CN109004306B - Efficient recovery method of waste terpolymer lithium ion power battery material - Google Patents
Efficient recovery method of waste terpolymer lithium ion power battery material Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 32
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 18
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 229920001897 terpolymer Polymers 0.000 title claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000967 suction filtration Methods 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims abstract description 18
- 238000002386 leaching Methods 0.000 claims abstract description 14
- 244000005700 microbiome Species 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 230000000813 microbial effect Effects 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 18
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000010926 waste battery Substances 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000010949 copper Substances 0.000 abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052802 copper Inorganic materials 0.000 abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010406 cathode material Substances 0.000 abstract description 10
- 229910017052 cobalt Inorganic materials 0.000 abstract description 9
- 239000010941 cobalt Substances 0.000 abstract description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 9
- 239000010405 anode material Substances 0.000 abstract description 7
- 229910052759 nickel Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 5
- 239000007773 negative electrode material Substances 0.000 abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 241000193375 Bacillus alcalophilus Species 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- JGUQDUKBUKFFRO-CIIODKQPSA-N dimethylglyoxime Chemical compound O/N=C(/C)\C(\C)=N\O JGUQDUKBUKFFRO-CIIODKQPSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
-
- 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)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a high-efficiency recovery method of waste ternary polymer lithium ion power battery materials, which comprises the following steps: firstly, discharging a waste ternary polymer power lithium battery; step two, physically disassembling to obtain a battery unit, and stripping a current collector Cu by a microbial alkaline leaching method; step three, stripping the positive electrode and the negative electrode from each other by a microbial acid leaching method; step four, adding the stripped positive plate into acetone for constant temperature treatment, then performing suction filtration by using a suction filtration funnel, drying and screening out a positive material by using a yarn screen; and step five, crushing the peeled negative plate, sieving the crushed negative plate by a 40-160-mesh sieve, adding the crushed negative plate into acetone for constant-temperature treatment, performing suction filtration by using a suction filtration funnel, and drying at 100 ℃ to obtain the carbon negative electrode material. The production effect can be improved by adding the alkali-resistant microorganisms, and the dissolving effect of various heavy metals such as copper, chromium, manganese, cobalt, nickel and the like in acid can be effectively improved by adding the acid-resistant microorganisms, so that the subsequently recovered anode and cathode materials are safer.
Description
Technical Field
The invention relates to the technical field of lithium battery recycling, in particular to a high-efficiency recycling method of a waste terpolymer lithium ion power battery material.
Background
With the rise of new energy automobiles to national strategies, lithium ion power batteries are widely applied, the market demand of batteries at a time is increased explosively, the prices of relevant materials of anodes, cathodes and current collectors which are key materials for manufacturing the batteries are increased rapidly, the demand of precursor materials of the battery materials is increased, a large amount of raw materials are exploited, resources are wasted excessively, the environment is damaged, the increase of the usage amount of the batteries causes pressure on the environment after the waste batteries are eliminated, and the recycling of the waste batteries and the optimized utilization of the materials are paid attention to in order to relieve the price pressure of the raw materials, reduce the consumption of the resources and relieve the pollution of the waste batteries.
Researchers at home and abroad research on the recovery of waste lithium ion batteries and the optimized utilization of materials; for example, LI Jin-hui et al (LI Jin-hui, SHI Pi-xing, WANG Ze-feng, CHEN Yao, CHANG Chen-chi. [ J ]. Chemosphere, 2009, 77(8): 1132) 1136) use ultrasonic cleaning to separate the active material from the current collector, then leach the cobalt element with hydrochloric acid, and precipitate to recover the cobalt. The process has the defects of high energy consumption for separating active substances from a current collector, high equipment requirement for leaching cobalt by hydrochloric acid and the like, and restricts the application in the aspect of industrialization. Wang Rong-chi et al (WANG Rong-chi, LIN Yu-chuan, WU She-huang [ J ]. Hydrometallurgy, 2009, 99(3/4): 194-201) for ternary lithium batteries leach valuable metals with high concentration hydrochloric acid, then use potassium permanganate to oxidize and precipitate manganese, use dimethylglyoxime to extract nickel, and use sodium hydroxide to precipitate and recover cobalt. The method adopts expensive chemical reagents, has too long process flow and poor economical efficiency, and is difficult to realize industrialization. Therefore, it is necessary to find an economical, reasonable, high-efficiency and environment-friendly method for recycling waste lithium batteries.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a high-efficiency recovery method of a waste terpolymer lithium ion power battery material.
