CN114865134A - Method for efficiently recycling electrolyte of waste lithium ion battery - Google Patents
Method for efficiently recycling electrolyte of waste lithium ion battery Download PDFInfo
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- CN114865134A CN114865134A CN202210608686.7A CN202210608686A CN114865134A CN 114865134 A CN114865134 A CN 114865134A CN 202210608686 A CN202210608686 A CN 202210608686A CN 114865134 A CN114865134 A CN 114865134A
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- electrolyte
- salt solution
- dimethyl carbonate
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- lithium ion
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 24
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- 238000004064 recycling Methods 0.000 title description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 30
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005406 washing Methods 0.000 claims abstract description 20
- 239000012266 salt solution Substances 0.000 claims abstract description 19
- 239000012071 phase Substances 0.000 claims abstract description 17
- 239000000047 product Substances 0.000 claims abstract description 11
- 239000012074 organic phase Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 8
- 238000004821 distillation Methods 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 7
- 235000002639 sodium chloride Nutrition 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 235000011151 potassium sulphates Nutrition 0.000 claims description 3
- 239000008346 aqueous phase Substances 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 abstract description 13
- 150000001768 cations Chemical class 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 239000012043 crude product Substances 0.000 abstract 2
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 239000012634 fragment Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910003002 lithium salt Inorganic materials 0.000 description 3
- 159000000002 lithium salts Chemical class 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 lithium hexafluorophosphate Chemical compound 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
Images
Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for efficiently recovering electrolyte of a waste lithium ion battery, which comprises the steps of crushing the waste lithium ion battery to obtain a crushed material with the electrolyte, washing the crushed material in a salt solution, carrying out solid-liquid separation after washing to obtain a filtrate, standing and layering the filtrate to obtain a water phase and an organic phase, mixing the organic phase with methanol, and distilling a dimethyl carbonate crude product under the conditions that the temperature is 60-100 ℃ and the vacuum degree is 10-80 kPa. The method utilizes the salt solution to wash, solute which does not react with the electrolyte is dissolved in the salt solution, so that the density of the water phase is increased, the electrolyte and the water phase can float on the water phase in a layered manner, the electrolyte and the water phase are separated, part of metal cations in partial salt enter an organic phase in the washing process of the salt solution, the carbonic ester and the methanol generate ester exchange reaction under the catalysis of the metal cations to generate the dimethyl carbonate, the temperature is controlled to evaporate out a dimethyl carbonate crude product, and the distilled carbonic ester product has high purity and can be sold in the market.
Description
Technical Field
The invention belongs to the technical field of battery material recycling, and particularly relates to a method for efficiently recycling electrolyte of a waste lithium ion battery.
Background
The electrolyte in the lithium ion battery accounts for about 17% of the total weight of the battery, and is generally prepared from carbonate organic solvents such as Ethylene Carbonate (EC), dimethyl carbonate (DMC), Ethyl Methyl Carbonate (EMC), Propylene Carbonate (PC), and lithium hexafluorophosphate (LiPF), an electrolyte lithium salt 6 ) And additives, part of lithium ions in the lithium ion battery can be transferred into the electrolyte in the using process, the lithium content in the electrolyte of the waste lithium ion battery can reach 7-14g/L, and the lithium ion battery has higher recovery value.
The biggest problem of lithium ion electrolyte recovery at present is: 1. electrolyte collection problem: electrolyte in the lithium ion battery is distributed between the positive and negative pole pieces and the diaphragm, when the electrolyte is poured out of the battery, most of the electrolyte is between the pole pieces and the diaphragm, and the electrolyte which can be directly poured out of the battery is little. 2. Carbonate recovery problems: the carbonic ester products obtained by direct vacuum distillation are reported in the literature at present, but the carbonic ester products obtained by vacuum distillation are not single carbonic ester but contain a mixture of several carbonic esters, are difficult to reuse and are difficult to sell in the market.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides a method for efficiently recycling the electrolyte of the waste lithium ion battery, which can economically and efficiently collect the electrolyte, and the distilled carbonate product has high purity.
According to one aspect of the invention, a method for efficiently recycling electrolyte of a waste lithium ion battery is provided, which comprises the following steps:
s1: crushing the waste lithium ion battery to obtain a crushed material with an electrolyte, placing the crushed material in a salt solution for washing, and performing solid-liquid separation after washing to obtain a filtrate;
s2: standing and layering the filtrate to obtain a water phase and an organic phase;
s3: mixing the organic phase with methanol, and distilling out the crude dimethyl carbonate product under the conditions of temperature of 60-100 ℃ and vacuum degree of 10-80 kPa.
