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Production device and method of wide distribution micropowder-free ternary precursor

A technology for production equipment and precursors, which is applied in the field of production equipment for wide-distributed micropowder-free ternary precursors, can solve the problems of increased production costs of downstream products, inability to remove through sieving, and many micropowder particles, etc., to achieve high production efficiency , wide particle size distribution, precise and controllable particle size

Active Publication Date: 2021-12-14
广东芳源新材料集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although this method can obtain a wide distribution of ternary precursor materials, due to the limitation of the production method itself, there are inevitably more fine powder particles
Although some small particles can be removed by sieving after sintering, most of the small particles are agglomerated or bonded to large particles during sintering and cannot be removed by sieving at all.
At the same time, this will also increase the production cost of downstream products

Method used

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  • Production device and method of wide distribution micropowder-free ternary precursor
  • Production device and method of wide distribution micropowder-free ternary precursor
  • Production device and method of wide distribution micropowder-free ternary precursor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0080] (1) Prepare a nickel-cobalt-aluminum sulfate solution A according to a predetermined ratio, so that the total metal concentration in the solution A is 1.6 mol / L; prepare a sodium hydroxide solution B with a hydroxide concentration of 10.0 mol / L; Prepare ammonia solution C with an ammonia radical concentration of 9.0 mol / L;

[0081] (2) Add an appropriate amount of pure water and ammonia solution into the main reaction device as the bottom liquid, and make the concentration of ammonia radicals in the bottom liquid 0.8mol / L, stir, and add NCA ternary precursor with D50 of 10.0 μm Seed;

[0082] (3) Seal the main reaction device, pass in argon as a protective gas, pump the solution A, the solution B and the solution C into the main reaction device at the same time in proportion, control the stirring speed to 200rpm, and control the temperature at 65 °C, the pH value is controlled at 12.5, and when the liquid level of the main reaction device is full, the slurry in the mai...

Embodiment approach 2

[0087] (1) Prepare a nickel-cobalt-aluminum sulfate solution A according to a predetermined ratio, so that the total metal concentration in the solution A is 1.5 mol / L; prepare a sodium hydroxide solution B with a hydroxide concentration of 6.0 mol / L; The preparation ammonia root concentration is the ammonia solution C of 7.0mol / L;

[0088] (2) Add an appropriate amount of pure water and ammonia solution to the main reaction device as the bottom liquid, and make the concentration of ammonia radicals in the bottom liquid 0.5mol / L, stir, and add NCA ternary precursor with a D50 of 9.0 μm Seed;

[0089] (3) Seal the main reaction device, feed nitrogen gas as a protective gas, pump the solution A, the solution B and the solution C into the main reaction device at the same time in proportion, control the stirring speed to 300rpm, and control the temperature at 55°C , the pH value is controlled at 11.5, and when the liquid level of the main reaction device is full, the slurry in th...

Embodiment approach 3

[0094] (1) Prepare a nickel-cobalt-aluminum sulfate solution A according to a predetermined ratio, so that the total metal concentration in the solution A is 2.0 mol / L; prepare a sodium hydroxide solution B with a hydroxide concentration of 8.0 mol / L; The ammonia solution C whose concentration of ammonia root is 8.0mol / L is prepared;

[0095] (2) Add an appropriate amount of pure water and ammonia solution into the main reaction device as the bottom liquid, and make the concentration of ammonia radicals in the bottom liquid 0.7mol / L, stir, and add NCA ternary precursor with D50 of 10.0 μm Seed;

[0096] (3) Seal the main reaction device, feed nitrogen gas as a protective gas, pump the solution A, the solution B and the solution C into the main reaction device at the same time in proportion, control the stirring speed to 300rpm, and control the temperature at 60°C , the pH value is controlled at 12.2, and when the liquid level of the main reaction device is full, the slurry in...

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Abstract

The invention discloses a production device and method of a wide-distribution micropowder-free ternary precursor, which has a simple structure and high effective efficiency, and is suitable for continuous production of a wide-distribution non-micropowder ternary precursor. The ternary precursor composition is Ni x co y m 1‑x‑y (OH) 2 , wherein, 0.70≤x≤0.98, 0.02≤y≤0.2, x+y<1, M is Mn or Al, and the particle size distribution meets the following characteristics: 1.0μm<Dmin<4.0μm, 4.0μm<D10<7.0μm, 9μm < D50 < 12 μm, 17.0 μm < D90 < 25.0 μm. The obtained wide-distribution micropowder-free ternary precursor has good shape and good performance, which is of great significance for improving the comprehensive performance of the ternary precursor battery.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a production device for a wide-distribution micropowder-free ternary precursor, and a method for producing a wide-distribution micropowder-free ternary precursor with the production device. Background technique [0002] Lithium-ion batteries are developing rapidly in the electric vehicle application market. It has become an urgent need to develop lithium-ion batteries with high specific energy density, reduce the cost of power batteries and improve the competitiveness of new energy vehicles against fuel vehicles. The ternary cathode material has a higher reversible capacity and voltage platform than the lithium iron phosphate material, and has a more obvious cost advantage than the lithium cobalt oxide material, and has become the main choice for electric passenger vehicles. [0003] The ternary precursor is the key material for the production of the ternary cathod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18C01G53/00H01M4/505H01M4/525H01M4/485
CPCB01J19/1862B01J19/1856C01G53/006H01M4/505H01M4/525H01M4/485C01P2004/51C01P2004/03Y02E60/10
Inventor 陈万超刘京星李沛荣杨燮宁李振辉吴芳罗爱平
Owner 广东芳源新材料集团股份有限公司