The technical scheme of the invention is as follows:
a high-efficiency recovery method of waste terpolymer lithium ion power battery materials comprises the following steps:
firstly, discharging the waste battery to 0-0.01V to ensure the safety in the disassembling process;
secondly, carrying out alkaline leaching method on the cell units obtained by disassembling the cell to strip the Cu current collector;
step three, drying the unit pieces at 95-105 ℃, processing the unit pieces by adopting an acid leaching method, taking out the unit pieces, and manually separating to obtain a positive plate and a negative plate; then, respectively drying the positive plate and the negative plate;
step four, adding the positive plate into acetone solution, wherein the solid-to-liquid ratio is 1 (3-8), keeping the temperature at 40-70 ℃ for 0.5-2h, then performing suction filtration by using a suction filtration funnel, drying at 95-105 ℃, and screening out the ternary positive material by using a yarn screen;
and step five, crushing the negative pole piece, sieving the crushed negative pole piece by a 40-160-mesh sieve, adding the crushed negative pole piece into acetone, wherein the solid-to-liquid ratio is 1 (3-8), keeping the temperature at 40-70 ℃ for 0.5-2h, performing suction filtration by using a suction filtration funnel, and drying the carbon negative pole piece at 95-105 ℃ to obtain the carbon negative pole material.
Preferably, in the second step, the alkaline solution used in the alkaline leaching method is a NaOH solution; the concentration of the NaOH solution is 0.2-0.8 mol/L; the solid-liquid ratio is 1: (8-15); the time is 20-35 min; the added microorganism is alkaline-resisting Bacillus ALCALOPHILUS M29.
The alkali-resistant BACILLUS ALCALOPHILUS M29 has a preservation date of 1 month and 6 days in 2009, and the preservation unit is totally called China center for type culture Collection, and the preservation registration number is CCTCC NO: M209006. The addition of the alkali-resistant bacillus can effectively shorten the treatment time of the alkaline leaching method.
The NaOH solution can eliminate most of electrolyte, dissolve the contact surface of the copper current collector and the negative electrode material and strip the copper current collector.
Preferably, in the third step, the acid solution used in the acid leaching method is a HAc solution; the concentration of the HAc solution is 2-5mol/L, the heating temperature is 60-100 ℃, and the solid-to-liquid ratio is 1: (1-3) for 0.5-1 h; the added microorganism is acid-resistant bacillus ZM-05.
The microbial acid-resistant bacillus ZM-05 can effectively improve the dissolving effect of various heavy metals such as copper, chromium, manganese, cobalt, nickel and the like in acid, so that the subsequently recovered anode and cathode materials are safer.
And dissolving the interfaces of the positive and negative pole pieces and the organic isolating film by the HAc solution to separate the positive and negative pole pieces and the organic isolating film so as to obtain the positive pole piece and the negative pole piece.
The acetone can dissolve the binder in the anode and cathode materials to enable the anode and cathode materials to automatically fall off, and can be recycled.
Preferably, the recycled positive and negative electrode powder materials are subjected to high-temperature purification and lattice optimization treatment.
The invention has the advantages that:
the invention adopts a chemical leaching method as a main method and a simple physical method as an auxiliary method, obtains Cu and Al current collectors by an acid-base soaking method, then adopts a solvent leaching method to dissolve a binder to separate positive and negative active materials, and obtains a positive material and a negative material with high quality appearance and good crystal form retention degree through the processes of crushing, extraction screening, drying, yarn screening and the like, and the process method has high material recovery efficiency: 85% of positive electrode material, 80% of negative electrode material and 90% of copper current collector, the problems of purification energy consumption and difficulty of Ni, Co and Mn elements are reduced, the production effect can be improved by adding alkali-resistant microorganisms, the dissolving effect of various heavy metals such as copper, chromium, manganese, cobalt and nickel in acid can be effectively improved by adding acid-resistant microorganisms, and the subsequently recovered positive and negative electrode materials are safer. The method has the advantages of economy, reasonability, high recovery efficiency, environmental friendliness and the like, and provides a new way for recovering and optimizing the waste ternary polymer lithium ion power battery material.