In some embodiments of the invention, in step S1, the electrolyte comprises the following components: 1-2mol/L of lithium salt, 40-60 v% of dimethyl carbonate, 5-25 v% of methyl ethyl carbonate, 10-25 v% of ethylene carbonate and 0-10 v% of propylene carbonate. The lithium salt is lithium hexafluorophosphate.
In some embodiments of the invention, in step S1, the salt solution is a neutral salt solution. Further, the salt in the salt solution is selected from one or more of sodium chloride, sodium sulfate, potassium chloride or potassium sulfate.
In some embodiments of the present invention, in step S1, the mass concentration of the salt solution is 5 to 25%, and the liquid-solid ratio of the salt solution to the crushed material is (2 to 8): 1L/kg.
In some embodiments of the invention, in step S1, the washing is performed at a stirring speed of 60-400 r/min.
In some embodiments of the invention, in step S1, the washing time is 5-30 min.
In some embodiments of the invention, in step S2, the aqueous phase is returned to step S1 for the washing.
In some embodiments of the invention, in step S2, the standing time for layering is 0.5-3 h.
In some embodiments of the invention, in step S3, the volume ratio of the organic phase to methanol is 1: (0.2-1).
In some embodiments of the present invention, in step S3, the raw dimethyl carbonate is subjected to freezing crystallization, and the obtained crystals of dimethyl carbonate are heated and melted to obtain pure dimethyl carbonate. Further, the temperature of the frozen crystal is-5-3 ℃.
In some embodiments of the present invention, in step S3, the temperature is raised to 55-80 ℃ under normal pressure for 1-3h before the distillation.
In some embodiments of the present invention, in step S3, the residue after distillation is subjected to the next lithium extraction process. The residual liquid after distillation can be further separated and purified by a rectification method to obtain byproducts such as ethylene glycol, propylene glycol and the like.
According to a preferred embodiment of the present invention, at least the following advantages are provided:
the main component of the electrolyte in the lithium ion battery is carbonic ester, the carbonic ester is insoluble in water, the density of the carbonic ester is close to the density of water, the carbonic ester is not dissolved in water or separated from water when being mixed with water, and small liquid drops are formed in the water and are difficult to separate from the water. The invention utilizes salt solution with certain concentration to wash, solute which does not react with electrolyte is dissolved in the salt solution, so that the density of the water phase is increased, the density of the electrolyte is lower than that of the water phase, the electrolyte can be layered with the water phase and float on the water phase, and the layering of the electrolyte and the water is realized; meanwhile, in the washing process of the salt solution, part of metal cations in part of salt enter an organic phase, and the carbonic ester and the methanol generate ester exchange reaction to generate dimethyl carbonate under the catalytic action of the metal cations, wherein the part of the reaction formula is as follows: (CH) 2 O) 2 CO (ethylene carbonate) +2CH 3 OH→(CH 3 O) 2 CO+HOCH 2 CH 2 OH、C 4 H 6 O 3 (propylene carbonate) +2CH 3 OH→(CH 3 O) 2 CO+CH 3 CHOHCH 2 OH, the boiling points of the generated ethylene glycol, propylene glycol and other carbonates are higher than 100 ℃, and the boiling point of the dimethyl carbonate is only 90 ℃, so that the crude dimethyl carbonate product can be steamed at a controllable temperature, and the dimethyl carbonate can be purified by a freezing crystallization method. The method can economically and efficiently collect the electrolyte, and the distilled carbonate product has high purity and can be sold in the market.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Example 1
A method for efficiently recycling electrolyte of a waste lithium ion battery refers to FIG. 1, and the specific process is as follows:
taking 5kg of waste ternary lithium battery, crushing the waste ternary lithium battery by using a crusher after discharging the power, releasing the electrolyte in the lithium ion battery, adding 20L of sodium sulfate salt water with the concentration of 10% into the crushed battery fragments with the electrolyte, stirring and washing the battery fragments at normal temperature for 10min, fishing out coarse battery fragments by using a coarse strainer after washing, removing fine slag by suction filtration, standing the filtered solution in a separating barrel for 0.5h, separating out a water phase and the electrolyte, returning the water phase to the previous step to clean the battery fragments, separating and collecting 600mL of the electrolyte, adding 200mL of methanol into the collected electrolyte, heating the solution to 60 ℃ at normal pressure in a rotary evaporator for reaction for 2h, distilling the solution for 1h under the conditions of vacuum degree of 30kPa and distillation temperature of 80 ℃ to obtain 500mL of distillate, feeding the distilled residual liquid into the next lithium extraction process, freezing the distillate in an ice box for 1h under the condition of 0 ℃, centrifugally filtering under the condition of freezing at 0 ℃ to obtain dimethyl carbonate crystals, placing the dimethyl carbonate crystal in room temperature to melt to obtain 400mL of dimethyl carbonate product, and detecting the purity of the dimethyl carbonate by GC-MS to be 99%.
