CN108079617A - Waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment - Google Patents
Waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment Download PDFInfo
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- CN108079617A CN108079617A CN201710935411.3A CN201710935411A CN108079617A CN 108079617 A CN108079617 A CN 108079617A CN 201710935411 A CN201710935411 A CN 201710935411A CN 108079617 A CN108079617 A CN 108079617A
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- carbon dioxide
- autoclave body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0203—Solvent extraction of solids with a supercritical fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- General Chemical & Material Sciences (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
A kind of waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment, including feeding, extracting and separating three processing steps, reaction kettle is changed to upper feeding bottom discharge, using hermetically sealed conveyer belt, materials basket does not feed from upper lifting during charging, waste and old lithium ion battery particle through crushing is delivered to kettle top charging by all-sealed conveyer belt, reduces the requirement to hall space height, and improves the security of production process.Extract remainder is suctioned out using negative pressure after the completion of extraction and completes discharging operations, improves production efficiency.Present invention utilizes supercritical carbon dioxides to have the advantages that high effect cleaning separation, and human body caused by avoiding the solvent residual of solvent extraction is poisoned and environmental pollution；The operation temperature and pressure condition of present invention process are mild, effectively prevent the degradation and loss of heat-sensitive substance；The rate of recovery of electrolyte of the present invention is>80%, accomplish zero organic solvent emission and high efficiency.
Description
Technical field
The present invention relates to a kind of supercritical CO 2 extraction technology and devices, are specifically a kind of the useless of upper feeding bottom discharge
Old lithium-ion battery electrolytes extraction process and device.
Background technology
Supercritical carbon dioxide extraction method is a kind of novel extraction technology to grow up after 1980, carbon dioxide with
Its identical critical condition, it is nontoxic, fire-retardant, cheap and easy to get, dissolubility is good the features such as and carrying especially suitable for heat-sensitive substance
It takes, thus leading position has been occupied in food industry, natural perfume material industry, catered to current industrialized production attaching importance to environmental protection
With the requirement of sustainable development.
Waste and old lithium ionic cell electrolyte is adsorbed in lithium ion battery plus-negative plate active material and membrane, is wrapped in electrolyte
Containing volatile carbonate-based solvent and the electrolyte lithium salt easily thermally decomposed, therefore supercritical carbon dioxide extraction method is many
Technological merit meets the separation requirement of waste and old lithium ionic cell electrolyte.
In the equipment of supercritical carbon dioxide extracting electrolyte, extraction kettle is one of most important component, work
Pressure is highest in all devices composition.Most extraction kettles is extracted material and is packed into material at work using material basket at present
In basket, material basket bottom has grid and web plate to prevent tiny material from leaking out.When extraction kettle works, material basket enters from extraction kettle upper lifting
It is interior, then arrival end is sealed, prevent carbon dioxide from passing through between material basket and extraction kettle wall.Extraction terminates and after release, opens
Material basket is hung out replacement material by sealing cover.The extraction kettle has the disadvantage that：（1）Expect basket from top lift, it is desirable that hall space compared with
Height adds investment；（2）Frequent hoisting material, production security are poor；（3）Production automation degree is low, charging, discharging ratio
It is cumbersome, reduce production efficiency；（4）Electrolyte exposure duration is long, environment and operating personnel is endangered big.
The content of the invention
It, should it is an object of the invention to provide a kind of waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology
Human body caused by technique avoids the solvent residual of solvent extraction is poisoned and environmental pollution, operation temperature and pressure condition are mild,
Effectively prevent the degradation and loss of heat-sensitive substance.
It is a further object of the present invention to provide for above-mentioned waste and old lithium ionic cell electrolyte supercritical carbon dioxide extracting
The equipment of technique.The special equipment upper feeding bottom discharge, reduces requirement of the equipment to hall space height, and improves production
The security of process, improves production efficiency.
