High-density and small-particle size nickel-cobalt-manganese hydroxide and preparation method thereof

A technology of hydroxide and nickel-cobalt-manganese, applied in the direction of nickel compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of low tap density on the surface of particles, and achieve low tap density, good sphericity, and particle size The effect of difficult size control
CN107640792AInactive Publication Date: 2018-01-30ZHUJI PAWA NEW ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUJI PAWA NEW ENERGY
Publication Date
2018-01-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-density and small-particle size nickel-cobalt-manganese hydroxide and a preparation method thereof. For the high-density and small-particle size nickel-cobalt-manganesehydroxide provided by the invention, a general chemical formula is NixCoyMnz(OH)2, wherein x+y+z=1, x is larger than or equal to 0.3 and smaller than or equal to 0.8, y is larger than or equal to 0.1and smaller than or equal to 0.4, and z is larger than or equal to 0.1 and smaller than or equal to 0.4; the particle sizes are d10 larger than or equal to 2 microns, d50 equal to 2.5-4 microns and d90 smaller than or equal to 6 microns, the tap density is larger than or equal to 1.4g / cm<3>, the specific surface area is 5-20m<2> / g, and the shape is spherical or spheroidal. The invention also discloses the preparation method of the high-density and small-particle size nickel-cobalt-manganese hydroxide. The preparation method is strong in controllability, can stably control the particle sizes ineach production batch without using a surfactant and is low in production cost, high in efficiency and good in physicochemical index of a final product.
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Description

technical field

[0001] The invention relates to a nickel-cobalt-manganese hydroxide with high density and small particle size and a preparation method thereof. Background technique

[0002] In the prior art, direct precipitation method, sol-gel method or co-precipitation method with adding complexing agent and surfactant are generally used to prepare high-density and small-particle-sized nickel-cobalt-manganese hydroxide.

[0003] The direct precipitation method is to directly react nickel-cobalt-manganese soluble salt solution with sodium hydroxide aqueous solution to form fine flocculent nickel-cobalt-manganese hydroxide precipitates. Particle Size Nickel Cobalt Manganese Hydroxide. CN1547277A discloses a method for preparing a precursor of nickel-cobalt-manganese hydroxide, the method comprising configuring a mixed salt solution with soluble nickel salt, cobalt salt and manganese salt, stirring at 20-90°C, and mixing strong alkali solution (such as hydrogen Sodium oxide...

Claims

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