CN102051484A - Method for recycling available substances on defective cathode piece of lithium battery - Google Patents
Method for recycling available substances on defective cathode piece of lithium battery Download PDFInfo
- Publication number
- CN102051484A CN102051484A CN2010102364485A CN201010236448A CN102051484A CN 102051484 A CN102051484 A CN 102051484A CN 2010102364485 A CN2010102364485 A CN 2010102364485A CN 201010236448 A CN201010236448 A CN 201010236448A CN 102051484 A CN102051484 A CN 102051484A
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- pole piece
- lithium ion
- ion battery
- cathode pole
- inferior
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a method for recycling available substances on a defective cathode piece of a lithium ion battery, which is applied to a lithium ion battery production process and comprises the following steps of: 1, cleaning the cathode piece; 2, performing full stirring and dissolution by using purified water; 3, performing solid-liquid separation; and 4, performing re-washing, mixing a stirring fluid with a washing fluid to obtain a regeneration fluid, performing constituent supplement treatment on the regeneration fluid to obtain recyclable cathode coating slurry, and putting the slurry into production. In the method for recycling the available substances on the defective cathode piece of the lithium ion battery, a purely physical method is adopted to recycle the available substances and metal materials from defective products without producing any scrap; the recycled regeneration fluid is supplemented with various constituents, and can be directly used for the slurry coating of a pole piece of the battery when having the viscosity of normal battery slurry; the recycled metal materials, copper foils, can be sold to related factories and recycled as copper smelting raw materials; all recycled substances can be reutilized; and the method ensures simple operations and complete recycling, and can positively function in reducing the production cost of the battery, saving resources and protecting the environment.
Description
Technical field
The present invention relates to the lithium ion battery production technology, working substance recycling method on the inferior cathode pole piece of particularly a kind of lithium ion battery.
Background technology
In any production process, all can produce defect ware.The production of lithium ion battery is no exception, aborning can be even because of misoperation, crawling, part takes off reasons such as material, inaccuracy of dimensions and cause a large amount of pole pieces not satisfy specification of quality and become unacceptable product.Aborning, these unacceptable products are general, and processing can cause the certain environmental pollution and the wasting of resources like this, thereby causes the increase of lithium cell production cost all as waste disposal, and this production for persistence is very disadvantageous.
The processing of battery waste is a hang-up always, although there are a lot of treatment processs to come out, all is at a certain class battery, or complex disposal process, processing costs height.
Summary of the invention
For solving the processing of inferior cathode pole piece in the lithium ion battery production process, the invention provides a kind of working substance recycling method on the inferior cathode pole piece of lithium ion battery of carrying out in process of production.
Working substance recycling method is applied in the lithium ion battery production process on the inferior cathode pole piece of lithium ion battery of the present invention, the steps include:
1) dust on the inferior cathode pole piece of removal surface;
2) cathode pole piece is broken into fritter, adds and be equipped with in the stirred pot of pure water, stirred 1.5-2.5 hour, fully dissolve the coated substance on the pole piece, high-visible up to the pole piece matrix;
3) mixture in the stirred pot is filtered with 100-500 purpose sieve, separating liquid and solid, isolated liquid is for stirring liquid, and solid is the pole piece matrix;
4) isolated solids component is washed once more with an amount of pure water;
5) gained stirring liquid and washing fluid thorough mixing obtain regenerated liquid;
6) regenerated liquid is carried out feed supplement according to the ratio that former cathode pole piece applies the slurry each component, fully stirring makes viscosity meet the requirement of cathode pole piece coating processes, can obtain satisfactory coating slurry, puts into production once more;
7) gained pole piece matrix fragment takes care of the pence, and can be used as metallic scrap and utilizes again.
Working substance recycling method on the inferior cathode pole piece of lithium ion battery of the present invention; use pure physical method; reclaim working substance and metallic substance in the defect ware; in removal process, do not produce any waste material; the regenerated liquid of its recovery replenishes various one-tenth sub-materials; the viscosity that reaches the normal battery slurry can be directly used in the battery plate slurry; the metallic substance Copper Foil that reclaims can be sold to Copper Foil processing producer and handle utilization again; all regenerants can utilize once more; simple to operate; reclaim fully, for reducing the battery production cost; economize on resources; the protection environment can both play a positive role.
Embodiment
Below in conjunction with embodiment working substance recycling method on the inferior cathode pole piece of lithium ion battery of the present invention is done more detailed explanation.
