Preparation method of lithium ion battery pole piece

The invention relates to the field of lithium batteries, and discloses a preparation method of a lithium ion battery pole piece, which comprises the following steps: coating and drying positive electrode slurry in a coating and baking oven, and regulating and controlling the temperature in the oven, the frequency of a circulating fan and the frequency of a moisture removal fan so that the NMP concentration in the atmosphere of a cooling section of the coating and baking oven is less than or equal to 25%; and carrying out rolling treatment on the positive plate coated with the slurry and dried through a rolling device. According to the method, the parameters of the oven are regulated and controlled to enable the NMP concentration in the oven to be smaller than or equal to 25%, and when the NMP concentration in the oven is controlled to be smaller than or equal to 25%, PVDF cannot float upwards, so that the roller sticking phenomenon in the subsequent rolling process can be well avoided. 本发明涉及锂电领域，公开了锂离子电池极片的制备