A processing and recycling method for waste lithium ion battery of a mobile phone

A lithium-ion battery and waste technology, which is applied in the field of recycling waste lithium-ion batteries for mobile phones, can solve problems such as resource waste, battery explosion, safety issues, etc., and achieve the effects of environmental protection, environmental protection in the processing process, and low processing costs

Inactive Publication Date: 2008-09-10
张永祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 1. It is easy to cause safety problems when recycling in large quantities
Since the surfaces of the positive and negative electrodes of scrapped lithium-ion batteries usually contain elemental lithium, and metallic lithium in an elemental state is highly flammable and explosive, for lithium-ion batteries containing elemental lithium on the surface, the lithium-ion battery in water Cutting can cause the battery to explode
[0013] 2. This method only mentions the recovery of the positive electrode of the lithium-ion battery, and does not propose a specific treatment method for other components of the lithium-ion battery, which is likely to cause waste of resources and environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 1,000 waste batteries for mobile phones. The battery cells used are 063048A aluminum case cover batteries with a single weight of 20g. Cut the batteries in an environment with a humidity of 30%, separate the winding core and the battery case cover, and then put the battery Wash the case cover with water and spin dry. A total of 2700 g of aluminum was obtained.

[0031] Disassemble the separated core from the outside to the inside. Separate the positive electrode, negative electrode, and separator. Separator is carried out pulverizing process and obtains pulverized product 510 grams

[0032] Pulverize the separated positive electrode in a pulverizer and put it into

[0033] Mass concentration is 40% NaOH solution, react until no bubbles can be seen, filter, collect the filtrate for other purposes, dry the slag at 400 degrees, then grind it into powder, pass through an 80-mesh sieve, and then Dissolve it once with lye of the same concentration and ratio, and pass...

Embodiment 2

[0036] Take 1,000 pieces of waste batteries for mobile phones. The batteries used are 063048A aluminum shell batteries with a single weight of 20g and a single weight of 20g. Cut the battery open in an environment with a humidity of 65%, and separate the winding core and the battery shell cover. Place it, and then wash and dry the battery case cover. A total of 2700 g of aluminum was obtained.

[0037] Disassemble the separated core from the outside to the inside. After placing the positive electrode, negative electrode and separator separately for 5 minutes, the negative electrode caught fire.

[0038] The test results of the above examples show that the method of the present invention can effectively process and recycle waste lithium-ion batteries in batches, so as to achieve the goals of environmental protection, resource recycling, low processing costs, and environmental protection in the processing process.

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PUM

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Abstract

The invention provides a recovery method for waste lithium-ion batteries, which is characterized in that cutting processing is carried out first to the waste lithium-ion batteries under 10 to 60 percent of relative humidity. The recovery method of waste lithium-ion batteries of the invention has the advantages of safe and simple operation and easily realizing batch processing, thereby being capable of achieving environment protection and reutilization of resources.

Description

technical field [0001] The invention relates to a recovery method of waste batteries, in particular to a recovery method of waste lithium ion batteries for mobile phones. Background technique [0002] Since Sony Corporation of Japan invented and commercialized the secondary lithium-ion battery in 1991, the lithium-ion battery has developed rapidly, its application range has been expanding day by day, and its market share has been increasing day by day. The reason is that the number of waste lithium-ion batteries used in mobile phones is increasing day by day, resulting in environmental pollution and waste of resources. In response to this phenomenon, relevant research units at home and abroad have carried out corresponding research. [0003] Japan's Sony Corporation has cooperated with Sumitomo Metal Mining Corporation to research and develop the technology of recovering cobalt from waste lithium-ion secondary batteries. Heating and dissolving in acid, then extracting cobal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54B09B3/00B09B5/00
CPCY02W30/84
Inventor 张永祥
Owner 张永祥
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