Getting matrix is the graphite cathode pole piece 2000g of Copper Foil, and wherein the chemical substance that applies on the substrate nearly weighs 1100g, puts into stirred pot after the pulverizing, add the 4200g pure water, stirred 2 hours, thing in the jar is separated with 200 mesh sieve, isolated liquid is for stirring liquid, and solid is the pole piece matrix.
Isolated solid at the purified rinse water with 500g-1000g, is reclaimed washing fluid.
Mixing stirring liquid and washing fluid is regenerated liquid.
Mass percent according to each component in the graphite cathode pole piece slurry: graphite 95%, binding agent 5%, in regenerated liquid, replenish each component raw material, and fully stir, make the slurry viscosity reach 1500cp, promptly obtain meeting the slurry that negative pole piece of battery applies usefulness.
Isolated solid oven dry back weighing is about 1120g, and the rate of recovery promptly reached 80% at that time.
Isolating Copper Foil takes care of the pence, and can also allow relevant producer reclaim as the copper raw materials for metallurgy.
Claims (5)
1. working substance recycling method on the inferior cathode pole piece of lithium ion battery is applied in the lithium ion battery production process, the steps include:
1) dust on the inferior cathode pole piece of removal surface;
2) cathode pole piece is broken into fritter, adds and be equipped with in the stirred pot of pure water, fully stir, to dissolve on-chip coated substance, high-visible up to the pole piece matrix;
3) mixture in the stirred pot is filtered with sieve, separating liquid and solid, isolated liquid is for stirring liquid, and solid is the pole piece matrix;
4) isolated solids component is washed once more with an amount of pure water;
5) gained stirs the sharp washing fluid thorough mixing of liquid and obtains regenerated liquid;
6) regenerated liquid is carried out feed supplement according to the ratio that former cathode pole piece applies the slurry each component, fully stirring makes viscosity meet the requirement of cathode pole piece coating processes, can obtain satisfactory coating slurry.
2. working substance recycling method on the inferior cathode pole piece of lithium ion battery according to claim 1 is characterized in that: the order number of described sieve is selected the 100-500 order for use.
3. working substance recycling method on the inferior cathode pole piece of lithium ion battery according to claim 2 is characterized in that: the quality of the pure water in the described adding stirred pot should be 2-4 times of just positive tablet quality.
4. working substance recycling method on the inferior cathode pole piece of lithium ion battery according to claim 3 is characterized in that: the optimal value of described churning time is 1.5-2.5 hour.
5. working substance recycling method on the inferior cathode pole piece of lithium ion battery according to claim 4 is characterized in that: described viscosity is 1000-3000cp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102364485A CN102051484A (en) | 2010-07-22 | 2010-07-22 | Method for recycling available substances on defective cathode piece of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102364485A CN102051484A (en) | 2010-07-22 | 2010-07-22 | Method for recycling available substances on defective cathode piece of lithium battery |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010240901XA Division CN102059240A (en) | 2010-07-22 | 2010-07-22 | Method for recovering available substance on imperfect positive electrode piece of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102051484A true CN102051484A (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102364485A Pending CN102051484A (en) | 2010-07-22 | 2010-07-22 | Method for recycling available substances on defective cathode piece of lithium battery |
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| CN (1) | CN102051484A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985919A (en) * | 2014-06-05 | 2014-08-13 | 兰州理工大学 | Method for recycling graphite and copper foil from scrapped lithium ion battery negative pole piece |
| CN108565521A (en) * | 2018-04-27 | 2018-09-21 | 华南师范大学 | A kind of method directly recycling graphite cathode material |
| CN115041410A (en) * | 2022-06-27 | 2022-09-13 | 河南工学院 | Lithium battery cathode material preparation equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587974A (en) * | 2009-04-14 | 2009-11-25 | 中信国安盟固利新能源科技有限公司 | Method for processing and regenerating chemical substance on positive electrode plate and negative electrode plate of lithium ion battery |
-
2010
- 2010-07-22 CN CN2010102364485A patent/CN102051484A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587974A (en) * | 2009-04-14 | 2009-11-25 | 中信国安盟固利新能源科技有限公司 | Method for processing and regenerating chemical substance on positive electrode plate and negative electrode plate of lithium ion battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985919A (en) * | 2014-06-05 | 2014-08-13 | 兰州理工大学 | Method for recycling graphite and copper foil from scrapped lithium ion battery negative pole piece |
| CN108565521A (en) * | 2018-04-27 | 2018-09-21 | 华南师范大学 | A kind of method directly recycling graphite cathode material |
| CN115041410A (en) * | 2022-06-27 | 2022-09-13 | 河南工学院 | Lithium battery cathode material preparation equipment |
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Application publication date: 20110511 |