Sodium-ion battery positive electrode slurry and preparation method thereof

The invention discloses sodium ion battery positive electrode slurry and a preparation method thereof, and belongs to the technical field of sodium ion batteries. According to the technical scheme, the preparation method comprises the following steps: S1, adding polyvinylidene fluoride into N-methyl pyrrolidone, and stirring to obtain a solution A; s2, adding a sodium-containing dispersant into the solution in the step S1, and stirring to obtain a solution B; s3, adding conductive carbon black powder into the solution B in the step S2, and stirring to obtain dispersion liquid A; s4, adding a layered oxide NaNi < 1/3 > Fe < 1/3 > Mn < 1/3 > O < 2 > into the dispersion liquid A in the step S3, and stirring to obtain dispersion liquid B; and S5, vacuumizing the dispersion liquid B in the step S4, and removing bubbles to prepare the sodium-ion battery positive electrode slurry. The method is simple in process, safe, environment-friendly and low in cost, sodium tripolyphosphate is adopted as a dispersing agent, th