Technical scheme includes three charging, extraction and separation processing steps：
Step 1：The discharge port of extraction kettle bottom is closed, starts all-sealed conveyer belt, by the applying waste lithium ionic containing electrolyte
Battery particle is packed into extraction kettle, closes the loading aperture at the top of extraction kettle, completes charging process；
Step 2：The carbon dioxide outlet at top is closed, opens the carbon dioxide inlet of bottom, opens extraction kettle heating unit,
Extraction kettle temperature is made to be maintained at more than carbon dioxide critical temperature and remains constant, with force (forcing) pump by carbon dioxide and solubility
Reinforcing agent is pressed into extraction kettle, and the pressure carbon dioxide in extraction kettle is made to be maintained at more than critical pressure and remains constant, opens at this time
The supercritical carbon dioxide extracting of beginning waste and old lithium ionic cell electrolyte；
The solubility enhancing agent is linear carbonate, chain alkane or chain unary alcohol；
The 5-30% weight ratios of electrolyte dosage of the dosage of the solubility enhancing agent contained by waste and old lithium ion battery；
Step 3：In extraction 10-60min, after the time, the carbon dioxide outlet at top is opened, allows the titanium dioxide for being loaded with electrolyte
Carbon flow enters separating still, is depressurized or is heated in separating still, so that carbon dioxide and electrolyte gas-liquid separation, carbon dioxide
The pressurized pump of gas flows back to storage tank, and electrolyte is enriched in separating still bottom.
For the present invention in step 2, extraction temperature scope is 31.5-52 DEG C, and extracting pressure scope is 7.3-18MPa.
The present invention in step 2, solubility enhancing agent for dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate,
One or more combinations in methanol, ethyl alcohol.
The present invention is loaded with pressure relief ranges of the carbon dioxide of electrolyte in separating still as 0.1- in step 3
7.3MPa。
The present invention in step 3, be loaded with temperature elevating range of the carbon dioxide of electrolyte in separating still for extraction temperature-
The decomposition temperature of electrolytic salt.
The present invention is loaded with 31-52 DEG C of temperature elevating range of the carbon dioxide of electrolyte in separating still in step 3.
The special equipment of the waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology of the present invention extracts autoclave body
There is heating chuck, it is loading aperture to extract at the top of the autoclave body of autoclave body, is equipped with upper cover at loading aperture, the top for extracting autoclave body has
Carbon dioxide outlet, extraction autoclave body have vertebra shape autoclave body bottom, extract and sieve plate stent and sieve plate are housed between autoclave body and autoclave body bottom,
Autoclave body bottom is equipped with carbon dioxide inlet, and autoclave body bottom lower end is discharge port, and discharge outlet is equipped with low head, low head and autoclave body
Bottom junctions are additionally provided with low head fixture, and low head is through cylinder loaded in guide sleeve and on air cylinder support；It is hermetically sealed
Formula conveyer belt is correspondingly arranged with loading aperture.
Autoclave body bottom discharge port internal diameter of the present invention is 0.4-0.8 with autoclave body internal diameter ratio:1；At the top of the autoclave body
Loading aperture internal diameter is 0.3-0.9 with autoclave body internal diameter ratio:1.
In step 3, extraction time 10-60min, it is therefore an objective to supercritical carbon dioxide be made to be spread in extraction kettle, filled
Point and electrolyte contacts, and dissolve electrolyte, can be according to specific dissolving situation adjustment.
Waste and old lithium ion battery of the present invention from shape can be button cell, cylindrical battery and rectangular cell,
It can be aluminum-shell battery, box hat battery and soft-package battery to divide from packaging material, and it can be cobalt acid lithium electricity to divide from positive electrode
One or several kinds in pond, lithium manganate battery, nickel cobalt manganese/aluminic acid lithium battery and ferric phosphate lithium cell.
The present invention is in step 1, and for the waste and old lithium ion battery particle grain size between 1-5cm, particle includes battery
The material of electrolyte is adsorbed/be stained with to the one or more such as shell, membrane, collector, positive and negative anodes active material, lug and insulating tape
Material.
