CN104882645A - Method for recycling metal ions in waste and old LiCoO2 cells - Google Patents

Method for recycling metal ions in waste and old LiCoO2 cells Download PDF

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CN104882645A
CN104882645A CN201510152901.7A CN201510152901A CN104882645A CN 104882645 A CN104882645 A CN 104882645A CN 201510152901 A CN201510152901 A CN 201510152901A CN 104882645 A CN104882645 A CN 104882645A
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waste
battery
old
licoo
old licoo
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CN104882645B (en
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宋秀玲
戴书琪
徐永胜
何文婷
李婧
谢娅婷
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Changan University
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Changan University
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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
    • 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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  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • 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 provides a method for recycling metal ions in waste and old LiCoO2 cells, wherein waste and old LiCoO2 cells are discharged in a discharge solution and the discharge solution is in the form of an MnSO4-ascorbic acid mixed saline solution. After the discharging process of the waste and old LiCoO2 cells, waste and old LiCoO2 cells are dissolved in an NMP solvent to obtain a supernatant, aluminium foil and LiCoO2 compound. The separated LiCoO2 compound is added into a sulfuric acid and glucose mixed solution to dissolve in the sulfuric acid and glucose mixed solution. According to the invention, after the earlier discharge treatment of waste and old LiCoO2 cells in the MnSO4-ascorbic acid mixed saline solution, the waste and old LiCoO2 cells are recycled. The waste and old LiCoO2 cells are safe, efficient and pollution-free in recovery method. Meanwhile, by adding ascorbic acid, the discharging process is safer, and the discharging efficiency of the saline solution is greatly improved. The post-recycling time is saved. According to the invention, the dissolving efficiency of an organic binder in an organic solvent NMP is high. Meanwhile, the organic solvent NMP can be recycled through the distillation process. Moreover, the glucose is mixed with the sulfuric acid, so that the dissolution efficiency is greatly improved.

Description

The waste and old LiCoO of a kind of recovery 2the method of metal ion in battery
Technical field
The invention belongs to field of lithium, relate to the recovery of waste lithium cell, be specifically related to the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery.
Background technology
Along with popularizing of electronic product, will constantly increase the demand of lithium battery.Consequent old and useless battery pollutes the concern that also result in society, reclaims the waste that waste and old lithium ion battery not only can avoid resource, can also reduce its harm to environment simultaneously.Herein for Problems existing in existing waste and old lithium ion battery process and recovery process, by testing continuous optimization process scheme, finally determine the technological process of the waste and old cobalt acid lithium battery of recovery of an economy, green, environmental protection, to solve the environmental pollution and problem of resource waste that are produced by waste and old lithium ion battery.Metal dust short circuit dischange and NaCl solution is had to soak discharge process for waste lithium cell discharge process in early stage at present.Metal dust short circuit dischange method the tele-release in battery is fallen by short circuit metal, but be easy to short circuit due to during electric discharge, often blasts; NaCl solution soaks electric discharge is simultaneously discharged by electricity by solution generation electric charge and interionic displacement, but can produce a certain amount of Cl during electric discharge 2certain pollution is produced to environment; Therefore, how to carry out the discharge process in early stage of waste lithium cell, and then reclaim a large amount of metals resources in waste lithium cell, a kind of method designing waste lithium cell discharge process seems and is even more important.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to, for waste and old LiCoO 2battery, provides a kind of method of Footwall drift ion, solves metal ion recovery time in prior art long, and organic efficiency is low can produce to environment the problem polluted.
In order to solve the problems of the technologies described above, the application adopts following technical scheme to be achieved:
The waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the method using manganese sulfate and ascorbic acid mixing salt solution as the solution that discharges to waste and old LiCoO 2battery discharges, and then to the waste and old LiCoO after electric discharge 2battery carries out separated and dissolved, obtains compound L iCoO 2, then to compound L iCoO 2carry out dissolving and obtain cobalt ions and lithium ion, finally again separation and recovery is carried out to cobalt ions and lithium ion.
Preferably, described manganese sulfate and the mass ratio of ascorbic acid are (10.5 ~ 14.5): 2.
Further, to waste and old LiCoO 2battery carry out electric discharge complete after be the waste and old LiCoO of dissolution with solvents with 1-METHYLPYRROLIDONE 2battery obtains supernatant, aluminium foil and compound L iCoO 2.
Preferably, described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is (1.4 ~ 1.7): 2.5.
