Method for preparation of nickel-cobalt-manganese ternary material with aluminum oxide coating layer by taking retired lithium ion battery as raw material

A technology of lithium-ion batteries and ternary materials, applied to electrical components, secondary batteries, battery electrodes, etc., can solve problems such as waste, secondary pollution of aluminum resources, and problems not involving the treatment of aluminum-containing alkali immersion solutions, and achieve High structural stability, strong cycle performance, and the effect of avoiding waste of aluminum resources

Active Publication Date: 2019-07-12
SUNWODA ELECTRONICS
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Problems solved by technology

[0004] Although the above-mentioned existing methods can realize the recycling of nickel-cobalt-manganese elements in decommissioned lithium-ion batteries, they do not involve the treatment of the aluminum-containing alkali immersion solution produced in the step of aluminum removal treatment, if the aluminum-containing alkali immersion solution the

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  • Method for preparation of nickel-cobalt-manganese ternary material with aluminum oxide coating layer by taking retired lithium ion battery as raw material
  • Method for preparation of nickel-cobalt-manganese ternary material with aluminum oxide coating layer by taking retired lithium ion battery as raw material
  • Method for preparation of nickel-cobalt-manganese ternary material with aluminum oxide coating layer by taking retired lithium ion battery as raw material

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Example Embodiment

[0039] Example 1

[0040] Refer to figure 1 The method of the present invention for preparing a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer using a decommissioned lithium-ion battery as a raw material includes:

[0041] S100. Disassemble the decommissioned lithium ion battery to obtain a positive electrode material containing nickel, cobalt and manganese;

[0042] S200, mixing the above-mentioned cathode material with an alkaline solution for alkaline leaching, and filtering to obtain an aluminum-containing alkaline leaching solution and a dealuminated cathode material;

[0043] S300, preparing a pure nickel-cobalt-manganese ternary material by using the above dealuminated cathode material as a raw material;

[0044] S400, mixing the above-mentioned pure nickel-cobalt-manganese ternary material and the above-mentioned aluminum-containing alkaline leaching solution, adding an acid solution and stirring to obtain a mixed suspension of aluminum hydroxide a...

Example Embodiment

[0064] Example 2

[0065] The method for preparing a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer in the second embodiment of the present invention using a decommissioned lithium ion battery as a raw material is basically the same as the first embodiment.

[0066] specific:

[0067] In step S100, the specific operation is: fully discharge the decommissioned nickel-cobalt-manganese ternary lithium ion battery, and disassemble the positive electrode plate containing nickel, cobalt and manganese, and then ultrasonically clean and peel the positive electrode plate to obtain aluminum foil and The cathode material mixture is finally dried and sieved to obtain the cathode material.

[0068] In step S200, the solute in the alkali solution is sodium hydroxide; the concentration of the alkali solution is 0.1 mol / L; the solid-to-liquid ratio of the positive electrode material and the alkali solution is 100 g / L, the alkali leaching temperature is 40°C, The immers...

Example Embodiment

[0080] Example 3

[0081] The method for preparing a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer by using a decommissioned lithium-ion battery as a raw material in Embodiment 3 of the present invention is basically the same as Embodiment 1.

[0082] specific:

[0083] In step S100, the specific operation is: fully discharge the decommissioned nickel-cobalt-manganese ternary lithium ion battery, and disassemble the positive electrode plate containing nickel, cobalt and manganese, and then ultrasonically clean and peel the positive electrode plate to obtain aluminum foil and The cathode material mixture is finally dried and sieved to obtain the cathode material.

[0084] In step S200, the solute in the alkali solution is sodium hydroxide; the concentration of the alkali solution is 0.5 mol / L; the solid-to-liquid ratio of the positive electrode material and the alkali solution is 200 g / L, the alkali leaching temperature is 50°C, The immersion time is 1h...

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Abstract

The invention discloses a method for preparation of a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer by taking a retired lithium ion battery as a raw material. The method comprises the steps of: disassembling a retired lithium ion battery to obtain a cathode material containing nickel, cobalt and manganese elements; mixing the cathode material and an alkali solutionfor alkaline leaching and filtering to obtain an aluminum-containing alkaline leaching solution and a dealuminized cathode material; taking the dealuminized cathode material as a raw material to prepare and obtain a nickel-cobalt-manganese ternary material; mixing the nickel-cobalt-manganese ternary material and the aluminum-containing alkaline leaching solution, and adding an acid solution into the mixed solution for stirring to obtain an aluminum hydroxide and nickel-cobalt-manganese ternary material mixed suspension; and putting the aluminum hydroxide and nickel-cobalt-manganese ternary material mixed suspension in an aerobic environment for calcination to obtain a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer. The method provided by the invention achieves cyclic utilization of the generated aluminum-containing alkaline leaching solution in the process of preparing the nickel-cobalt-manganese ternary material by taking the retired lithium ion batteryas a raw material and achieves the improvement of the structure stability and the cycle performance of the nickel-cobalt-manganese ternary material.

Description

technical field [0001] The invention relates to the technical field of nickel-cobalt-manganese ternary materials, in particular to a method for preparing a nickel-cobalt-manganese ternary material with an alumina coating layer by using decommissioned lithium-ion batteries as raw materials. Background technique [0002] Existing decommissioned lithium-ion battery recycling technologies can be divided into fire method and wet method; among them, fire method recovery consumes a lot of energy and is harmful to the environment; wet method recovery generally includes pretreatment, leaching of valuable metal elements, and separation of metal elements Extraction and other processes. [0003] At present, there are already some methods for recycling decommissioned lithium-ion batteries to prepare nickel-cobalt-manganese ternary materials. Among them, there is an existing method for preparing lithium nickel cobalt oxide from waste lithium-ion batteries. After processes such as binder...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M4/36H01M4/48H01M4/50H01M4/52H01M10/0525
CPCH01M4/366H01M4/48H01M4/50H01M4/52H01M10/0525H01M10/54Y02E60/10Y02W30/84
Inventor 贺理珀张耀李鲲
Owner SUNWODA ELECTRONICS
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