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

Inactive Publication Date: 2018-01-30
ZHUJI PAWA NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nickel, cobalt and manganese elements prepared by this method are evenly distributed, the particle size is uniform, and the particles are spherical, but the surface of the particles is still loose and the tap density is low.

Method used

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

Examples

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Embodiment 1

[0058] The high-density small particle size nickel-cobalt-manganese hydroxide of the present embodiment has a general chemical formula of Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 : d10=3.26 microns (μm), d50=3.47 microns (μm), d90=3.62 microns (μm), tap density=1.49g / cm 3 , specific surface area=12.27m 2 / g, spherical or quasi-spherical.

[0059] The preparation method of the high-density small particle size nickel-cobalt-manganese hydroxide of the present embodiment comprises the following steps:

[0060] (1) According to the general chemical formula Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 In Ni: Co: Mn molar ratio 1:1:1, prepare the nickel-cobalt-manganese soluble salt mixed aqueous solution that the total concentration of metal ions is 1.5mol / L, then prepare respectively the sodium hydroxide aqueous solution that the concentration is 8mol / L, and prepare Ammonia solution with a concentration of 10mol / L;

[0061] (2) Add mother liquor with an ammonia concentration of 0.19mol / L and a pH of...

Embodiment 2

[0075] The high-density small particle size nickel-cobalt-manganese hydroxide of the present embodiment has a general chemical formula of Ni 0.5 co 0.2 mn 0.3 (OH) 2 , d10=3.18 microns (μm), d50=3.39 microns (μm), d90=3.52 microns (μm), tap density=1.63g / cm 3 , specific surface area=13.7 m 2 / g, spherical or quasi-spherical.

[0076] The preparation method of the high-density small particle size nickel-cobalt-manganese hydroxide of the present embodiment comprises the following steps:

[0077] (1) According to the general chemical formula Ni 0.5 co 0.2 mn 0.3 (OH) 2 The molar ratio of Ni: Co: Mn is 5:2:3. Prepare a salt solution with a concentration of 1.5 mol / L of nickel, cobalt, and manganese total metal ions, and then prepare a sodium hydroxide aqueous solution with a concentration of 8 mol / L, and prepare a concentration of 10 mol. / L ammonia solution;

[0078] (2) Add mother liquor with ammonia concentration of 0.15mol / L and pH=11.78 into the sealed 100L reacti...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525
CPCY02E60/10
Inventor 张宝程磊明磊王小玮杨卓张佳峰韦韩信
Owner ZHUJI PAWA NEW ENERGY
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