For the present invention in step 1, the organic solvent main component of the waste and old lithium ionic cell electrolyte is ethylene carbonate
Ester (EC), ethyl propyl carbonic acid ester (EPC), diethyl carbonate (DEC), methyl propyl carbonate (MPC), propene carbonate (PC), carbonic acid two
Methyl esters (DMC), methyl ethyl carbonate (EMC).
Functional additive main component in waste and old lithium ionic cell electrolyte of the present invention is tetraethoxysilane
(TEOS), vinylene carbonate (VC), biphenyl (BP), dimethyl sulfoxide (DMSO) (DMSO), dimethoxymethane（DMM）.
The electrolytic salt of waste and old lithium ionic cell electrolyte of the present invention is LiPF6、LiBF4、LiClO4、LiAsF6、
LiBOB、LiN(SO2F)2、LiC2O4BC2O4。
Present invention utilizes supercritical carbon dioxides to have the advantages that high effect cleaning separation, avoids the solvent of solvent extraction
Human body caused by residual is poisoned and environmental pollution；The operation temperature and pressure condition of present invention process are mild, effectively prevent temperature-sensitive
The degradation and loss of property substance；The rate of recovery of electrolyte of the present invention is>80%, accomplish zero organic solvent emission and high efficiency.
The supercritical carbon dioxide extraction equipment of above-mentioned upper feeding bottom discharge provided by the invention, as a result of hermetically sealed
Conveyer belt designs, and materials basket is not from upper lifting charging during charging, and the waste and old lithium ion battery particle through crushing is by all-sealed defeated
Band is sent to be delivered to kettle top charging, the requirement to hall space height is reduced, and improves the security of production process.It has extracted
Discharging operations are completed into rear suction out extract remainder using negative pressure, improve production efficiency.The extraction kettle is suitable for more open
Material kind is particularly suitable for electrolyte in lithium ion battery material fragment and extracts.
Description of the drawings
Attached drawing Fig. 1 is the special equipment structure diagram of the present invention.
In figure：The all-sealed conveyer belts of 1-；2- extracts autoclave body；At the top of 3- autoclave bodies；4- autoclave body bottoms；5- carbon dioxide goes out
Mouthful；6- upper covers；7- low heads；8- sieve plates；9- cylinders；11- guide sleeves；12- carbon dioxide inlets.
Specific embodiment
Technical solution of the present invention is not limited to the specific embodiment of act set forth below, further include each specific embodiment it
Between any combination.
In attached drawing, extraction autoclave body 2 has a heating chuck, and it is loading aperture to extract at the top of the autoclave body of autoclave body 23, at loading aperture
Equipped with upper cover 6, carbon dioxide outlet 5 is arranged at the top of extraction autoclave body 2, and extraction autoclave body 2 has vertebra shape autoclave body bottom 4, extracts autoclave body 2
Equipped with sieve plate stent and sieve plate 8 between autoclave body bottom 4, vertebra shape autoclave body bottom 4 is equipped with carbon dioxide inlet 12, carbon dioxide into
Mouth 12 is corresponding with the region for placing sieve plate stent, and 4 lower end of vertebra shape autoclave body bottom is discharge port, and discharge outlet is equipped with low head 7,
Low head 7 is additionally provided with low head fixture with 4 junction of autoclave body bottom, and low head 7 is loaded in guide sleeve 11 and is mounted on through cylinder 9
On air cylinder support；All-sealed conveyer belt 1 is correspondingly arranged with loading aperture.It is another to be unloaded equipped with what be locked with autoclave body bottom discharge port
Expect hose.Autoclave body bottom discharge port internal diameter is 0.5 with extraction kettle body internal diameter ratio:1；At the top of autoclave body 3 loading aperture internal diameter with
Extraction kettle body internal diameter ratio is 0.7:1.