Further, described compound L iCoO 2join after separating in sulfuric acid and glucose mixed solution and dissolve.
Preferably, the mol ratio of sulfuric acid and glucose is (7.5 ~ 9.5): 0.15.
Particularly, the waste and old LiCoO of recovery as above 2the method of metal ion in battery, the method comprises the following steps:
Step one, by waste and old LiCoO 2battery sorting, utilizes manganese sulfate and ascorbic acid to join in deionized water, is (10.5 ~ 14.5): 2 configure electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid;
Step 2, the solution control temperature prepared that step one is obtained at 75 DEG C, waste and old LiCoO 2battery is put in solution and is soaked, and discharges 4 hours;
Step 3, after electric discharge terminates, takes out waste and old LiCoO 2battery, dried waste and old LiCoO 2battery is by the waste and old LiCoO of diluted alkaline method process 2electrolyte in battery, again dried waste and old LiCoO 2battery take 1-METHYLPYRROLIDONE as the waste and old LiCoO of dissolution with solvents 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is (1.4 ~ 1.7): 2.5; Supernatant heating recovery 1-METHYLPYRROLIDONE, evaporation heating and temperature control, at 155 DEG C, takes out aluminium foil;
Step 4, the compound L iCoO obtained in step 3 2join in sulfuric acid and glucose mixed solution, wherein the mol ratio of sulfuric acid and glucose is (7.5 ~ 9.5): 0.15, and control reaction temperature 65 DEG C ~ 85 DEG C, the reaction time is 65min, is stirred well to solid material dissolves complete, obtains leachate;
Step 5, utilizes the leachate obtained in step 4 cobalt ions to sieve and lithium ion sieve separation of cobalt ion and lithium ion, completes separation of metal ions.
Most preferably, the waste and old LiCoO of recovery as above 2the method of metal ion in battery, the method comprises the following steps:
Step one, by waste and old LiCoO 2battery sorting, utilizes manganese sulfate and ascorbic acid to join in deionized water, is that 12.5:2 configures electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid;
Step 2, the solution control temperature prepared that step one is obtained at 75 DEG C, waste and old LiCoO 2battery is put in solution and is soaked, and discharges 4 hours;
Step 3, after electric discharge terminates, takes out waste and old LiCoO 2battery, dried waste and old LiCoO 2battery is by the waste and old LiCoO of diluted alkaline method process 2electrolyte in battery, again dried waste and old LiCoO 2battery take 1-METHYLPYRROLIDONE as the waste and old LiCoO of dissolution with solvents 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is 1.5:2.5; Supernatant heating recovery 1-METHYLPYRROLIDONE, evaporation heating and temperature control, at 155 DEG C, takes out aluminium foil;
Step 4, the compound L iCoO obtained in step 3 2join in sulfuric acid and glucose mixed solution, wherein the mol ratio of sulfuric acid and glucose is 8:0.15, and control reaction temperature 70 DEG C, the reaction time is 65min, is stirred well to solid material dissolves complete, obtains leachate;
Step 5, utilizes the leachate obtained in step 4 cobalt ions to sieve and lithium ion sieve separation of cobalt ion and lithium ion, completes separation of metal ions.
Compared with prior art, useful technique effect is in the present invention:
The present invention utilizes ascorbic acid and manganese sulfate to carry out early stage to waste and old lithium ion battery and reclaims after discharge process, recovery method safety, efficient and not pollution; Adding ascorbic acid makes electric discharge more complete, greatly facilitates salting liquid discharging efficiency, saves later stage recovery time.
The present invention adopts organic solvent 1-METHYLPYRROLIDONE dissolving organic binder bond efficiency high, simultaneously through distillation reusable edible.
The present invention adopts glucose to mix with sulfuric acid and drastically increases dissolved efficiency.
Embodiment
Defer to technique scheme, below provide specific embodiments of the invention, it should be noted that the present invention is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection scope of the present invention.
It should be noted that NMP and 1-METHYLPYRROLIDONE, PVDF and polyvinylidene fluoride.
