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A method for preparing spherical nickel-cobalt lithium manganese oxide by recycling the positive electrode sheet of lithium-ion battery

A technology of nickel-cobalt lithium manganese oxide and lithium-ion batteries, which is applied in the field of lithium battery energy recovery and regeneration, can solve problems such as unstable product performance, low product capacity, and difficulty in controlling particle size, and achieve resource-saving preparation methods and promote sustainable development. Realize the effect of resource utilization

Active Publication Date: 2017-12-12
赣州市力道新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the disadvantages of particle size control, low product capacity, and low energy density in the current method of preparing positive electrode materials, this method is improved on the basis of the precipitation method, and elements such as nickel, cobalt, and manganese are deposited by adding a crystal spherical template; Specially increase the control conditions for the substrate of crystal nucleation, so the particle size of the material can be effectively regulated, and the problems of controlling the particle size distribution of battery materials and unstable product performance in the prior art can be solved.

Method used

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  • A method for preparing spherical nickel-cobalt lithium manganese oxide by recycling the positive electrode sheet of lithium-ion battery
  • A method for preparing spherical nickel-cobalt lithium manganese oxide by recycling the positive electrode sheet of lithium-ion battery
  • A method for preparing spherical nickel-cobalt lithium manganese oxide by recycling the positive electrode sheet of lithium-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) get 5000 grams of waste and old nickel-cobalt lithium manganese oxide positive electrode sheet;

[0025] (2) Pulverize the positive electrode sheet, then dissolve the aluminum with 4mol / L alkali at a temperature of 60°C and a pH value of 11, and obtain 412 grams of aluminum slag to obtain 8600 grams of nickel-cobalt lithium manganate positive electrode material powder and acetylene black and other slurries;

[0026] (3) Dissolve slurries such as nickel cobalt lithium manganese oxide positive electrode material powder and acetylene black in the acid solution, the insoluble matter is 300 grams of acetylene black, filter, and the obtained filtrate is 36L of mixed solution containing nickel, manganese, cobalt and lithium ;

[0027] (4) Transport the mixed solution after removing aluminum to the extractant tank containing sulfonated kerosene, so that the calcium, magnesium, iron, copper, zinc, lead, and aluminum in the mixed solution enter the organic phase of the acidic...

Embodiment 2

[0034] (1) Get 1000 grams of waste nickel-cobalt-lithium-manganese-oxide positive electrode sheet;

[0035] (2) Pulverize the positive electrode sheet, then dissolve the aluminum with 6 mol / L alkali at a temperature of 80°C and a pH value of 12, and 86 grams of aluminum slag to obtain 1200 grams of nickel-cobalt lithium manganate positive electrode material powder and acetylene black and other slurries;

[0036] (3) Dissolve slurries such as nickel cobalt lithium manganese oxide positive electrode material powder and acetylene black in the acid solution, the insoluble matter is 52 grams of acetylene black, filter, and the filtrate obtained is a mixed solution containing nickel, manganese, cobalt, and lithium 6L ;

[0037] (4) Transport the mixed solution after removing aluminum to the extractant tank containing sulfonated kerosene, so that the calcium, magnesium, iron, copper, zinc, lead, and aluminum in the mixed solution enter the organic phase of the acidic extractant, and ...

Embodiment 3

[0044] (1) get 2000 grams of waste and old nickel-cobalt lithium manganate positive electrode sheet;

[0045] (2) Pulverize the positive electrode sheet, then dissolve the aluminum with 8 mol / L alkali at a temperature of 90°C and a pH value of 13.5, and 186 grams of aluminum slag to obtain 2460 grams of nickel-cobalt lithium manganese oxide positive electrode material powder and acetylene black and other slurries;

[0046] (3) Dissolve slurries such as nickel cobalt lithium manganese oxide positive electrode material powder and acetylene black in the acid solution, the insoluble matter is 150 grams of acetylene black, filter, and the obtained filtrate is 15L of mixed solution containing nickel, manganese, cobalt and lithium ;

[0047] (4) Transport the mixed solution after removing aluminum to the extractant tank containing sulfonated kerosene, so that the calcium, magnesium, iron, copper, zinc, lead, and aluminum in the mixed solution enter the organic phase of the acidic ext...

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Abstract

The invention relates to the field of recycling of lithium battery energy, and provides a method for circularly preparing spherical lithium nickel cobalt manganese oxide by a lithium-ion battery positive plate. Nickel, cobalt and manganese elements are recovered from a waste battery to circularly synthesize a precursor of a cathode material; lithium is recovered to synthesize lithium carbonate; and finally, a novel spherical lithium nickel cobalt manganese oxide cathode material is synthesized by nickel-cobalt-manganese hydroxide lithium carbonate, so that main metal elements in the waste battery cathode material can be recycled, and circularly synthesized into a recycled product which is the same as an original product in performance; recycling of a plurality of metal resources is achieved; resources can be saved; and sustainable development of the battery industry is facilitated. According to the method, improvement is carried out on the basis of a precipitation method; the elements of nickel, cobalt, manganese and the like are deposited by adding a spherical wafer template; and a control condition is especially added for a crystal nucleation base, so that the particle sizes of materials can be effectively adjusted and controlled; and the problems of control on particle size distribution of battery materials, unstable product performance and the like in the prior art are solved.

Description

technical field [0001] The invention relates to the field of lithium battery energy recovery and regeneration, in particular to a spherical nickel-cobalt lithium manganese oxide. Background technique [0002] With the continuous development of the communication industry, electric vehicle industry and digital product industry, people's demand for batteries is increasing, and power and energy storage batteries have emerged as the times require. The country is introducing many policies to encourage the research and application of large batteries. It can be predicted that a large number of batteries will be produced in the near future. However, the battery has a certain period of service life. When the service life of the battery expires, it will enter the scrapping stage. With the current number of power batteries, it can be expected that a large number of waste batteries will be generated. Because batteries contain a large amount of precious metals and rare elements, which ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54H01M4/505H01M4/525H01M10/0525
CPCH01M4/505H01M4/525H01M10/0525H01M10/54Y02E60/10Y02W30/84
Inventor 李斌
Owner 赣州市力道新能源有限公司