Embodiment 1
First, the discharge port of extraction kettle bottom is closed, 3 end socket 6 at the top of autoclave body is opened, starts all-sealed conveyer belt 1, will contain
There is the waste and old lithium ion battery comminuting matter of electrolyte, be packed into extraction kettle, closing at the top of autoclave body 3 upper sealing 6 makes extraction kettle
The loading aperture closing at top, completes charging process.Waste and old lithium ion battery particle containing electrolyte is cobalt acid lithium battery.
2nd, close the carbon dioxide outlet at top, open the carbon dioxide inlet of bottom, with force (forcing) pump by carbon dioxide from
The carbon dioxide inlet 12 of autoclave body bottom 4 is pressed into extraction kettle, then with force (forcing) pump by solubility enhancing agent ethyl alcohol ester from autoclave body bottom 4
Carbon dioxide inlet 12 be pressed into extraction kettle, and the pressure carbon dioxide in extraction kettle is made to be maintained at more than critical pressure 7.3MPa
It remains constant, opens extraction kettle heating unit, extraction kettle temperature is made to be maintained at 31.5 DEG C of carbon dioxide critical or more and is maintained
It is constant, start the supercritical carbon dioxide extracting of waste and old lithium ionic cell electrolyte, 31.5 DEG C of extraction temperature, extracting pressure at this time
7.5MPa, the dosage of the ethyl alcohol are 5% weight ratio of the electrolyte dosage contained by waste and old lithium ion battery；
3rd, in extraction time after ten minutes, the carbon dioxide outlet at top is opened, the carbon dioxide for being loaded with electrolyte is allowed to flow into and is divided
It from kettle, is depressurized or is heated in separating still, so that carbon dioxide and electrolyte gas-liquid separation, carbon dioxide is through adding
Press pump flows back to storage tank, and electrolyte is enriched in separating still bottom；Low head 7 is opened, starts cylinder 9, piston moves down, and opens low head
7, low head 7 and cylinder 9 are removed, discharging hose with the discharge port of autoclave body bottom 4 is connected, is suctioned out extract remainder using negative pressure,
Complete discharging.The rate of recovery of electrolyte is 83.2wt% at this time.
Embodiment 2
First, the discharge port of extraction kettle bottom is closed, LiPF will be contained6/（DMC+EC+DEC+VC+BP）The waste and old NCM tri- of electrolyte
First lithium ion battery particle is packed into extraction kettle, closes the loading aperture at the top of extraction kettle, completes charging process.
2nd, the carbon dioxide outlet at top is closed, opens the carbon dioxide inlet of bottom, opens extraction kettle heating unit,
Extraction kettle temperature is made to be maintained at 40 DEG C or more and remains constant, with force (forcing) pump by carbon dioxide and solubility enhancing agent propane pressure
Enter extraction kettle, and the pressure carbon dioxide in extraction kettle is made to be maintained at 10MPa and remains constant, start waste and old lithium ion battery at this time
The supercritical carbon dioxide extracting of electrolyte, the dosage of the solubility enhancing agent propane are the electricity contained by waste and old lithium ion battery
Solve 15% weight ratio of liquid dosage.
3rd, after extraction time 30min is reached, the carbon dioxide outlet at top is opened, allows the titanium dioxide for being loaded with electrolyte
Carbon flow enters separating still, and 0.5MPa is decompressed in separating still, so that carbon dioxide and electrolyte gas-liquid separation, carbon dioxide gas
The pressurized pump of body flows back to storage tank, and electrolyte is enriched in separating still bottom, and the rate of recovery of electrolyte is 81.2wt% at this time.
Discharging hose with 4 discharge port of autoclave body bottom is connected, is suctioned out extract remainder using negative pressure, completes discharging.
Embodiment 3
First, the discharge port of extraction kettle bottom is closed, LiPF will be contained6/（DMC+EC+VC）The waste lithium iron phosphate battery of electrolyte
Particle is packed into extraction kettle, closes the loading aperture at the top of extraction kettle, completes charging process.
