Method for recycling nickel-cobalt-manganese ternary anode material

A technology of ternary materials and positive electrode materials, which is applied in the field of waste battery recycling, can solve the problems of component segregation, poor separation effect, and inability to ensure the uniformity of oxides, etc., and achieve the effect of promoting popularization and reducing costs

Active Publication Date: 2013-07-10
天齐锂业(江苏)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method realizes the recycling of nickel-cobalt-manganese ternary positive electrode materials, but the separation effect is not good by crushing and sieving to separate nickel-cobalt-manganese lithium manganese oxide and aluminum foil; the nickel-cobalt-manganese carbonate precursor is obtained by carbonate precipitation method , it is easy to cause segregation of components during the preparation process, and the uniformity of the distribution of oxide elements cannot be guaranteed, which affects the electrochemical performance of the positive electrode material; the use of organic solvents is easy to cause secondary pollution

Method used

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  • Method for recycling nickel-cobalt-manganese ternary anode material

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Embodiment 1

[0033] Embodiment 1 adopts the method of the present invention to recycle nickel-cobalt-manganese ternary positive electrode material

[0034] Discharge the residual power of the waste nickel-cobalt-lithium-manganese-oxide battery, disassemble the battery, take out the positive electrode sheet, and recycle the battery case according to aluminum shell, steel shell, plastic, etc.; calcinate the nickel-cobalt lithium-manganese oxide positive electrode sheet at 1000°C for 0.5h.

[0035]Take 100 kg of the calcined nickel-cobalt lithium manganese oxide positive plate, stir and leaching with 10wt% sulfuric acid, add 1 kg of sodium thiosulfate during the leaching process, and filter to obtain a mixture of nickel sulfate, cobalt sulfate, manganese sulfate, aluminum sulfate and lithium sulfate. solution. The pH value of the mixed solution was adjusted to 4.5 to form aluminum hydroxide precipitate, and the aluminum hydroxide was removed by filtration to obtain a mixed solution of nickel ...

Embodiment 2

[0039] Embodiment 2 adopts the method of the present invention to recycle nickel-cobalt-manganese ternary positive electrode material

[0040] Discharge the residual power of the waste nickel-cobalt-lithium manganese oxide battery, disassemble the battery, take out the positive plate, and recycle the battery case according to aluminum shell, steel shell, plastic, etc.; bake the nickel-cobalt lithium manganese oxide positive plate at 700°C for 3 hours.

[0041] Take 100 kg of the calcined nickel-cobalt lithium manganese oxide positive electrode sheet, and use 15wt% sulfuric acid to stir and leach, add 0.8 kg of sodium thiosulfate during the leaching process, and obtain nickel sulfate, cobalt sulfate, manganese sulfate, aluminum sulfate and lithium sulfate by filtering after leaching mixture. The pH value of the mixed solution was adjusted to 5 to form aluminum hydroxide precipitate, and the aluminum hydroxide was removed by filtration to obtain a mixed solution of nickel sulfat...

Embodiment 3

[0045] Embodiment 3 adopts the method of the present invention to recycle nickel-cobalt-manganese ternary positive electrode material

[0046] Discharge the residual power of the waste nickel-cobalt-lithium-manganese-oxide battery, disassemble the battery, take out the positive electrode sheet, and recycle the battery case according to aluminum shell, steel shell, plastic, etc.; roast the nickel-cobalt lithium-manganese oxide positive electrode sheet at 400°C for 5 hours.

[0047] Take 100kg of the calcined nickel-cobalt lithium manganese oxide positive electrode sheet, and use 12wt% sulfuric acid to stir and leach, add 1.2kg of sodium thiosulfate during the leaching process, and filter to obtain nickel sulfate, cobalt sulfate, manganese sulfate, aluminum sulfate and lithium sulfate after leaching. mixture. The pH value of the mixed solution was adjusted to 6 to form aluminum hydroxide precipitate, and the aluminum hydroxide was removed by filtration to obtain a mixed solution...

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Abstract

The invention relates to a method for recycling a nickel-cobalt-manganese ternary anode material, belongs to the technical field of recovery of waste cells, and solves the technical problem that a method for recycling the nickel-cobalt-manganese ternary anode material is provided. The method for recycling the nickel-cobalt-manganese ternary anode material comprises a step of removing a binder from the positiveplate of the nickel-cobalt-manganese ternary material by thermal treatment, and the method for removing the binder in the positive plate of the nickel-cobalt-manganese ternary material is thermal treatment of the positive plate of the nickel-cobalt-manganese ternary anode material at 400-1000 DEG C for 0.5-5 hours.

Description

technical field [0001] The invention relates to a method for recycling a nickel-cobalt-manganese ternary positive electrode material, and belongs to the technical field of waste battery recycling. Background technique [0002] Nickel-cobalt-manganese ternary cathode materials are developed from binary Ni-Mn-based materials. In 2001, OhZuku and Makimura synthesized the ternary composite material LiNi of nNi:nCo:nMn=1:1:1 for the first time. 1 / 3 co 1 / 3 mn 1 / 3 o 2 At the same time, Canada Dahn et al. studied the influence of composition changes on the crystal structure, capacity, rate discharge and thermal stability of positive electrode materials. Although LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 The research time is not long, but because of its relationship with LiCoO 2 It has a similar structure and has a good research basis. Once it is proposed, it is considered to be the most likely to replace LiCoO 2 , received strong support from governments around the world. [0003] Ternar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54
CPCC01G53/50C01G53/006C01P2004/61H01M10/54Y02W30/84
Inventor 熊仁利王平黄春莲严新星王梓丞何霞
Owner 天齐锂业(江苏)有限公司
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