A technology for recover lithium battery

A lithium battery and process technology, applied in the field of recycling technology, can solve the problem of less research and development technology for lithium iron phosphate battery recycling, and achieve the effects of high selectivity, reduced cycle period, and high product conversion rate.

Inactive Publication Date: 2019-01-11
武汉瑞杰特材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are relatively few targeted research and development technologies for lithium iron phosphate battery recycling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A lithium battery recycling process, comprising the steps of:

[0026] 1) Disassemble the lithium battery and take out the positive electrode piece, and break it into pieces with a size of 2cm 2 flakes;

[0027] 2) Mix the flaky positive electrode piece obtained in step 1) with NaOH solution (the amount of NaOH solution per gram of positive electrode piece is 10mL, and the concentration of NaOH solution is 0.5mol / L), and then stir and react at room temperature at 27°C for 15min to the positive electrode The coating on the chip is completely separated from the aluminum foil, the aluminum foil is taken out with tweezers, and the coating is obtained by filtering, and the coating is dried for later use;

[0028] 3) Mix the coating material obtained in step 2) with N-methylpyrrolidone (the amount of N-methylpyrrolidone per gram of the coating material is 14mL), stir and dissolve at 100°C for 30min, filter with suction, and The solid matter obtained by filtering is washed a...

Embodiment 2

[0031] A lithium battery recycling process, comprising the steps of:

[0032] 1) Disassemble the lithium battery and take out the positive plate, break it into 2.5cm 2 flakes;

[0033] 2) Mix the flaky positive electrode piece obtained in step 1) with NaOH solution (the amount of NaOH solution per gram of positive electrode piece is 10.5mL, and the concentration of NaOH solution is 0.5mol / L), and then stir the reaction at room temperature at 28°C for 18min to The coating on the positive electrode is completely separated from the aluminum foil, and the aluminum foil is taken out with tweezers, and then filtered to obtain the coating, and the coating is dried for later use;

[0034] 3) Mix the coating material obtained in step 2) with N-methylpyrrolidone (the amount of N-methylpyrrolidone per gram of the coating material is 15 mL), stir and dissolve at 103°C for 35 minutes, filter with suction, and The solid matter obtained by filtering is washed and dried to obtain a positive...

Embodiment 3

[0037] A lithium battery recycling process, comprising the steps of:

[0038] 1) Disassemble the lithium battery and take out the positive plate, break it into 3cm 2 flakes;

[0039]2) Mix the flaky positive electrode piece obtained in step 1) with NaOH solution (the amount of NaOH solution per gram of positive electrode piece is 11mL, and the concentration of NaOH solution is 0.5mol / L), then stir and react at room temperature at 30°C for 20min to the positive electrode The coating on the chip is completely separated from the aluminum foil, the aluminum foil is taken out with tweezers, and the coating is obtained by filtering, and the coating is dried for later use;

[0040] 3) Mix the coating material obtained in step 2) with N-methylpyrrolidone (the amount of N-methylpyrrolidone per gram of the coating material is 14mL), stir and dissolve at 105°C for 30min, filter with suction, and The solid matter obtained by filtering is washed and dried to obtain a positive electrode a...

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PUM

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Abstract

A technology for recover lithium battery includes disassemble lithium battery, taking out positive electrode sheet, and crushing into sheet. Mix the plate-like positive electrode with NaOH solution and stir at room temperature to react 15-20 min after that separation, the coating is obtain, and aluminum foil is obtained; Mix the dried coating with NMP, and adding at a temperature from 100-105 DEGC and stirring to dissolve for 30-40 min, filter by suction, washing that solid obtain by suction filtration and drying to obtain the active substance; Mix the active ingredient with the acid extract,and allowing reaction at a temperature of 60-65 DEG C for 30-40 min, filter, adding NaOH solution into that filtrate obtain by filtering until Fe 3 + is completely precipitated, filtering, washing and dry the precipitate obtained by separation to obtain Fe (OH) 3 precipitate, adding Na2CO3 solid into the filtrate obtained by separation until Li + is completely precipitated, and separating to obtain Li2CO3 solid. The recovery process provided by the invention has low energy consumption and can realize semi-continuous production.

Description

technical field [0001] The invention relates to a recovery process, in particular to a lithium battery recovery process. Background technique [0002] As a green energy source, lithium-ion batteries have been widely used in various fields, especially in automobiles, which can reduce human dependence on fossil energy and reduce greenhouse gas emissions. It is estimated that by 2020, the sales volume of new energy vehicles will exceed the five million mark, which marks that my country's new energy industry has broken through the peak and surpassed most countries in the world. At the same time, the ultra-high sales of new energy vehicles also indicates the generation of a large number of waste lithium-ion batteries and various problems brought about by them. The increasing use of lithium-ion batteries makes their recycling an urgent requirement. With the rapid development of the electric vehicle industry, it has an important impact on the research and development of its raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 罗巧玲陈志琼王啸
Owner 武汉瑞杰特材料有限责任公司
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