controlled pole piece; coating the coating surface of the to-be-regulated pole piece with a regulation solution, wherein the regulation solution comprises a dispersing agent; and drying the to-be-regulated pole piece coated with the regulation solution to obtain a regulated pole piece. 为克服现有技术中极片成型后难以对其性能进行二次调控，导致物料浪费的问题，本发明提供了一种极片及极片的二次调控方法电池，极片的二次调控方法包括以下步骤：获取已辊压后的待调控极片；在所述待调控极片的涂层表面涂覆调控溶液，所述调控溶液包括分散剂；将涂覆过调控溶液的待调控极片烘干得到调控后的极片。