Method for preparing lithium nickel cobalt manganese oxide by reverse positioning of power battery and application

A technology of nickel-cobalt-manganese lithium manganese oxide and nickel-cobalt-manganese oxide, which is applied in the field of reverse positioning of power batteries to prepare nickel-cobalt manganese oxide lithium, can solve the problems of high secondary pollutant treatment cost, large consumption of raw and auxiliary materials, and obvious limitations, and achieve Low processing cost, less consumption, and the effect of eliminating material stress

Active Publication Date: 2021-04-16
GUANGDONG BRUNP RECYCLING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional method is used to treat the positive electrode sheet, aluminum needs to be treated as an impurity. The traditional method has a long process flow, consumes a lot of raw and auxiliary materials, and has high energy consumption. After treatment, it will produce secondary wastewater, and the cost of secondary pollutant treatment is high. Limitations obvious

Method used

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  • Method for preparing lithium nickel cobalt manganese oxide by reverse positioning of power battery and application
  • Method for preparing lithium nickel cobalt manganese oxide by reverse positioning of power battery and application

Examples

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Effect test

Embodiment 1

[0041] A method for preparing nickel-cobalt lithium manganese oxide by reverse positioning of a power battery, comprising the following specific steps:

[0042] (1) Disassemble the waste battery, obtain the battery cell, shell, and tab after separation, take the battery cell, disassemble the battery cell, and obtain the positive electrode sheet, negative electrode sheet, and diaphragm whose positive electrode material is nickel-cobalt lithium manganese oxide after separation;

[0043] (2) Mix the positive electrode sheet and the slagging agent calcium oxide at a weight ratio of 15:1, grind the positive electrode sheet to a particle size of 1mm, dry it at 100°C, and add metal at a weight ratio of 2:1 after cooling to room temperature. Aluminum powder, mixed well;

[0044] (3) Put the material mixed in step (2) in a self-propagating reaction furnace. Under a nitrogen atmosphere, ignite it with magnesium powder to initiate a self-propagating reaction. After cooling, remove the up...

Embodiment 2

[0051] A method for preparing nickel-cobalt lithium manganese oxide by reverse positioning of a power battery, comprising the following specific steps:

[0052] (1) Disassemble the waste battery, obtain the battery cell, shell, and tab after separation, take the battery cell, disassemble the battery cell, and obtain the positive electrode sheet, negative electrode sheet, and diaphragm whose positive electrode material is nickel-cobalt lithium manganese oxide after separation;

[0053] (2) Mix the positive electrode sheet and slagging agent calcium oxide at a weight ratio of 17:1, grind the positive electrode sheet to a particle size of 10mm, dry at 150°C, and add metal in a weight ratio of 3:1 after cooling to room temperature Aluminum powder, mixed well;

[0054] (3) placing the material in a self-propagating reaction furnace, under a nitrogen atmosphere, igniting with magnesium powder to initiate a self-propagating reaction, removing the upper layer of alumina-based smelting...

Embodiment 3

[0060] A method for preparing nickel-cobalt lithium manganese oxide by reverse positioning of a power battery, comprising the following specific steps:

[0061] (1) Disassemble the waste battery, obtain the battery cell, shell, and tab after separation, take the battery cell, disassemble the battery cell, and obtain the positive electrode sheet, negative electrode sheet, and diaphragm whose positive electrode material is nickel-cobalt lithium manganese oxide after separation;

[0062] (2) Mix the positive electrode sheet and slagging agent calcium oxide at a weight ratio of 20:1, grind the positive electrode sheet to a particle size of 20mm, dry at 180°C, cool to room temperature and add metal in a weight ratio of 5:1 Aluminum powder, mixed well;

[0063] (3) placing the material in a self-propagating reaction furnace, under a nitrogen atmosphere, igniting with magnesium powder to initiate a self-propagating reaction, removing the upper layer of alumina-based smelting slag aft...

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Abstract

The invention belongs to the technical field of lithium battery recovery, and provides a method for preparing lithium nickel cobalt manganese oxide by reverse positioning of a power battery and application, which comprises the following steps: mixing and grinding a positive plate and a slag former, drying and cooling the mixture, adding aluminum powder, uniformly mixing the components, carrying out self-propagating reaction on the uniformly mixed material, cooling the reaction product, and collecting the lower coarse nickel cobalt manganese alloy; grinding the crude nickel-cobalt-manganese alloy, adding alkali liquor, soaking the alloy again, filtering the liquid and washing and drying the filter residues to obtain porous nickel-cobalt-manganese alloy powder; then adding a lithium salt solution into the porous nickel-cobalt-manganese alloy powder, stirring the solution, dropwise adding the alkali liquor, and ageing and filtering the liquid and collecting the filter residues; cleaning and drying the filter residues to obtain precursor mixed powder, sintering and cooling the precursor mixed powder, and drying the powder to obtain the lithium nickel cobalt manganate. According to the invention, short-distance butt joint of waste and raw materials is achieved, the technological process is short, consumption of used raw materials and auxiliary materials is small, energy consumption is low, the treatment cost is low, pollutant emission is small, and the whole process is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of lithium battery recycling, in particular to a method and application for preparing nickel-cobalt lithium manganate by reverse positioning of a power battery. Background technique [0002] According to data from the Ministry of Industry and Information Technology, in 2019, the production and sales of new energy vehicles were 1.242 million and 1.206 million respectively. Among them, the production and sales of pure electric vehicles were 1.02 million and 972,000 respectively. Driven by the new energy vehicle industry, the power battery industry has developed rapidly. [0003] The large-scale promotion of new energy vehicles has driven the extensive use of power batteries. Power batteries usually have a lifespan of 5-8 years. After a certain period of use, the battery performance decays and does not meet the needs of consumers. It needs to be recycled and disassembled. The traditional recycling method is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525H01M10/54
CPCH01M10/0525H01M4/505H01M4/525H01M10/54Y02W30/84C01P2004/03C01P2006/40C01G53/44
Inventor 谢英豪余海军李长东
Owner GUANGDONG BRUNP RECYCLING TECH
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