Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for recycling waste lithium batteries

A waste lithium battery and process technology, applied in the direction of secondary battery, battery recycling, recycling technology, etc., can solve the problems that the recycling process is difficult to realize industrialization, generate a large amount of waste gas or waste liquid, and the recycling cost is high, and achieve industrial application. High prospects, the effect of recycling and reuse, and low cost

Inactive Publication Date: 2020-08-28
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a process for recovering waste lithium batteries, so as to solve the disadvantages of complex operation, high recovery cost, and large amount of waste gas or waste liquid in the existing process for recovering valuable metals from waste batteries, which in turn leads to the recovery process Difficult to achieve industrialization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for recycling waste lithium batteries
  • Process for recycling waste lithium batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a process for recycling waste lithium batteries, comprising the following steps:

[0031] Prepare the deep eutectic solvent: mix and heat the quaternary ammonium salt and the amine compound to obtain the deep eutectic solvent, and the quaternary ammonium salt is selected from one or more of choline chloride, choline acetate or acetylcholine Mixing, the amine compound is selected from one or more mixing of urea, ethanolamine, triethanolamine;

[0032] Leaching: using the deep eutectic solvent to leach the positive electrode sheet disassembled from the waste lithium battery to obtain a metal-containing solution and an aluminum foil current collector.

[0033] In this embodiment, the high-value metals in the positive electrode sheets dismantled from waste lithium batteries can be recovered and reused by leaching with a deep eutectic solvent. It should be noted that the waste lithium battery in this embodiment refers to a lithium battery in which t...

Embodiment 2

[0035] This embodiment provides a process for recycling waste ternary lithium batteries. The waste ternary lithium batteries are nickel-cobalt lithium manganese oxide batteries. The process includes the following steps:

[0036] Battery pretreatment: Disassemble the waste ternary lithium battery to obtain the positive electrode sheet, clean and dry the positive electrode sheet, and then coarsely crush the positive electrode sheet to 80 mesh;

[0037]Prepare the deep eutectic solvent: mix and heat choline chloride and urea according to the molar ratio of 1:1, the heating temperature is 90°C, and the heating time is 5-8 hours to obtain the deep eutectic solvent;

[0038] Leaching: use the above-mentioned prepared deep eutectic solvent to leach the positive electrode sheet of the ternary battery that has been pretreated by the battery to obtain a metal-containing solution and an aluminum foil current collector; where the mass of the positive electrode sheet of the ternary battery ...

Embodiment 3

[0046] This embodiment provides a process for recycling waste ternary lithium batteries. The waste ternary lithium batteries are nickel-cobalt lithium manganese oxide batteries. The process includes the following steps:

[0047] Battery pretreatment: disassemble the waste ternary lithium battery to obtain the positive electrode sheet, clean and dry the positive electrode sheet, and then coarsely crush the positive electrode sheet to 120 mesh;

[0048] Prepare the deep eutectic solvent: mix and heat choline chloride and urea according to the molar ratio of 1:2, the heating temperature is 93°C, and the heating time is 6-8 hours to obtain the deep eutectic solvent;

[0049] Leaching: use the above-mentioned prepared deep eutectic solvent to leach the positive electrode sheet of the ternary battery that has been pretreated by the battery to obtain a metal-containing solution and an aluminum foil current collector; where the mass of the positive electrode sheet of the ternary batter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of battery recycling, and particularly relates to a process for recycling waste lithium batteries. The method comprises the steps of preparing a deep eutectic solvent, specifically, mixing and heating quaternary ammonium salt and an amine compound to obtain the deep eutectic solvent, wherein the quaternary ammonium salt is selected from one or a mixtureof more of choline chloride, choline acetate and acetylcholine, and the amine compound is selected from one or a mixture of more of urea, ethanolamine and triethanolamine; and leaching, specifically,leaching the lithium cobalt oxide positive plate by using the eutectic solvent, and disassembling the positive plate from the waste lithium battery to obtain a metal-containing solution and an aluminum foil current collector. The method has the advantages of wide raw material source, low cost, simple process steps and the like.

Description

technical field [0001] The invention relates to the technical field of battery recycling, in particular to a process for recycling waste lithium batteries. Background technique [0002] Lithium-ion batteries have important applications in many fields due to their advantages such as high energy density, long life cycle, low self-discharge energy and good safety performance. Especially with the popularization and use of various smart electronic products and new energy vehicles, lithium batteries are more widely used in these products. [0003] At present, my country has become the largest new energy vehicle market in the world. It is estimated that by 2020, the demand for lithium-ion batteries for vehicles in my country will reach 125GWh, the amount of scrapped batteries will reach 32GWh, and the converted quality of scrapped batteries will reach about 500,000 tons. It is foreseeable that , the disposal of such a large volume of waste batteries will become a thorny issue. On ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M10/54H01M10/0525
CPCH01M10/0525H01M10/54Y02E60/10Y02W30/84
Inventor 张作泰王树宾
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com