2nd, the carbon dioxide outlet at top is closed, opens the carbon dioxide inlet of bottom, opens extraction kettle heating unit,
Extraction kettle temperature is made to be maintained at 50 DEG C and remains constant, with force (forcing) pump by carbon dioxide and solubility enhancing agent carbovinate
Ester is pressed into extraction kettle, and the pressure carbon dioxide in extraction kettle is made to be maintained at 17MPa and remains constant, starts applying waste lithium ionic at this time
The supercritical carbon dioxide extracting of battery electrolyte.The dosage of the solubility enhancing agent diethyl carbonate is applying waste lithium ionic
30% weight ratio of the electrolyte dosage contained by battery.
3rd, after extraction time 60min is reached, the carbon dioxide outlet at top is opened, allows the titanium dioxide for being loaded with electrolyte
Carbon flow enters separating still, and 0.3MPa is decompressed in separating still, so that carbon dioxide and electrolyte gas-liquid separation, carbon dioxide gas
The pressurized pump of body flows back to storage tank, and electrolyte is enriched in separating still bottom, and the rate of recovery of electrolyte is 86.2wt% at this time.
Discharging hose with 4 discharge port of autoclave body bottom is connected, is suctioned out extract remainder using negative pressure, completes discharging.
Claims (6)
1. a kind of waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology, it is characterised in that：
Step 1：The discharge port of extraction kettle bottom is closed, the waste and old lithium ion battery particle containing electrolyte is packed into extraction kettle
It is interior, the loading aperture at the top of extraction kettle is closed, completes charging process；
Step 2：The carbon dioxide outlet at top is closed, opens the carbon dioxide inlet of bottom, opens extraction kettle heating unit,
Extraction kettle temperature is made to be maintained at more than carbon dioxide critical temperature and remains constant, with force (forcing) pump by carbon dioxide and solubility
Reinforcing agent is pressed into extraction kettle, and the pressure carbon dioxide in extraction kettle is made to be maintained at more than critical pressure and remains constant, opens at this time
The supercritical carbon dioxide extracting of beginning waste and old lithium ionic cell electrolyte；
The solubility enhancing agent is linear carbonate, chain alkane or chain unary alcohol；
The 5-30% weight ratios of electrolyte dosage of the dosage of the solubility enhancing agent contained by waste and old lithium ion battery；
Step 3：In extraction 10-60min, after the time, the carbon dioxide outlet at top is opened, allows the titanium dioxide for being loaded with electrolyte
Carbon flow enters separating still, is depressurized or is heated in separating still, so that carbon dioxide and electrolyte gas-liquid separation, carbon dioxide
The pressurized pump of gas flows back to storage tank, and electrolyte is enriched in separating still bottom.
2. waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology according to claim 1, feature exist
In：In step 2, extraction temperature scope is 31-52 DEG C, and extracting pressure scope is 7.3-18MPa.
3. waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology according to claim 1, feature exist
In：In step 2, solubility enhancing agent is dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, ethane, propane, fourth
One or more combinations in alkane, methanol, ethyl alcohol.
4. waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology according to claim 1, feature exist
In：In step 3, pressure relief ranges of the carbon dioxide of electrolyte in separating still are loaded with as 0.1-7.3MPa.
5. a kind of equipment of waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology described in claim 1,
It is characterized in that：Extract autoclave body（2）There is heating chuck, extract autoclave body（2）Autoclave body at the top of（3）For loading aperture, at loading aperture
Equipped with upper cover（6）, extract autoclave body（2）Top have carbon dioxide outlet（5）, extract autoclave body（2）There is vertebra shape autoclave body bottom
（4）, extract autoclave body（2）With autoclave body bottom（4）Between be equipped with sieve plate stent and sieve plate（8）, autoclave body bottom（4）Equipped with carbon dioxide
Import（12）, autoclave body bottom（4）Lower end is discharge port, and discharge outlet is equipped with low head（7）, low head（7）With autoclave body bottom（4）
Junction is additionally provided with low head fixture, low head（7）Through cylinder（9）Loaded on guide sleeve（11）In and on the air cylinder support；
All-sealed conveyer belt（1）It is correspondingly arranged with loading aperture.
