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Regeneration and recovery method of retired nickel cobalt lithium manganate battery cathode material

A technology of lithium nickel cobalt manganese oxide and battery positive electrode, which is applied in the field of regeneration and recovery of positive electrode materials, can solve the problems of polluted environment, low metal recovery rate, and complicated operation of treatment methods, and achieve the effect of reducing costs

Inactive Publication Date: 2020-07-14
GUANGDONG SHUNDE IND DESIGN INST GUANGDONG SHUNDE INNOVATIVE DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the object of the present invention is to provide a regeneration and recovery method for the positive electrode material of the decommissioned nickel-cobalt lithium manganese oxide battery, so as to solve the technical problems of complex operation, high cost, low metal recovery rate and environmental pollution in the processing method in the prior art; The regeneration recovery method of this application has a simple flow process and a high recovery rate, which is convenient for large-scale promotion

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  • Regeneration and recovery method of retired nickel cobalt lithium manganate battery cathode material
  • Regeneration and recovery method of retired nickel cobalt lithium manganate battery cathode material
  • Regeneration and recovery method of retired nickel cobalt lithium manganate battery cathode material

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Embodiment 1

[0029] In this embodiment, a method for regenerating and recycling the cathode material of a decommissioned nickel-cobalt lithium manganate battery comprises the following steps:

[0030] (1) Discharge the decommissioned lithium-ion battery three times to reduce the energy in the battery system, and then disassemble it to obtain the positive electrode sheet;

[0031] (2) Put the positive electrode sheet obtained in step (1) into a calciner, calcinate at 500°C, take it out for about 30 minutes, pass through a 200-mesh screen to remove aluminum foil and other impurities, and obtain a high-purity positive electrode material;

[0032] (3) adding lithium salts such as lithium nitrate, lithium carbonate, lithium hydroxide to the positive electrode material obtained in step (2) and mixing by ball milling;

[0033] (4) Put the mixed material obtained in step (3) into an atmosphere calcination equipment, and calcine at a high temperature of 450° C. for 5 hours under an oxygen atmospher...

Embodiment 2

[0036] In this embodiment, a method for regenerating and recycling the cathode material of a decommissioned nickel-cobalt lithium manganate battery comprises the following steps:

[0037] (1) Discharge the decommissioned lithium-ion battery three times to reduce the energy in the battery system, and then disassemble it to obtain the positive electrode sheet;

[0038] (2) Put the positive electrode sheet obtained in step (1) into a calciner, calcined at 300°C, take it out for about 6 hours, pass through a 200-mesh screen to remove aluminum foil and other impurities, and obtain a high-purity positive electrode material;

[0039] (3) adding lithium salts such as lithium nitrate, lithium carbonate, lithium hydroxide to the positive electrode material obtained in step (2) and mixing by ball milling;

[0040] (4) Put the mixed material obtained in step (3) into the atmosphere calcination equipment, calcine at 600° C. for 4 hours under an oxygen atmosphere, and obtain a repaired posi...

Embodiment 3

[0043] In this embodiment, a method for regenerating and recycling the cathode material of a decommissioned nickel-cobalt lithium manganate battery comprises the following steps:

[0044] (1) Discharge the decommissioned lithium-ion battery 5 times to reduce the energy in the battery system, and then disassemble it to obtain the positive electrode sheet;

[0045] (2) Put the positive electrode sheet obtained in step (1) into a calciner, calcined at 600°C, take it out for about 30 minutes, pass through a 200-mesh screen to remove aluminum foil and other impurities, and obtain a high-purity positive electrode material;

[0046] (3) adding lithium salts such as lithium nitrate, lithium carbonate, lithium hydroxide to the positive electrode material obtained in step (2) and mixing by ball milling;

[0047] (4) Put the mixed material obtained in step (3) into an atmosphere calcination equipment, calcine at a high temperature of 300° C. for 6 hours under an oxygen atmosphere, and ob...

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Abstract

The invention discloses a regeneration and recovery method of a retired lithium nickel cobalt manganese oxide battery cathode material, which comprises the following steps: (1) discharging and disassembling a retired lithium ion battery to obtain a positive plate; (2) putting the positive plate obtained in the step (1) into a calcining furnace, performing calcining and sieving to obtain a cathodematerial with relatively high purity; (3) adding a lithium salt into the cathode material obtained in the step (2), and carrying out ball-milling mixing; (4) performing high-temperature calcination and water washing on the mixed material subjected to ball milling and mixing in the step (3) to obtain a repaired cathode material; and (5) adding a lithium salt into the cathode material obtained in the step (4), carrying out ball milling and mixing, and carrying out high-temperature calcination at 800-850 DEG C for 6-10 hours to obtain the regenerated nickel cobalt lithium manganate battery cathode material. According to the method, the material is repaired and reutilized through adoption of a direct regeneration repairing method, and cost increase and environmental pollution caused by acid and alkali treatment of the material are avoided.

Description

technical field [0001] The invention relates to a method for regeneration and recovery of positive electrode materials, in particular to a method for regeneration and recovery of positive electrode materials of decommissioned nickel-cobalt lithium manganese oxide batteries. Background technique [0002] New energy vehicles have shown explosive growth under the guidance of national policies. In 2016, the sales volume of new energy vehicles in China reached 507,000, making it the largest new energy vehicle market in the world. New energy vehicles have the advantage of coping with environmental pollution and energy shortages. However, power batteries cannot be effectively recycled after they are scrapped, which will cause environmental pollution and waste of resources. According to the calculations of authoritative organizations, for ternary material power batteries, the market size created by recycling metals such as cobalt, nickel, manganese, lithium, iron and aluminum from ...

Claims

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Application Information

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IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525H01M10/54
CPCC01G53/006H01M4/505H01M4/525H01M10/0525H01M10/54C01P2002/72C01P2004/03Y02W30/84Y02E60/10
Inventor 陈健周鹏程陆守强
Owner GUANGDONG SHUNDE IND DESIGN INST GUANGDONG SHUNDE INNOVATIVE DESIGN INST
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