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A method for reducing TOC content in lithium battery multi-element materials

A lithium battery, multi-component technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of reducing, affecting the performance of lithium batteries, and high impurity content

Active Publication Date: 2020-07-07
JINGMEN GEM NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method for reducing the content of TOC in lithium battery multi-component materials to overcome the above problems or at least partially solve the above problems, so as to solve the technical problem that the high content of TOC or other solid particulate impurities in lithium battery multi-component materials affects the performance of lithium batteries

Method used

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  • A method for reducing TOC content in lithium battery multi-element materials

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Embodiment 1

[0084] A method for reducing TOC content in lithium battery multi-component materials. The lithium battery multi-component solution is firstly treated by a microcrystalline filtration system as an example, and then sequentially processed by an activated carbon filtration system, a primary ultrafiltration system and a secondary ultrafiltration system.

[0085] Among them, the effective use volume of the microcrystalline filtration system is 5m 3 , the flow rate of the lithium battery multi-component solution through the microcrystalline filtration system is 20m 3 / h, the use temperature is 30°C, and polyvinyl chloride is used, the particle size is 50μm; the effective use volume of the activated carbon filter system is 10m 3 , the flow rate of the lithium battery multi-component solution through the activated carbon filter system is 20m 3 / h, the operating temperature is 30°C, and its average pore size is 20μm; the effective use area of ​​the primary ultrafiltration system is 2...

Embodiment 2

[0090] A method for reducing TOC content in lithium battery multi-component materials. The lithium battery multi-component solution is firstly treated by a microcrystalline filtration system as an example, and then sequentially processed by an activated carbon filtration system, a primary ultrafiltration system and a secondary ultrafiltration system.

[0091] Among them, the effective use volume of the microcrystalline filtration system is 10m 3 , the flow rate of the lithium battery multi-component solution through the microcrystalline filtration system is 30m 3 / h, the use temperature is 30°C, and polyvinyl chloride is used, the particle size is 50μm; the effective use volume of the activated carbon filter system is 20m 3 , the flow rate of the lithium battery multi-component solution through the microcrystalline filtration system is 30m 3 / h, the operating temperature is 30°C, and its average pore size is 20μm; the effective use area of ​​the primary ultrafiltration system...

Embodiment 3

[0096] A method for reducing TOC content in lithium battery multi-component materials. The lithium battery multi-component solution is firstly treated by a microcrystalline filtration system as an example, and then sequentially processed by an activated carbon filtration system, a primary ultrafiltration system and a secondary ultrafiltration system.

[0097] Among them, the effective use volume of the microcrystalline filtration system is 10m 3 , the flow rate of the lithium battery multi-component solution through the microcrystalline filtration system is 30m 3 / h, the operating temperature is 35°C, and polyvinyl chloride is used, the particle size is 50μm; the effective use volume of the activated carbon filter system is 20m 3 , the flow rate of the lithium battery multi-component solution through the microcrystalline filtration system is 30m 3 / h, the operating temperature is 35°C, and its average pore size is 20μm; the effective use area of ​​the primary ultrafiltration ...

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Abstract

The invention provides a method used for reducing content of TOC in lithium battery multi-component materials. According to the method, a lithium battery raw material solution is subjected to microcrystal filtering and active carbon filtering treatment, and then is subjected to ultrafiltration to remove organic matters and solid suspensions in the lithium battery raw material solution; an outlet of an ammoniacal liquor generator is provided with an oil gas separation mechanism to separate organic matters in ammoniacal liquor; and nitrogen is introduced into a liquid alkali tank used for storing liquid alkali for protection. Compared with the prior, wherein lithium battery raw materials prepared via hydrometallurgy is directly applied in lithium battery preparation, the method possesses following advantages: the content of TOC in lithium battery material can be reduced effectively, and lithium battery performance is improved.

Description

technical field [0001] The invention relates to lithium battery production technology, and more specifically, to a method for reducing TOC content in lithium battery multi-component materials. Background technique [0002] Lithium battery mainly refers to a type of battery that uses lithium element as the main active material in the electrode material. Lithium batteries are light and durable, have relatively little pollution to the environment, and have excellent charge and discharge performance, and are widely used in the current battery field. [0003] In recent years, on the basis of the lithium element as the active material, a material composed of more than two elements has appeared as a battery active material, and among them, the research and application of the ternary material are better. For example, lithium, nickel, cobalt, manganese and other elements are combined into nickel-cobalt lithium manganate (chemical formula: Li(NiCoMn)O 2 ) of the ternary material. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/00
CPCB01D36/00B01D36/006B01D36/008
Inventor 许开华吕志乐绪清刘郁
Owner JINGMEN GEM NEW MATERIAL
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