6. the equipment of waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology according to claim 5,
It is characterized in that：The autoclave body bottom discharge port internal diameter is 0.4-0.8 with autoclave body internal diameter ratio:1；The autoclave body top loading is opened
Mouth internal diameter is 0.3-0.9 with autoclave body internal diameter ratio:1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935411.3A CN108079617A (en) | 2017-10-10 | 2017-10-10 | Waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710935411.3A CN108079617A (en) | 2017-10-10 | 2017-10-10 | Waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment |
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| CN108079617A true CN108079617A (en) | 2018-05-29 |
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| CN201710935411.3A Pending CN108079617A (en) | 2017-10-10 | 2017-10-10 | Waste and old lithium ionic cell electrolyte supercritical CO 2 extraction technology and equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808177A (en) * | 2018-06-14 | 2018-11-13 | 北京理工大学 | A kind of ionic liquid-supercritical carbon dioxide mixed electrolyte, preparation and battery |
| CN109037828A (en) * | 2018-06-21 | 2018-12-18 | 广东乾能科技股份有限公司 | The recovery and treatment method of electrolyte in a kind of waste and old lithium ion battery material |
| CN109888423A (en) * | 2019-02-25 | 2019-06-14 | 上海毅信环保科技有限公司 | A kind of recovery method for scrapping ternary lithium battery |
| CN110534835A (en) * | 2019-09-17 | 2019-12-03 | 常州大学 | Supercritical CO2The method of fluid recovery waste and old lithium ionic cell electrolyte |
| CN111392706A (en) * | 2020-03-23 | 2020-07-10 | 广东光华科技股份有限公司 | Method for recycling waste lithium iron phosphate anode material |
| CN111416169A (en) * | 2020-03-11 | 2020-07-14 | 长沙有色冶金设计研究院有限公司 | Device for charged crushing and electrolyte recovery of waste power lithium battery |
| CN114388995A (en) * | 2021-12-29 | 2022-04-22 | 深圳赛骄阳能源科技股份有限公司 | Carbon dioxide supercritical cleaning method for cylindrical lithium ion battery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808177A (en) * | 2018-06-14 | 2018-11-13 | 北京理工大学 | A kind of ionic liquid-supercritical carbon dioxide mixed electrolyte, preparation and battery |
| CN108808177B (en) * | 2018-06-14 | 2020-11-13 | 北京理工大学 | Ionic liquid-supercritical carbon dioxide mixed electrolyte, preparation and battery |
| CN109037828A (en) * | 2018-06-21 | 2018-12-18 | 广东乾能科技股份有限公司 | The recovery and treatment method of electrolyte in a kind of waste and old lithium ion battery material |
| CN109888423A (en) * | 2019-02-25 | 2019-06-14 | 上海毅信环保科技有限公司 | A kind of recovery method for scrapping ternary lithium battery |
| CN110534835A (en) * | 2019-09-17 | 2019-12-03 | 常州大学 | Supercritical CO2The method of fluid recovery waste and old lithium ionic cell electrolyte |
| CN110534835B (en) * | 2019-09-17 | 2022-04-22 | 常州大学 | Supercritical CO2Method for recovering waste lithium ion battery electrolyte by using fluid |
| CN111416169A (en) * | 2020-03-11 | 2020-07-14 | 长沙有色冶金设计研究院有限公司 | Device for charged crushing and electrolyte recovery of waste power lithium battery |
| CN111392706A (en) * | 2020-03-23 | 2020-07-10 | 广东光华科技股份有限公司 | Method for recycling waste lithium iron phosphate anode material |
| CN111392706B (en) * | 2020-03-23 | 2021-11-23 | 广东光华科技股份有限公司 | Method for recycling waste lithium iron phosphate anode material |
| CN114388995A (en) * | 2021-12-29 | 2022-04-22 | 深圳赛骄阳能源科技股份有限公司 | Carbon dioxide supercritical cleaning method for cylindrical lithium ion battery |
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Application publication date: 20180529 |