Example 2
A method for efficiently recovering electrolyte of a waste lithium ion battery comprises the following specific processes:
taking 5kg of waste ternary lithium battery, crushing the waste ternary lithium battery by using a crusher after discharging the power, releasing the electrolyte in the lithium ion battery, adding the crushed battery fragments with the electrolyte into 15L of sodium chloride brine with the concentration of 15%, stirring and washing the battery fragments for 20min at normal temperature, fishing out coarse battery fragments by using a coarse filter screen after washing, removing fine slag by suction filtration, standing the filtered solution in a separating barrel for 1h, separating out a water phase and the electrolyte, returning the water phase to the previous step to clean the battery fragments, separating and collecting 540mL of the electrolyte, adding 150mL of methanol into the collected electrolyte, heating the solution to 60 ℃ at normal pressure in a rotary evaporator to react for 2h, distilling the solution for 1h under the conditions of vacuum degree of 40kPa and distillation temperature of 80 ℃ to obtain 420mL of distillate, feeding the distillation residue into the next lithium extraction process, freezing the distillate in an ice box for 1h under the condition of 0 ℃, and centrifuging and filtering the distillation under the condition of 0 ℃ to obtain dimethyl carbonate, the dimethyl carbonate crystal is placed at room temperature to be melted to obtain 340mL of dimethyl carbonate product, and the purity of the dimethyl carbonate is 99 percent by GC-MS detection.
Example 3
A method for efficiently recovering electrolyte of a waste lithium ion battery comprises the following specific processes:
taking 5kg of waste ternary lithium battery, crushing the battery by using a crusher after discharging the battery to release the electrolyte in the lithium ion battery, adding 25L of potassium sulfate saline with the concentration of 20% into the crushed battery fragments with the electrolyte, stirring and washing the battery fragments for 20min at normal temperature, fishing out coarse battery fragments by using a coarse filter screen after washing, removing fine slag by suction filtration, standing the filtered solution in a separating barrel for 0.5h, separating out a water phase and the electrolyte, returning the water phase to the previous step to clean the battery fragments, separating and collecting 620mL of electrolyte, adding 200mL of methanol into the collected electrolyte, heating the solution to 60 ℃ at normal pressure in a rotary evaporator to react for 2h, distilling the solution for 1h under the conditions of 20kPa vacuum degree and 80 ℃ to obtain 540mL of distillate, feeding the distilled residual liquid into the next lithium extraction process, freezing the distillate in an ice box for 1h under the condition of 0 ℃, centrifugally filtering the distillate under the condition of 0 ℃ to obtain dimethyl carbonate crystals, the dimethyl carbonate crystal is placed at room temperature to be melted to obtain 420mL of dimethyl carbonate product, and the purity of the dimethyl carbonate is 99 percent by GC-MS detection.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control. When "mass, concentration, temperature, time, or other value or parameter is expressed as a range, preferred range, or as a range defined by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, a range of 1 to 50 should be understood to include any number, combination of numbers, or subrange selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, and all fractional values between the above integers, e.g., 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to sub-ranges, specifically consider "nested sub-ranges" that extend from any endpoint within the range. For example, nested sub-ranges of exemplary ranges 1-50 may include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in another direction. ".
Claims (10)
1. A method for efficiently recovering electrolyte of a waste lithium ion battery is characterized by comprising the following steps:
s1: crushing the waste lithium ion battery to obtain a crushed material with an electrolyte, placing the crushed material in a salt solution for washing, and performing solid-liquid separation after washing to obtain a filtrate;
s2: standing and layering the filtrate to obtain a water phase and an organic phase;
s3: mixing the organic phase with methanol, and distilling to obtain crude dimethyl carbonate product at 60-100 deg.C and 10-80 kPa.
2. The method according to claim 1, wherein in step S1, the salt solution is a neutral salt solution; the salt in the salt solution is selected from one or more of sodium chloride, sodium sulfate, potassium chloride or potassium sulfate.
3. The method as claimed in claim 1, wherein in step S1, the salt solution has a mass concentration of 5-25%, and the liquid-solid ratio of the salt solution to the crushed material is (2-8): 1L/kg.
