Preparation method and application of positive electrode slurry

• Main Authors: YANG SHAN, CHEN JIE, MO ZILIN, XIANG HAIBIAO, LI ZAIBO
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a preparation method and application of positive electrode slurry, and the preparation method comprises the following steps: S1, mixing a positive electrode active material, a conductive agent and a binder, and carrying out low-speed granulation stirring to obtain paste, wherein the stirring parameters of low-speed granulation are as follows: revolution is 0-10 r/min, rotation is 0-300 r/min, and the stirring time is 0.1-1 min; S2, performing high-speed granulation and stirring on the paste to obtain flocculent particles, wherein stirring parameters of high-speed granulation are as follows: revolution is 0-30 r/min, rotation is 100-1000 r/min, and stirring time is 0.1-5 min; S3, mixing and stirring the flocculent particles and the dispersing agent solution with full force, wherein full force stirring parameters are as follows: revolution is 0-30 r/min, rotation is 100-3000 r/min, and stirring time is 1-300 min, so that the positive electrode slurry is obtained. Compared with the prior