Detailed Description
Example 1:
a high-efficiency recovery method of waste terpolymer lithium ion power battery materials comprises the following steps:
firstly, discharging a waste terpolymer lithium ion power battery (60 Ah) to 0V, and then disassembling the battery to obtain a unit piece;
step two, adding the unit tablets into 1mol/L microbial diluted alkali for soaking for 30min, wherein the solid-to-liquid ratio is 1: 10; stripping to obtain a copper current collector; the added microorganism is alkaline-resisting Bacillus ALCALOPHILUS M29; the addition amount is 1 × 107cfu；
And step three, adding the unit pieces dried at the temperature of 100 ℃ into 3mol/L microbial acetic acid solution for heat treatment at the temperature of 75 ℃ for 40min, wherein the solid-to-liquid ratio is 1: 1.2; the microorganism is acid-resistant Bacillus ZM-05, and is added in an amount of 5 x 105cfu; taking out the unit pieces and manually separating to obtain a positive plate and a negative plate; then, respectively drying the positive plate and the negative plate;
step four, adding the positive plate into acetone, keeping the temperature at 55 ℃ for 1h with the solid-to-liquid ratio of 1:5, performing suction filtration by using a suction filtration funnel, drying at 100 ℃, and screening out a ternary positive material by using a yarn screen;
step five, crushing the negative plate, sieving the crushed negative plate by a 60-mesh sieve, and then adding the crushed negative plate into acetone, wherein the solid-to-liquid ratio is 1: 5; keeping the temperature at 60 ℃ for 1h, then performing suction filtration by using a suction filtration funnel, and drying at 95-105 ℃ to obtain the carbon cathode material.
Wherein the recovery efficiency of the anode material reaches 85.2 percent, and the recovery efficiency of the cathode material reaches 81.1 percent.
Example 2:
a high-efficiency recovery method of waste terpolymer lithium ion power battery materials comprises the following steps:
firstly, discharging a waste terpolymer lithium ion power battery (60 Ah) to 0V, and then disassembling the battery to obtain a unit piece;
step two, adding the unit tablets into 0.5mol/L diluted alkali for soaking for 20min, wherein the solid-to-liquid ratio is 1: 8; stripping to obtain a copper current collector; the added microorganism is alkaline-resisting Bacillus ALCALOPHILUS M29; the addition amount is 2 x 107cfu；
And step three, adding the unit pieces dried at the temperature of 105 ℃ into 2mol/L acetic acid solution for heat treatment at the temperature of 100 ℃ for 30min, wherein the solid-to-liquid ratio is 1: 3; the microorganism is acid-resistant Bacillus ZM-05, and the addition amount is 2 x 105cfu; taking out the unit pieces and manually separating to obtain a positive plate and a negative plate; then, respectively drying the positive plate and the negative plate;
step four, adding the positive plate into acetone, keeping the temperature at 70 ℃ for 0.5h with the solid-to-liquid ratio of 1:3, performing suction filtration by using a suction filtration funnel, drying at 105 ℃, and screening out a ternary positive material by using a yarn screen;
step five, crushing the negative plate, sieving the crushed negative plate by a 60-mesh sieve, and then adding the crushed negative plate into acetone, wherein the solid-to-liquid ratio is 1: 8; keeping the temperature at 40 ℃ for 2h, then performing suction filtration by using a suction filtration funnel, and drying at 95 ℃ to obtain the carbon cathode material.
Wherein the recovery efficiency of the anode material reaches 85.1%, and the recovery efficiency of the cathode material reaches 80.7%.
