CN114709503A - Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent - Google Patents
Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent Download PDFInfo
- Publication number
- CN114709503A CN114709503A CN202210215151.3A CN202210215151A CN114709503A CN 114709503 A CN114709503 A CN 114709503A CN 202210215151 A CN202210215151 A CN 202210215151A CN 114709503 A CN114709503 A CN 114709503A
- Authority
- CN
- China
- Prior art keywords
- phytic acid
- eutectic solvent
- ion battery
- lithium ion
- acid type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
Landscapes
- 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)
Abstract
The invention relates to a method for mildly and efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent, which is characterized in that polyethylene glycol 200 is used as a hydrogen bond acceptor, phytic acid is used as a hydrogen bond donor, the eutectic solvent is prepared according to the molar ratio of the hydrogen bond acceptor to the hydrogen bond donor of 1: 1-2: 1, and the lithium ion battery anode material is dissolved under the conditions that the mass of the eutectic solvent is 5-10 g, the reaction time is 6-24 hours, and the reaction temperature is 25-80 ℃. The invention provides a method for mildly and efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent, which is simple, convenient, green and mild, has high leaching efficiency, is environment-friendly and has high practical application value.
Description
Technical Field
The invention relates to a method for efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent under a green and mild condition, belonging to the application of the field of waste lithium ion battery recovery.
Background
With the continuous development of global economy, the development and utilization of new energy become hot spots in the field of new energy. The lithium ion battery has the characteristics of large energy storage, light weight, long service life and the like, and is widely applied to the fields of mobile phones, computers, electric vehicles, photographic equipment, household appliances and the like. However, the cost for preparing the anode material of the lithium ion battery is high, and if the metal elements (such as cobalt element) contained in the anode material are not properly treated, the environment is polluted, and the dissolution of the anode material of the lithium ion battery is a key step for recycling the waste lithium ion battery, and has important significance for recycling the waste lithium ion battery.
The eutectic solvent is a two-component eutectic substance formed by combining a hydrogen bond donor and a hydrogen bond acceptor, and is widely applied to the fields of gas absorption, nano material synthesis and the like due to the advantages of simple synthesis, strong designability, strong biodegradability and the like. The phytic acid type eutectic solvent is one of eutectic solvents, phytic acid is easy to combine with metal ions due to the strong chelating capacity of the phytic acid type eutectic solvent, and the eutectic solvent prepared by using the phytic acid as a hydrogen bond donor has the advantages of strong solubility, strong degradability, greenness, no pollution and the like. The traditional method for dissolving the lithium ion battery anode material has the advantages of high cost, low efficiency, high energy consumption and easy generation of secondary pollution, and the condition for dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent is mild, green and efficient, so that the method has wide development prospect.
The invention provides a method for mildly and efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent, which is simple, convenient, green and mild, environment-friendly, high in leaching efficiency and high in practical application value.
Disclosure of Invention
The invention provides a method for mildly and efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent, which is simple, convenient, green and mild, has high leaching efficiency, is environment-friendly and has high practical application value.
The technical scheme adopted by the invention is that,
a method for mildly and efficiently dissolving a lithium ion battery anode material by using a phytic acid type eutectic solvent comprises the following steps of:
1) preparing a phytic acid type eutectic solvent from polyethylene glycol 200 and phytic acid according to different molar ratios under certain conditions;
2) dissolving the phytic acid type eutectic solvent prepared in the step 1) into the lithium ion battery anode material under a certain condition;
3) and (3) carrying out separation analysis on the mixture after the dissolution in the step 2) is finished and calculating the leaching efficiency.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent, in the step 1), the raw materials for preparing the eutectic solvent are polyethylene glycol 200 and phytic acid.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent, in the step 1), the molar ratio of the polyethylene glycol 200 to the phytic acid in the eutectic solvent is 1: 1-2: 1.
Preferably, in the step 1), the temperature for preparing the phytic acid type eutectic solvent is 80 ℃ and the time is 24 hours.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent, in the step 2), the temperature change range for dissolving the lithium ion battery anode material is 25-80 ℃.
Preferably, in the step 2), the mass of the eutectic solvent used in the process of dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent is 5-10 g.
Preferably, in the step 2), the lithium ion battery cathode material dissolved by the phytic acid type eutectic solvent is lithium cobaltate.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent, in the step 2), the mass of lithium cobalt oxide dissolved in the phytic acid type eutectic solvent is 0.1 g.
