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Green recovery method for waste nickel cobalt lithium manganate ternary power battery

A nickel-cobalt-lithium-manganese-oxide and recovery method technology, which is applied in the field of green recycling of waste nickel-cobalt-lithium-manganese-oxide ternary power batteries, can solve the problems of serious pollution, complex process, high recycling cost, etc., achieve no pollution, improve recycling effect, The effect of effective discharge

Inactive Publication Date: 2018-03-02
WANXIANG 123 CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of complex technology, high recycling cost, and serious pollution of waste nickel-cobalt lithium manganese oxide power batteries, the present invention proposes a green recovery method for waste nickel-cobalt lithium manganese oxide ternary power batteries. The process flow can be simplified by using the invention. Reduce the use of organic reagents, especially strong acid reagents, control costs and reduce environmental pollution

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  • Green recovery method for waste nickel cobalt lithium manganate ternary power battery
  • Green recovery method for waste nickel cobalt lithium manganate ternary power battery

Examples

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Effect test

Embodiment 1

[0029] Take a group of waste nickel-cobalt-manganese-manganese ternary power batteries for complete discharge, immerse the batteries in 10% sodium chloride solution for 6 hours, rinse them with tap water after soaking, take them out and bake them at 100°C for 1.5 hours ; Move the dried nickel-cobalt lithium manganese oxide ternary power battery to a vacuum glove box, disassemble it with a cutting machine, open the cover plate of the power battery, obtain the battery core, aluminum-plastic film and tabs, and put the battery core, The aluminum-plastic film and the tabs are immersed in a caustic soda solution with a pH of 10, and the aluminum-plastic film after soaking for 2 hours ( figure 1 b) and tabs ( figure 1 c) Direct recycling. Mechanically separate the soaked electric core to obtain pure positive electrode sheet, negative electrode sheet and separator ( figure 1 a), where the diaphragm ( figure 1 a) Direct recovery. The above-mentioned positive electrode sheet and neg...

Embodiment 2

[0033] Take a group of waste nickel-cobalt-manganese-manganese ternary power batteries for complete discharge, and immerse the batteries in 15% sodium chloride solution for 12 hours. After soaking, rinse them with tap water, take them out and bake them at 120°C for 3 hours ; Move the dried nickel-cobalt lithium manganese oxide ternary power battery to a vacuum glove box, disassemble it with a cutting machine, open the cover plate of the power battery, obtain the battery core, aluminum-plastic film and tabs, and put the battery core, The aluminum-plastic film and the tabs are immersed in a caustic soda solution with a pH of 10, and the aluminum-plastic film after soaking for 5 hours ( figure 1 b) and tabs ( figure 1 c) Direct recycling. Mechanically separate the soaked electric core to obtain pure positive electrode sheet, negative electrode sheet and separator ( figure 1 a), where the diaphragm ( figure 1 a) Direct recovery. The above-mentioned positive electrode sheet and...

Embodiment 3

[0036] Take a group of waste nickel-cobalt-manganese-manganese ternary power batteries for complete discharge, and immerse the batteries in 12.5% ​​sodium chloride solution for 9 hours. After soaking, rinse them with tap water, take them out and bake them at 110°C for 2 hours ; Move the dried nickel-cobalt lithium manganese oxide ternary power battery to a vacuum glove box, disassemble it with a cutting machine, open the cover plate of the power battery, obtain the battery core, aluminum-plastic film and tabs, and put the battery core, The aluminum-plastic film and the tabs are immersed in a caustic soda solution with a pH of 11.5, and the aluminum-plastic film after soaking for 3.5 hours ( figure 1 b) and tabs ( figure 1 c) Direct recycling. Mechanically separate the soaked electric core to obtain pure positive electrode sheet, negative electrode sheet and separator ( figure 1 a), where the diaphragm ( figure 1 a) Direct recovery. The above-mentioned positive electrode sh...

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Abstract

The invention discloses a green recovery method for a waste nickel cobalt lithium manganate ternary power battery, wherein the green recovery method includes the following steps: (1) carrying out electric discharge and dilute alkali soaking of a waste battery, and recycling an aluminum-plastic film and lugs; (2) carrying out mechanical separation of an electric core, to obtain a positive electrodepiece, a negative electrode piece and a diaphragm; (3) mechanically chopping the positive electrode piece and the negative electrode piece, soaking in a caustic soda solution, washing and filtering,and carrying out vacuum drying; (4) respectively mechanically stirring and sieving positive and negative electrode materials after drying, to obtain an aluminum foil piece, a positive electrode coarsepowder, a copper foil piece and a negative electrode coarse powder; (5) carrying out ball milling and sieving of the positive electrode coarse powder and the negative electrode coarse powder to obtain a positive electrode powder, aluminum skimmings, a negative electrode powder and copper skimmings; and (6) carrying out heat treatment of the positive electrode powder and the negative electrode powder and recovering for reuse. The mechanical recovery method is adopted, fewer chemical reagents are adopted, the waste nickel cobalt lithium manganate ternary power battery is recovered, the whole process is preformed in a closed recovery environment without waste water and exhaust gas discharge, and the method is a green recovery method.

Description

technical field [0001] The invention belongs to the technical field of waste battery recycling, and in particular relates to a green recycling method for waste nickel-cobalt-lithium-manganese-oxide ternary power batteries. Background technique [0002] Nickel-cobalt lithium manganese oxide ternary power battery has been developed rapidly due to its high energy density, high output power and good low-temperature performance. It is generally believed that nickel-cobalt lithium manganese oxide ternary power battery can replace the currently widely used lithium iron phosphate power battery It is the trend of the times and the technological development route being practiced. At present, the output of nickel-cobalt-lithium-manganese oxide has reached 30,000 tons, and is growing at a rate of 30% per year, and the production technology of its ternary power battery is becoming more and more mature. [0003] At the same time, the treatment and recycling of waste nickel-cobalt lithium...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCY02W30/84H01M10/54
Inventor 石先兴王慧敏严红
Owner WANXIANG 123 CO LTD
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