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A kind of preparation method of nickel-cobalt-manganese ternary precursor material and lithium ion battery

A nickel-cobalt-manganese ternary and precursor technology, applied in battery electrodes, secondary batteries, chemical instruments and methods, etc., can solve the problems of difficult recovery, waste, complicated purification and impurity removal process, etc., and achieves low production cost, easy to use The effect of short operation and process

Active Publication Date: 2022-05-17
GUANGDONG JIANA ENERGY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the crude cobalt salt is leached by the traditional acid method, a large number of impurities such as calcium, magnesium, and manganese will enter the leachate, making the subsequent purification and impurity removal process complicated, the process flow is long, the consumption of impurity remover, acid and alkali is large, and the nickel, Manganese and other elements are difficult to fully recover, resulting in waste
[0004] At present, there is no reproducible and easy-to-operate method to solve the above problems, so that the industrial application of nickel-cobalt-manganese ternary precursors is limited by the cost to a certain extent.

Method used

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  • A kind of preparation method of nickel-cobalt-manganese ternary precursor material and lithium ion battery
  • A kind of preparation method of nickel-cobalt-manganese ternary precursor material and lithium ion battery
  • A kind of preparation method of nickel-cobalt-manganese ternary precursor material and lithium ion battery

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Embodiment 1

[0058] For the preparation method of the nickel-cobalt-manganese ternary precursor material provided in this embodiment, refer to figure 1 , including the following steps:

[0059] (1) Put crude cobalt hydroxide, ammonium sulfate, ammonia water, etc. into the reaction tank A, and leaching for 3 hours at a stirring speed of 200rpm, a liquid-solid ratio of 8:1, and 50°C, wherein the total ammonia concentration is 160g / L; the molar ratio of ammonia water to ammonium salt is 2.5:1; filter to obtain the first filtrate and the first filter residue.

[0060] (2) The first filtrate obtained in step (1) is mixed with 25% P507+75% sulfonated kerosene solution according to the ratio of 1:1 for extraction; 2.0mol / L sulfuric acid is used for back extraction, and the obtained raffinate is passed through After degreasing, it can return to step (1) for recycling. After stripping the P507 sulfonated kerosene solution, add 5mol / L hydrochloric acid solution for washing and purification; the w...

Embodiment 2

[0068] The preparation method of the nickel-cobalt-manganese ternary precursor material provided in this embodiment specifically includes the following steps:

[0069] (1) Put crude cobalt hydroxide, ammonium sulfate, ammonia water, etc. into the reaction tank A, and leaching for 3 hours at a stirring speed of 200rpm, a liquid-solid ratio of 8:1, and 50°C, wherein the total ammonia concentration is 150g / L; the molar ratio of ammonia water to ammonium salt is 3.0:1; filter to obtain the first filtrate and the first filter residue.

[0070] (2) The first filtrate obtained in step (1) is mixed with 25% P507+75% sulfonated kerosene solution according to the ratio of 1:1 for extraction; 2.0mol / L sulfuric acid is used for back extraction, and the obtained raffinate is passed through After degreasing, it can return to step (1) for recycling. After stripping the P507 sulfonated kerosene solution, add 5mol / L hydrochloric acid solution for washing and purification; the washing solutio...

Embodiment 3

[0077] The preparation method of the nickel-cobalt-manganese ternary precursor material provided in this embodiment specifically includes the following steps:

[0078] (1) Put crude cobalt hydroxide, ammonium sulfate, ammonia water, etc. into the reaction tank A, and leaching for 3 hours at a stirring speed of 200rpm, a liquid-solid ratio of 8:1, and 50°C, wherein the total ammonia concentration is 150g / L; the molar ratio of ammonia water to ammonium salt is 3.0:1; filter to obtain the first filtrate and the first filter residue.

[0079] (2) The first filtrate obtained in step (1) is mixed with 25% P507+75% sulfonated kerosene solution according to the ratio of 1:1 for extraction; 2.0mol / L sulfuric acid is used for back extraction, and the obtained raffinate is passed through After degreasing, it can return to step (1) for recycling. After stripping the P507 sulfonated kerosene solution, add 5mol / L hydrochloric acid solution for washing and purification; the washing solutio...

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Abstract

The invention relates to the field of preparation of positive electrode materials for lithium-ion batteries, in particular to a preparation method of a nickel-cobalt-manganese ternary precursor material and a lithium-ion battery. The method uses crude solid cobalt hydroxide as a raw material, and realizes the recovery of the three elements of nickel, cobalt and manganese in the crude cobalt hydroxide. The raw materials for the preparation of ternary lithium-ion battery precursors can be quickly obtained, and high-purity, low-impurity nickel-cobalt-manganese ternary precursor materials can be prepared. The full recovery of valence metals.

Description

technical field [0001] The invention relates to the technical field of preparation of positive electrode materials for lithium ion batteries, in particular to a method for preparing a nickel-cobalt-manganese ternary precursor material and a lithium-ion battery. Background technique [0002] The nickel-cobalt-manganese ternary precursor is the front-end raw material for the preparation of lithium-ion battery cathode materials, and it is also a highly customized standard product. The performance indicators of the finished ternary precursor will affect the physical and chemical properties of the finished cathode material, which in turn will affect the electrochemical performance of lithium batteries. make an impact. The nickel-cobalt-manganese ternary precursor is actually a nickel-cobalt-manganese hydroxide, and its preparation method is mainly co-precipitation method, using nickel salt, cobalt salt, and manganese salt as raw materials, and saline-alkali neutralization in ammo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525
CPCC01G53/006H01M4/505H01M4/525H01M10/0525C01P2002/72C01P2004/61C01P2006/80Y02E60/10
Inventor 黄亚祥贺剑明唐攀毕东亚
Owner GUANGDONG JIANA ENERGY TECH CO LTD