Preferably, in the step 2), the dissolving time ranges from 6 hours to 24 hours.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent, in the step 3), the mixture obtained after dissolution is centrifuged to obtain the leachate, wherein the centrifugation speed is 12000 r/min, and the centrifugation time is 20 minutes.
Preferably, in the method for gently and efficiently dissolving the lithium ion battery cathode material by using the phytic acid type eutectic solvent, in the step 3), the concentration of the metal elements in the leachate is analyzed and detected, and the leaching efficiency of the phytic acid type eutectic solvent on the metal elements is calculated.
In the technical scheme, the method for mildly and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent is provided, can overcome the defects of the prior art, and is simple, convenient, mild in condition, environment-friendly and high in leaching efficiency.
Detailed Description
Example 1
Adding polyethylene glycol 200 and phytic acid in a molar ratio of 1: 1 into a reagent bottle, adding magnetons into the reagent bottle, and placing the reagent bottle into a magnetic stirring oil bath kettle to heat and stir for 24 hours at the temperature of 80 ℃ to obtain a phytic acid type eutectic solvent polyethylene glycol 200 and phytic acid (1: 1). Adding 0.1 g of lithium cobaltate, 5 g of polyethylene glycol 200, phytic acid (1: 1) and magnetons into a glass reaction bottle, dissolving for 24 hours at 25 ℃, stopping heating and stirring, pouring the obtained mixture into a 15 ml centrifuge tube, centrifuging for 20 minutes at 12000 rpm to obtain a leachate, measuring the concentration of cobalt and lithium in the leachate by using an inductively coupled plasma emission spectrometer, and calculating to obtain the leaching efficiencies of 5 g of polyethylene glycol 200 and phytic acid (1: 1) on cobalt and lithium in the lithium cobaltate at 25 ℃ for 24 hours, wherein the leaching efficiencies are respectively 11.0% and 25.7%.
Example 2
The specific implementation process is the same as that of example 1, the dissolving temperature is changed from 25 ℃ to 60 ℃, other conditions are not changed, and the leaching efficiencies of 5 g of polyethylene glycol 200 to phytic acid (1: 1) to cobalt and lithium in lithium cobaltate under the condition of 60 ℃ for 24 hours are respectively 42.9% and 56.0%.
Example 3
The specific implementation process is the same as that of example 1, the dissolving temperature is changed to 80 ℃, other conditions are not changed, and the leaching efficiency of 5 g of polyethylene glycol 200 to phytic acid (1: 1) to cobalt and lithium in lithium cobaltate under the condition of 80 ℃ for 24 hours is calculated to be more than 98.0%.
Example 4
The specific implementation process is the same as that in example 3, the molar ratio of the polyethylene glycol 200 to the phytic acid in the eutectic solvent is changed to 2: 1, other conditions are not changed, and the leaching efficiency of 5 g of the polyethylene glycol 200 to the phytic acid (2: 1) on cobalt and lithium in the lithium cobaltate is 15.0 percent and 40.3 percent respectively under the condition of 80 ℃ for 24 hours.
Example 5
The specific implementation process is the same as that in example 3, the dissolving time is changed to 6 hours, the mass of the eutectic solvent is changed to 10 grams, and the leaching efficiencies of 10 grams of polyethylene glycol 200 and phytic acid (1: 1) on cobalt and lithium in lithium cobaltate at the temperature of 80 ℃ for 6 hours are calculated to be 54.5 percent and 63.9 percent respectively.
Example 6
The specific implementation process is the same as that in example 3, the dissolving time is changed to 12 hours, the mass of the eutectic solvent is changed to 10 g, other conditions are not changed, and the leaching efficiencies of 10 g of polyethylene glycol 200 and phytic acid (1: 1) to cobalt and lithium in lithium cobaltate at the temperature of 80 ℃ for 12 hours are calculated to be 65.4% and 74.5% respectively.
Claims (7)
1. A method for dissolving the positive electrode material of lithium ion battery by using phytic acid type eutectic solvent mildly and efficiently is characterized in that the eutectic solvent for dissolving the positive electrode material of lithium ion battery is the phytic acid type eutectic solvent.
2. The method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent according to claim 1, wherein the hydrogen bond donor in the phytic acid type eutectic solvent is phytic acid, the hydrogen bond acceptor is polyethylene glycol 200, and the structural formula of the method is as follows:
3. the method for gently and efficiently dissolving the lithium ion battery cathode material by using the phytic acid type eutectic solvent according to claim 1, wherein the molar ratio of the polyethylene glycol 200 to the phytic acid in the prepared eutectic solvent is 1: 1-2: 1.
