The invention provides a spherical
lithium iron phosphate coated
lithium nickelate-cobaltate-
manganate battery material and a preparation method.
Nickel sulfate,
cobalt sulfate,
manganese sulfate,
potassium permanganate,
lithium hydroxide and
porous carbon nanospheres are added into deionized water in sequence, a lithium nickelate-cobaltate-
manganate precursor is obtained after the reaction, thenwet gel obtained after a lithium source, an
iron source, a
phosphorus source and a chelating agent are added into water is added, high-temperature
sintering is carried out after
spray drying is completed, and the spherical
lithium iron phosphate coated lithium nickelate-cobaltate-
manganate battery material is obtained. By means of the method, the
charge and discharge capacity and the
structural stability of a positive
electrode material are improved, the electrochemical capacity of the material is improved, the sizes of single-
crystal particles in material particles are increased, the densityof the particles is improved, the firm
micro structure change of the particle materials with uniform
granularity and good
sphericity is formed, the compaction density of a lithium nickelate-cobaltate-manganate ternary material is improved, the high-
magnification stability is enhanced, meanwhile,, the preparation flow is simple, the production period is short, the
raw material source is wide, and the cost is low.