4. The method according to claim 1, wherein the washing is performed at a stirring speed of 60-400r/min in step S1.
5. The method as claimed in claim 1, wherein the washing time is 5-30min in step S1.
6. The method of claim 1, wherein in step S2, the aqueous phase is returned to step S1 for said washing.
7. The method of claim 1, wherein in step S2, the standing time for layering is 0.5-3 h.
8. The method of claim 1, wherein in step S3, the volume ratio of the organic phase to the methanol is 1: (0.2-1).
9. The method of claim 1, wherein in step S3, the raw dimethyl carbonate is subjected to freezing crystallization, and the obtained crystals of dimethyl carbonate are heated to melt to obtain pure dimethyl carbonate.
10. The method of claim 1, wherein in step S3, the residue after distillation is subjected to a next lithium extraction process.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608686.7A CN114865134A (en) | 2022-05-31 | 2022-05-31 | Method for efficiently recycling electrolyte of waste lithium ion battery |
| DE112023000108.1T DE112023000108T5 (en) | 2022-05-31 | 2023-03-15 | Process for efficient recovery of waste lithium-ion battery electrolyte |
| PCT/CN2023/081684 WO2023231508A1 (en) | 2022-05-31 | 2023-03-15 | Method for efficiently recovering electrolyte of spent lithium-ion battery |
| GB2318911.1A GB2622974A (en) | 2022-05-31 | 2023-03-15 | Method for efficiently recovering electrolyte of spent lithium-ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210608686.7A CN114865134A (en) | 2022-05-31 | 2022-05-31 | Method for efficiently recycling electrolyte of waste lithium ion battery |
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| CN114865134A true CN114865134A (en) | 2022-08-05 |
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| Country | Link |
|---|---|
| CN (1) | CN114865134A (en) |
| DE (1) | DE112023000108T5 (en) |
| GB (1) | GB2622974A (en) |
| WO (1) | WO2023231508A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231508A1 (en) * | 2022-05-31 | 2023-12-07 | 广东邦普循环科技有限公司 | Method for efficiently recovering electrolyte of spent lithium-ion battery |
| WO2024055518A1 (en) * | 2022-09-16 | 2024-03-21 | 广东邦普循环科技有限公司 | Method for recycling lithium from electrolyte of lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2740243A1 (en) * | 1977-09-07 | 1979-03-15 | Bayer Ag | PROCESS FOR THE PRODUCTION OF DIALKYLCARBONATES |
| FR3022695A1 (en) * | 2014-06-18 | 2015-12-25 | Rhodia Operations | PROCESS FOR RECOVERING AN ELECTROLYTE SALT |
| CN108923092A (en) * | 2018-06-29 | 2018-11-30 | 惠州市宙邦化工有限公司 | A kind of waste and old lithium ionic cell electrolyte processing method |
| CN112531227A (en) * | 2019-09-17 | 2021-03-19 | 天津理工大学 | Harmless recycling method for electrolyte in waste lithium ion battery |
| CN111454152B (en) * | 2020-06-22 | 2020-10-30 | 东营市海科新源化工有限责任公司 | Preparation method and preparation device of electronic grade dimethyl carbonate |
| CN114865134A (en) * | 2022-05-31 | 2022-08-05 | 广东邦普循环科技有限公司 | Method for efficiently recycling electrolyte of waste lithium ion battery |
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- 2022-05-31 CN CN202210608686.7A patent/CN114865134A/en active Pending
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2023
- 2023-03-15 WO PCT/CN2023/081684 patent/WO2023231508A1/en active Application Filing
- 2023-03-15 GB GB2318911.1A patent/GB2622974A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231508A1 (en) * | 2022-05-31 | 2023-12-07 | 广东邦普循环科技有限公司 | Method for efficiently recovering electrolyte of spent lithium-ion battery |
| GB2622974A (en) * | 2022-05-31 | 2024-04-03 | Guangdong Brunp Recycling Technology Co Ltd | Method for efficiently recovering electrolyte of spent lithium-ion battery |
| WO2024055518A1 (en) * | 2022-09-16 | 2024-03-21 | 广东邦普循环科技有限公司 | Method for recycling lithium from electrolyte of lithium ion battery |
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| Publication number | Publication date |
|---|---|
| DE112023000108T5 (en) | 2024-05-29 |
| GB2622974A8 (en) | 2024-05-15 |
| WO2023231508A1 (en) | 2023-12-07 |
| GB2622974A (en) | 2024-04-03 |
| GB202318911D0 (en) | 2024-01-24 |
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