Positive electrode material, positive electrode slurry, preparation method of positive electrode slurry, positive electrode plate and lithium ion battery

The invention belongs to the field of batteries, and particularly relates to a positive electrode material, positive electrode slurry, a preparation method of the positive electrode slurry, a positive plate and a lithium ion battery. The positive electrode material comprises a positive electrode active substance and a positive electrode doped active substance; the positive electrode active material is lithium iron phosphate primary particles, and the positive electrode doped active material is lithium iron phosphate secondary particles. According to the invention, a part of the positive active material is replaced by the positive doped active material, and after the pole piece is coated, the internal tortuosity of the coating of the pole piece is reduced, so that the volatilization rate of the coating surface and the internal solvent is balanced, thereby achieving the effect of reducing surface cracks of the positive pole piece, reducing the resistance of the pole piece and prolonging the service life of the