Battery grade three cobalt tetroxide, black or gray black powder. Bulk density 0.5-1.5g/cm³, true density 2.0-3.0g/cm³. It is the product of cobalt monoxide and cobalt trioxide. It is easy to absorb water in exposed air, but does not generate hydrate. The material is loose and powdery, with general fluidity. The water content before drying is generally about 15%, and the water content of the product after drying is about 0.5.

The ternary precursor material, that is, nickel-cobalt-manganese hydroxide, the chemical formula is Nixcoymnz(OH)2 ternary composite positive electrode material precursor, which is made of nickel salt, diamond salt and manganese salt, and the ratio of nickel-cobalt-manganese xyz) can be adjusted according to actual needs.

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