Embodiment 1:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the method comprises the following steps:
Step one, by waste and old LiCoO 2battery sorting, utilizes manganese sulfate and ascorbic acid to join in deionized water, and be that 12.5:2 configures electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid, the concentration of manganese sulfate is 0.8mol/L;
Step 2, the solution prepared step one obtained is put in water-bath, control temperature at 75 DEG C, waste and old LiCoO 2battery is put in solution and is soaked, and discharges 4 hours;
Step 3, after electric discharge terminates, takes out waste and old LiCoO 2battery, carries out drying with baking oven, dried waste and old LiCoO 2battery is by the waste and old LiCoO of diluted alkaline method process 2electrolyte in battery, as adopted sodium hydroxide solution process, and then takes out waste and old LiCoO 2battery, again dried waste and old LiCoO 2battery take NMP as the waste and old LiCoO of dissolution with solvents 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described NMP and waste and old LiCoO 2mass ratio between binding agent PVDF in battery is 1.5:2.5; Supernatant heating recovery NMP, evaporation heating and temperature control, at 155 DEG C, takes out aluminium foil;
Step 4, the compound L iCoO obtained in step 3 2join in sulfuric acid and glucose mixed solution, wherein the mol ratio of sulfuric acid and glucose is 8:0.15, control reaction temperature 70 DEG C, the concentration of sulfuric acid is (4 ~ 6) mol/L, preferred 4.5mol/L, reaction time is 65min, is stirred well to solid material dissolves complete, obtains leachate;
Step 5, utilizes the leachate obtained in step 4 cobalt ions to sieve and lithium ion sieve separation of cobalt, lithium ion, completes separation of metal ions.
Discharge voltage in concrete steps one is in table 1, and in step 3, the dissolving percentage of binding agent PVDF is in table 2, and in step 4, the leaching rate of cobalt ions is in table 3.Cobalt ions is the ratio of to lithium ion, and therefore leaching rate is identical, characterizes with the leaching rate of cobalt ions.
Embodiment 2:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: be that 11:2 configures electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid in step one.
Discharge voltage in concrete steps one is in table 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is identical with embodiment 1.
Embodiment 3:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: be that 13.5:2 configures electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid in step one.
Discharge voltage in concrete steps one is in table 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is identical with embodiment 1.
Embodiment 4:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: the NMP described in step 3 and waste and old LiCoO 2mass ratio between binding agent PVDF in battery is 1.4:2.5.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is in table 2, and in step 4, the leaching rate of cobalt ions is identical with embodiment 1.
Embodiment 5:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: the NMP described in step 3 and waste and old LiCoO 2mass ratio between binding agent PVDF in battery is 1.7:2.5.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is in table 2, and in step 4, the leaching rate of cobalt ions is identical with embodiment 1.
Embodiment 6:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: in step 4, the mol ratio of sulfuric acid and glucose is 7.5.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is in table 3.
Embodiment 7:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: in step 4, the mol ratio of sulfuric acid and glucose is 9.5.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is in table 3.
Embodiment 8:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: control reaction temperature 65 DEG C in step 4.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is in table 3.
Embodiment 9:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: control reaction temperature 80 DEG C in step 4.
Discharge voltage in concrete steps one is identical with embodiment 1, and in step 3, the dissolving percentage of binding agent PVDF is identical with embodiment 1, and in step 4, the leaching rate of cobalt ions is in table 3.
Comparative example 1:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, difference is only: utilize sodium chloride to join configuration electric discharge solution in deionized water in step one, the concentration of sodium chloride is 0.8mol/L, and the discharge voltage in concrete steps one is in table 4.
Comparative example 2:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, difference is only: utilize sodium chloride and ascorbic acid to join in deionized water in step one and configure the solution that discharges, the concentration of sodium chloride is 0.8mol/L, the mass ratio of sodium chloride and ascorbic acid is 12.5:2, and the discharge voltage in concrete steps one is in table 4.
Comparative example 3:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, difference is only: utilize separately manganese sulfate to join configuration electric discharge solution in deionized water in step one, the concentration of manganese sulfate is 0.8mol/L, and the discharge voltage in concrete steps one is in table 4.
Comparative example 4:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: be the waste and old LiCoO of dissolution with solvents with DMA in step 3 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described DMA and waste and old LiCoO 2mass ratio between binding agent PVDF in battery is 1.5:2.5.In concrete steps three, the dissolving percentage of binding agent PVDF is in table 5.
Comparative example 5:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: be the waste and old LiCoO of dissolution with solvents with dimethyl sulfoxide (DMSO) in step 3 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described dimethyl sulfoxide (DMSO) and waste and old LiCoO 2mass ratio between binding agent PVDF in battery is 1.5:2.5.In concrete steps three, the dissolving percentage of binding agent PVDF is in table 5.
