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Method for producing Ni-Co-Mn ternary hydroxide

A hydroxide and production method technology, applied in the directions of nickel oxide/nickel hydroxide, manganese oxide/manganese hydroxide, cobalt oxide/cobalt hydroxide, etc. Cobalt manganese hydroxide has problems such as wide particle size distribution and low yield, and achieves the effect of controllable morphology, narrow particle size distribution and stable performance.

Inactive Publication Date: 2016-03-16
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production methods of nickel-cobalt-manganese hydroxide are different. At present, single-pot batch and single-pot continuous synthesis processes are generally used for production. The single-pot batch production process has a low yield and the single-pot continuous production process has a high yield. The wide particle size distribution of nickel-cobalt-manganese hydroxide affects the performance of nickel-cobalt-manganese ternary hydroxide

Method used

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  • Method for producing Ni-Co-Mn ternary hydroxide
  • Method for producing Ni-Co-Mn ternary hydroxide
  • Method for producing Ni-Co-Mn ternary hydroxide

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A continuous production method of nickel cobalt manganese hydroxide includes the following steps:

[0040] (1) Add 1.5 mol / L of molten metal (weigh a certain proportion of nickel sulfate, cobalt sulfate, and manganese sulfate crystals into the dissolving kettle, add a certain amount of pure water to prepare a solution), 5.0 mol / L of hydroxide Sodium solution and 5.0mol / L ammonia solution are added into the nucleation reactor according to the flow ratio (10:5:1) through the metering pump at the flow rate of the molten metal (3L / h) for nucleation reaction;

[0041] (2) When the grain size of the nucleation reactor crystal nucleus grows to 4-5μm, the nucleation reaction is over. Use the transfer pump to transfer the crystal nucleus to the intermediate feeding kettle; add the bottom liquid to the crystal nucleus growth reactor (the bottom liquid contains a certain amount of Pure water, ammonia water), turn on the crystal nucleus growth reactor stirring device, and continuously a...

Embodiment 2

[0045] A continuous production method of nickel-cobalt-manganese hydroxide includes the following steps:

[0046] (1) Add 2.0mol / L of molten metal (weigh a certain proportion of nickel sulfate, cobalt sulfate, and manganese sulfate crystals into the dissolving kettle, add a certain amount of pure water to prepare a solution), 5.0mol / L of hydroxide Sodium solution and 5.0 mol / L ammonia solution are added to the nucleation kettle according to the flow ratio (10:5:1) through the metering pump at the flow rate of the molten metal (3L / h);

[0047] (2) When the grain size of the nucleation reactor crystal nucleus grows to 4-5μm, the nucleation reaction is over. Use the transfer pump to transfer the crystal nucleus to the intermediate feeding kettle; add the bottom liquid to the crystal nucleus growth reactor (the bottom liquid contains a certain amount of Pure water, ammonia water), turn on the nucleus growth reactor stirring device, and continuously add the crystal nuclei to be grown fr...

Embodiment 3

[0051] A continuous production method of nickel-cobalt-manganese hydroxide includes the following steps:

[0052] (1) Add 1.0 mol / L of molten metal (weigh a certain proportion of nickel sulfate, cobalt sulfate, and manganese sulfate crystals into the dissolving kettle, add a certain amount of pure water to prepare a solution), 5.0 mol / L of hydroxide Sodium solution and 5.0mol / L ammonia solution are added into the nucleation reactor according to the flow ratio (10:5:1) through the metering pump at the flow rate of the molten metal (3L / h) for nucleation reaction;

[0053] (2) When the grain size of the nucleation reactor crystal nucleus grows to 4-5μm, the nucleation reaction is over. Use the transfer pump to transfer the crystal nucleus to the intermediate feeding kettle; add the bottom liquid to the crystal nucleus growth reactor (the bottom liquid contains a certain amount of Pure water, ammonia water), turn on the nucleus growth reactor stirring device, and continuously add the c...

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Abstract

The invention discloses a method for producing a Ni-Co-Mn ternary hydroxide, and relates to a continuous synthesis method for a Ni-Co-Mn ternary hydroxide for a lithium ion battery. The method is characterized by comprising the following steps in a production process: first, adding a sodium hydroxide solution and an ammonia water solution into a Ni-Co-Mn metal salt solution, controlling the pH value of a reaction system to be 10.0-12.0, and carrying out a crystal nucleus creating reaction till the granularity of a created crystal nucleus reaches 3-5 [mu]m, so as to obtain a mixed solution containing the crystal nucleus; then, converging the mixed solution containing the crystal nucleus, the Ni-Co-Mn metal salt solution, the sodium hydroxide solution and the ammonia water solution, controlling the pH value of a system to be 9.5-11.5, carrying out a crystal nucleus growth reaction, and carrying out aging, filtration, washing and drying to obtain the Ni-Co-Mn ternary hydroxide. The Ni-Co-Mn ternary hydroxide produced according to the method is stable in product performance, narrow in granularity distribution, less in micro powder, and controllable in morphology.

Description

Technical field [0001] A production method of nickel-cobalt-manganese ternary hydroxide relates to a continuous synthesis method of nickel-cobalt-manganese ternary hydroxide for lithium ion batteries. Background technique [0002] With the continuous development of the digital product industry, people's demand for batteries is increasing. Lithium nickel cobalt manganese oxide is an important cathode material for lithium batteries, and its production and use are increasingly widespread, and the market demand is large. The production methods of nickel, cobalt and manganese hydroxides are different. At present, single-tank batch and single-tank continuous synthesis processes are generally used. The single-tank batch-type production process has a low yield, and the single-tank continuous production process has a high yield. The nickel-cobalt-manganese hydroxide has a wide particle size distribution, which affects the performance of the nickel-cobalt-manganese ternary hydroxide. Sum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G51/04C01G45/02H01M4/505H01M4/525H01M10/0525
CPCC01G45/02C01G51/04C01G53/04H01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 常全忠江名喜刘进才褚凤辉王娟辉王兆哲杨平万雲云
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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