A method for recovering and reusing waste lithium ion battery

A lithium-ion battery, waste technology, applied in the direction of battery recycling, recycling technology, waste collector recycling, etc., can solve the problems of complicated recycling process, no further innovative use of electrode materials, increased cost of chloride salt, etc. Achieve the effect of simple operation, promoting further application and avoiding the cost of medicine

Inactive Publication Date: 2019-01-18
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The recovery process of this patent is complicated, and involves the use of chloride salt reagents and multiple high-temperature calcinations, and the high-temperature...

Method used

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  • A method for recovering and reusing waste lithium ion battery
  • A method for recovering and reusing waste lithium ion battery
  • A method for recovering and reusing waste lithium ion battery

Examples

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Embodiment 1

[0026] A method for recycling waste lithium-ion batteries, specifically comprising the steps of:

[0027] (1) Put the waste lithium battery in a closed box, disassemble it manually, classify the disassembled materials according to the material, and collect the positive electrode sheet, mainly lithium manganate.

[0028] (2) The collected positive electrode sheet was first soaked in deionized water with a solid-to-liquid ratio of 200 g / L for 30 minutes, and the leachate was collected, and then the positive electrode sheet was washed 3 times with absolute ethanol.

[0029] (3) The cleaned positive electrode sheet was vacuum-dried at a temperature of 60° C. for 12 hours to obtain an active lithium manganate positive electrode sheet.

[0030] (4) Take a piece of active lithium manganate positive electrode sheet with a diameter of 1.4cm, add it to a volume of 100ml of o-phenylphenol solution with a pH of 7 and a concentration of 20ppm, and then add 30mg of potassium hydrogen persul...

Embodiment 2

[0035] The active lithium manganate positive plate mainly based on lithium manganate obtained in the examples is used as a heterogeneous catalyst for the catalytic oxidation reaction of advanced oxidation technology based on sulfate radicals to degrade o-phenylphenol wastewater. The specific process as follows:

[0036] Get 100ml concentration and be the ortho-phenylphenol waste water of 20ppm in the beaker of 100ml, add the potassium hydrogen persulfate complex salt of 30mg, then add the positive plate catalyst of a piece of diameter 1.4cm, catalyzer is fixed with perforation in the middle of iron wire. The pH of the solution was adjusted to neutral with 185 mg of disodium hydrogen phosphate and 152 mg of sodium dihydrogen phosphate. Place the beaker bottle on a magnetic stirrer for stirring reaction, take the addition of oxidant as the zero point of the timing, take a sample every once in a while, immediately add an equal volume of methanol to quench, filter with a 0.22um fi...

Embodiment 3

[0042] A method for recycling waste lithium batteries, the following steps are adopted:

[0043] (1) Disassemble the waste lithium-ion battery in an airtight box to obtain an active positive electrode, mainly lithium cobaltate;

[0044] (2) The collected positive electrode sheet is first soaked in deionized water with a solid-to-liquid ratio of 200g / L for 15 minutes, and the leachate is collected, and then the positive electrode sheet is washed 3 times with absolute ethanol;

[0045] (3) Vacuum drying the cleaned positive electrode sheet at a temperature of 60° C. for 12 hours to obtain an active lithium cobaltate positive electrode sheet mainly composed of lithium cobalt oxide;

[0046] (4) Take a piece of active lithium cobaltate positive electrode sheet with a diameter of 1.4cm, add it to 100ml of rhodamine B solution with a pH of 7 and a concentration of 20ppm, and then add 20mg of potassium persulfate compound salt to realize the rhodamine Catalytic degradation of B.

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Abstract

The invention relates to a method for recovering and reusing waste lithium ion batteries, comprising the following steps: (1) placing the waste lithium ion batteries in an airtight box for disassembling to obtain an active positive electrode sheet; 2, collectING that active positive electrode sheet, and cleaning the active positive electrode sheet with deionize water and ethanol; (3) drying and recycling the washed materials; (4) at room temperature, adding appropriate amount of dried material into o-phenylphenol solution, and then adding a certain amount of potassium persulfate complex salt to generate SO4-. to oxidize and degrade o-phenylphenol. Compared with the prior art, the invention has the advantages of short aging time and simple operation, on the one hand, the problem of environmental pollution caused by waste lithium ion battery and secondary pollution caused by metal extraction is solved; On the other hand, it is used in the treatment of refractory sewage, which saves the cost of treatment and creates environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of waste lithium ion battery treatment, and relates to a method for recycling waste lithium ion batteries. Background technique [0002] With the development of manufacturing technology and information technology, portable micro appliances, various household appliances and new energy electric vehicles have become an indispensable part of contemporary human life. Lithium batteries play an irreplaceable role in meeting human mobility and portable power supply needs. With the progress of the social economy and the improvement of the quality of human life, the use of lithium batteries will gradually increase. In 2005, the world's lithium-ion battery output was 2.05 billion, and by 2012 it would reach 5.86 billion; thanks to the development of new energy vehicles, it is estimated that by 2020, the lithium-ion battery industry will reach an output value of 32 billion US dollars. And the ensuing consequence is th...

Claims

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Application Information

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IPC IPC(8): H01M6/52H01M10/54
CPCH01M6/52H01M10/54Y02W30/84
Inventor 时鹏辉王旭杨玲霞贺文轩范金辰闵宇霖徐群杰
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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