Example 3:
a high-efficiency recovery method of waste terpolymer lithium ion power battery materials comprises the following steps:
firstly, discharging a waste terpolymer lithium ion power battery (60 Ah) to 0.007V, and then disassembling the battery to obtain a unit piece;
step two, adding the unit piece to 2mol/LSoaking in dilute alkali for 35min, wherein the solid-to-liquid ratio is 1: 15; stripping to obtain a copper current collector; the added microorganism is alkaline-resisting Bacillus ALCALOPHILUS M29; the addition amount is 3 x 107cfu；
And step three, adding the unit pieces dried at the temperature of 95 ℃ into 5mol/L acetic acid solution for heat treatment at the temperature of 95 ℃ for 60min, wherein the solid-to-liquid ratio is 1: 1; the microorganism is acid-resistant Bacillus ZM-05 in an amount of 8 x 105cfu; taking out the unit pieces and manually separating to obtain a positive plate and a negative plate; then, respectively drying the positive plate and the negative plate;
step four, adding the positive plate into acetone, keeping the temperature at 40 ℃ for 2 hours at a solid-to-liquid ratio of 1:8, performing suction filtration by using a suction filtration funnel, drying at 95 ℃, and screening out a ternary positive material by using a yarn screen;
and step five, crushing the negative plate, sieving the crushed negative plate by a 60-mesh sieve, and then adding the crushed negative plate into acetone, wherein the solid-to-liquid ratio is 1: 3; keeping the temperature at 70 ℃ for 0.5h, then performing suction filtration by using a suction filtration funnel, and drying at 105 ℃ to obtain the carbon cathode material.
Wherein the recovery efficiency of the anode material reaches 85.1%, and the recovery efficiency of the cathode material reaches 80.8%.
Comparative example 1
The alkaline-fast bacillus in example 1 was removed.
It was determined that the alkaline soak time of inventive example 1 was significantly reduced compared to the alkaline soak time of comparative example 1.
Comparative example 2
The acid-tolerant Bacillus strain of example 1 was removed.
Through detection, in the pickle liquor of the embodiment 1 of the invention, the contents of various metals such as copper, chromium, manganese, cobalt, nickel and the like are all improved compared with the content of the comparative example 2, the improvement ratio is different from 3 to 12 percent, and the content of metal cobalt is improved to 11.8 percent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A high-efficiency recovery method of waste terpolymer lithium ion power battery materials is characterized by comprising the following steps:
firstly, discharging the waste battery to 0-0.01V to ensure the safety in the disassembling process;
secondly, stripping a Cu current collector of the cell unit piece obtained by disassembling the cell by a microbial alkaline leaching method;
step three, drying the unit pieces at 95-105 ℃, processing the unit pieces by adopting a microbial acid leaching method, taking out the unit pieces, and manually separating to obtain a positive plate and a negative plate; then, respectively drying the positive plate and the negative plate;
step four, adding the positive plate into acetone solution, wherein the solid-to-liquid ratio is 1 (3-8), keeping the temperature at 40-70 ℃ for 0.5-2h, then performing suction filtration by using a suction filtration funnel, drying at 95-105 ℃, and screening out the ternary positive material by using a yarn screen;
step five, crushing the negative pole piece, sieving the crushed negative pole piece by a 40-160-mesh sieve, adding the crushed negative pole piece into acetone, wherein the solid-to-liquid ratio is 1 (3-8), keeping the temperature at 40-70 ℃ for 0.5-2h, performing suction filtration by using a suction filtration funnel, and drying the obtained product at 95-105 ℃ to obtain a carbon negative pole material;
in the second step, the alkaline solution used in the alkaline leaching method is a NaOH solution; the concentration of the NaOH solution is 0.2-0.8 mol/L; the solid-liquid ratio is 1: (8-15); the time is 20-35 min; the added microorganism is alkali-resistant bacillus M29.
2. The method for efficiently recycling the waste terpolymer lithium ion power battery material as claimed in claim 1, wherein in the third step, the acid solution used in the acid leaching method is HAc solution; the concentration of the HAc solution is 2-5mol/L, the heating temperature is 60-100 ℃, and the solid-to-liquid ratio is 1: (1-3) for 0.5-1 h; the added microorganism is acid-resistant bacillus ZM-05.
3. The method for efficiently recycling the waste terpolymer lithium ion power battery material according to claim 1, wherein after the fifth step is finished, the recycled positive and negative electrode powder material can be subjected to high-temperature purification and lattice optimization treatment.
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Application publication date: 20181214 Assignee: Changxing Noble Power Co.,Ltd. Assignor: Changxing Sino Russian new energy materials technology Research Institute Contract record no.: X2022980027431 Denomination of invention: An Efficient Recycling Method for Waste Ternary Polymer Lithium Ion Power Battery Materials Granted publication date: 20201002 License type: Common License Record date: 20221215 |
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