4. The method for gently and efficiently dissolving the lithium ion battery cathode material by using the phytic acid type eutectic solvent according to claim 1, wherein the mass of the phytic acid type eutectic solvent is 5-10 g.
5. The method for gently and efficiently dissolving the lithium ion battery positive electrode material by using the phytic acid type eutectic solvent according to claim 1, wherein the dissolved lithium ion battery positive electrode material is lithium cobaltate.
6. The method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent according to claim 1, wherein the temperature for dissolving the lithium ion battery anode material is 25-80 ℃.
7. The method for gently and efficiently dissolving the lithium ion battery anode material by using the phytic acid type eutectic solvent according to claim 1, wherein the time for dissolving the lithium ion battery anode material by using the eutectic solvent is 6 to 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210215151.3A CN114709503A (en) | 2022-03-07 | 2022-03-07 | Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210215151.3A CN114709503A (en) | 2022-03-07 | 2022-03-07 | Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114709503A true CN114709503A (en) | 2022-07-05 |
Family
ID=82166806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210215151.3A Pending CN114709503A (en) | 2022-03-07 | 2022-03-07 | Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114709503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116099517A (en) * | 2023-01-16 | 2023-05-12 | 廊坊师范学院 | Adsorption material prepared by using magnetic eutectic solvent and method for adsorbing dye in waste engine oil and waste water by using adsorption material |
-
2022
- 2022-03-07 CN CN202210215151.3A patent/CN114709503A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116099517A (en) * | 2023-01-16 | 2023-05-12 | 廊坊师范学院 | Adsorption material prepared by using magnetic eutectic solvent and method for adsorbing dye in waste engine oil and waste water by using adsorption material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111041216B (en) | Method for extracting and recycling waste ternary lithium battery positive electrode metal material by using glycerol eutectic solvent | |
| CN110760682A (en) | Process for selectively recovering lithium in waste lithium iron phosphate batteries by virtue of mechanochemical activation method | |
| CN108808150B (en) | Method for comprehensively recycling waste ternary electrode material | |
| CN104831072A (en) | Recycling method of waste lithium iron phosphate battery positive electrode | |
| CN102199705B (en) | Method for recovering lithium metal from used batteries | |
| CN111573662A (en) | Method for preparing high-capacity negative electrode material by utilizing recovered graphite | |
| CN101817547B (en) | Method for recovering mixed rare earth chlorides from neodymium iron boron permanent magnet material scraps | |
| Zhang et al. | Organic electrolytes recycling from spent lithium‐ion batteries | |
| CN109761276B (en) | Layered ammonium vanadate electrode material and preparation method and application thereof | |
| CN111807417B (en) | Method for dissolving and extracting lithium cobaltate by using polyglycol/thiourea type eutectic solvent | |
| CN111977627A (en) | Method for recycling lithium iron phosphate anode material of lithium ion battery | |
| CN114709503A (en) | Method for mild and efficient dissolution of lithium ion battery anode material by using phytic acid type eutectic solvent | |
| CN106058263A (en) | Preparation method and application of cobaltosic oxide porous fiber material | |
| CN112047319A (en) | Method for recovering battery-grade iron phosphate from waste iron phosphate slag | |
| CN116169386A (en) | Method for efficiently recycling waste ternary lithium ion battery anode material by using green solvent prepared from fruits such as pome fruits | |
| CN113061727B (en) | Method for selectively leaching metal components in waste lithium cobalt oxide battery by polyethylene glycol-citric acid solvent | |
| WO2023040010A1 (en) | Method for repairing cathode material of spent lithium ion battery | |
| CN114388923A (en) | Method for repairing and regenerating waste lithium iron phosphate anode material and lithium iron phosphate anode material | |
| CN117766896A (en) | Method for recycling lithium ion battery anode material by using amino acid type eutectic solvent | |
| CN109818100A (en) | A kind of modified LiFePO4 anode waste reuse method of reparation | |
| Ersha et al. | Low-temperature molten-salt-assisted recycling of spent LiNi1/3Co1/3Mn1/3O2 cathode materials | |
| CN108400401A (en) | A method of using the active material of waste and old lithium dynamical battery separation as Material synthesis nickle cobalt lithium manganate | |
| CN115652108B (en) | Method for dissolving and recycling lithium cobaltate by eutectic solvent | |
| CN117721323A (en) | Novel method for extracting cobalt from aqueous solution by using hydrophobic eutectic solvent | |
| CN113528833A (en) | Method for recycling waste lithium ion battery anode material by using reed biomass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |