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Preparation method for nickel-cobalt-manganese ternary hydroxide for lithium battery and product

A hydroxide, nickel cobalt manganese technology, applied in nickel oxide/nickel hydroxide, electrical components, battery electrodes, etc., can solve the problem of unstable physical and chemical properties, electrochemical performance and quality indicators, poor operation controllability, and high energy consumption problems, to achieve the effects of improving electrochemical properties, uniform inlay and out, and simple preparation method

Inactive Publication Date: 2010-10-20
浙江亿利泰钴镍材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The obtained crystal structure is unstable, the crystal lattice is easily deformed, and the embedding of other atoms, molecules, and ions is difficult or uneven;
[0005] (2) Poor operation controllability, unstable quality indicators such as physical and chemical properties, electrochemical properties, especially the unstable content of iron plasma that affects the safety and reliability of lithium-ion batteries;
[0006] (3) The service life of the equipment is short and the energy consumption is high;

Method used

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  • Preparation method for nickel-cobalt-manganese ternary hydroxide for lithium battery and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 112g of nickel chloride, 108g of cobalt chloride and 57g of manganese chloride to 1330ml of water, mix well, add 0.8g of oxalic acid (H 2 C 2 O 4 ) Stir for 2 hours, then modify and purify in a tubular reactor with a magnetic flux of 900 Stella to make liquid A, and modify the sodium hydroxide in a tubular reactor with a magnetic flux of 850 Stella. Purify into material liquid B; disperse material liquid A at a speed of 1.5 liters / hour and material liquid B at a speed of 0.8 liters / hour into the non-magnetic reactor, in the liquid phase with both axial flow and radial flow In the environment, the reaction temperature is controlled at 50℃, and the pH is 9.5 to 10.0. The nickel, cobalt, and manganese ions are co-precipitated through the affinity of the hydroxyl bond. A spherical nickel-cobalt-manganese ternary hydroxide and inorganic salt mixture slurry with a diameter of 9 microns. The slurry removes inorganic salts and stabilizers in a water system at 85°C to obtain a...

Embodiment 2

[0026] In 4000ml of water, add 636g of nickel sulfate, 257g of cobalt sulfate and 227g of manganese sulfate, mix well, add 5.8g of oxalic acid (H 2 C 2 O 4 ) Stir for 3 hours, then modify and purify in a tubular reactor with a magnetic flux of 350 Stella to make liquid A, and sodium hydroxide is modified and purified in a tubular reactor with a magnetic flux of 350 Stella The feed liquid B is prepared, and the feed liquid A is dispersed into the non-magnetic reactor at a speed of 1.8 liters / hour and the feed liquid B is dispersed into the non-magnetic reactor at a speed of 0.85 liters / hour, in a liquid phase environment with both axial flow and radial flow. The reaction temperature was controlled at 60°C and the pH was 9.5 to 10.0. The nickel, cobalt, and manganese ions were co-precipitated through the affinity of the hydroxyl bond. After the affinity co-precipitation, they were reconstructed and modified in a laminar flow in a natural state, and the average particle size was A ...

Embodiment 3

[0028] In 1900ml water, add 280g nickel nitrate, 270g cobalt nitrate and 113g manganese nitrate respectively, mix well, add 4.0g oxalic acid (H 2 C 2 O 4 ) Stir for 1.5 hours, then modify and purify in a tubular reactor with a magnetic flux of 950 Stella to make feed liquid A, and sodium hydroxide is modified and purified in a tubular reactor with a magnetic flux of 650 Stella Prepare feed liquid B, feed liquid A at a speed of 2.0 liters / hour, and feed liquid B at a speed of 1.0 liters / hour into the non-magnetic reaction kettle, in a liquid phase environment with both axial flow and radial flow The reaction temperature was controlled at 70℃ and the pH value was 10~11.5. The nickel, cobalt, and manganese ions were co-precipitated through the affinity of the hydroxyl bond. After the affinity co-precipitation, they were reconstructed and modified in a laminar flow in a natural state to obtain an average particle size 10 micron spherical nickel-cobalt-manganese ternary hydroxide and...

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Abstract

The invention discloses a preparation method for nickel-cobalt-manganese ternary hydroxide for a lithium battery. The preparation method comprises the following steps: dissolving nickel salt, cobalt salt and manganese salt in water to prepare water solution, mixing stabilizing agent with the water solution to obtain solution A, adding precipitating agent in the solution A for coprecipitation, and conducting purification and heat setting treatment to the obtained sediment to obtain the nickel-cobalt-manganese ternary hydroxide. The invention has the advantages that the preparation method for the nickel-cobalt-manganese ternary hydroxide is simple, the harmful gases causing environmental pollution are not caused in the process of preparation, the crystal lattices and the unit cells of the prepared nickel-cobalt-manganese ternary hydroxide are tidy, other atoms, ions and molecules are evenly embedded in and out, and thereby the electrochemical properties, the photochemical properties and the structural stability of the corresponding products are improved.

Description

Technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a preparation method and products of nickel cobalt manganese ternary hydroxide for lithium batteries. Background technique [0002] With the global warming and the nourishment of the earth's water system, people are paying more and more attention to the development of new technologies and processes for green and low-carbon energy and energy storage materials. Lithium-ion batteries have attracted more and more attention because of their high specific capacity, reproducibility, and high safety and stability. The development and popularization of the automobile industry among ordinary people around the world has further promoted the development of the power lithium-ion battery industry, so that the demand for positive electrode materials and their precursors for power lithium-ion batteries will greatly increase. [0003] At present, the precursors of cathode materials for po...

Claims

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Application Information

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IPC IPC(8): C01G53/04H01M4/1391
CPCY02E60/122Y02E60/10
Inventor 张慧杨岳定秦会明
Owner 浙江亿利泰钴镍材料有限公司
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