Comparative example 6:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: by the compound L iCoO obtained in step 3 2join in hydrochloric acid and glucose mixed solution, the concentration of hydrochloric acid is (4 ~ 6) mol/L, preferred 4.5mol/L, and wherein the mol ratio of hydrochloric acid and glucose is 8:0.15.In concrete steps four, the leaching rate of cobalt ions is in table 6.
Comparative example 7:
The present embodiment provides the waste and old LiCoO of a kind of recovery 2the method of metal ion in battery, the step of the method is identical with embodiment 1, and difference is only: by the compound L iCoO obtained in step 3 2join in nitric acid and glucose mixed solution, the concentration of nitric acid is (4 ~ 6) mol/L, preferred 4.5mol/L, and wherein the mol ratio of nitric acid and glucose is 8:0.15.In concrete steps four, the leaching rate of cobalt ions is in table 6.
Final discharge voltage in table 1 step one
The dissolving percentage of binding agent PVDF in table 2 step 3
The leaching rate of cobalt ions in table 3 step 4
Table 4 difference electric discharge solution is on the impact of final discharge voltage
Numbering Electric discharge solution type Mass ratio Discharge time (h) Final discharge voltage (V)
Comparative example 1 Sodium chloride 4.0 1.12
Comparative example 2 Sodium chloride and ascorbic acid 12.5：2 4.0 1.09
Comparative example 3 Manganese sulfate 4.0 0.89
Embodiment 1 Manganese sulfate and ascorbic acid 12.5：2 4.0 0.43
The percentile impact of the dissolving of table 5 different solvents kind on binding agent PVDF
The different mixed acid solution of table 6 is on the impact of cobalt ions leaching rate

Claims (8)

1. one kind is reclaimed waste and old LiCoO 2the method of metal ion in battery, is characterized in that: the method using manganese sulfate and ascorbic acid mixing salt solution as the solution that discharges to waste and old LiCoO 2battery discharges, and then to the waste and old LiCoO after electric discharge 2battery carries out separated and dissolved, obtains compound L iCoO 2, then to compound L iCoO 2carry out dissolving and obtain cobalt ions and lithium ion, finally again separation and recovery is carried out to cobalt ions and lithium ion.
2. the waste and old LiCoO of recovery as claimed in claim 1 2the method of metal ion in battery, is characterized in that: described manganese sulfate and the mass ratio of ascorbic acid are (10.5 ~ 14.5): 2.
3. the waste and old LiCoO of recovery as claimed in claim 1 2the method of metal ion in battery, is characterized in that: to waste and old LiCoO 2battery carry out electric discharge complete after be the waste and old LiCoO of dissolution with solvents with 1-METHYLPYRROLIDONE 2battery obtains supernatant, aluminium foil and compound L iCoO 2.
4. the waste and old LiCoO of recovery as claimed in claim 3 2the method of metal ion in battery, is characterized in that: described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is (1.4 ~ 1.7): 2.5.
5. the waste and old LiCoO of recovery as claimed in claim 3 2the method of metal ion in battery, is characterized in that: described compound L iCoO 2join after separating in sulfuric acid and glucose mixed solution and dissolve.
6. the waste and old LiCoO of recovery as claimed in claim 5 2the method of metal ion in battery, is characterized in that: described sulfuric acid and the mol ratio of glucose are (7.5 ~ 9.5): 0.15.
7. the waste and old LiCoO of recovery as claimed in claim 1 2the method of metal ion in battery, is characterized in that: the method comprises the following steps:
Step one, by waste and old LiCoO 2battery sorting, utilizes manganese sulfate and ascorbic acid to join in deionized water, is (10.5 ~ 14.5): 2 configure electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid;
Step 2, the solution control temperature prepared that step one is obtained at 75 DEG C, waste and old LiCoO 2battery is put in solution and is soaked, and discharges 4 hours;
Step 3, after electric discharge terminates, takes out waste and old LiCoO 2battery, dried waste and old LiCoO 2battery is by the waste and old LiCoO of diluted alkaline method process 2electrolyte in battery, again dried waste and old LiCoO 2battery take 1-METHYLPYRROLIDONE as the waste and old LiCoO of dissolution with solvents 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is (1.4 ~ 1.7): 2.5; Supernatant heating recovery 1-METHYLPYRROLIDONE, evaporation heating and temperature control, at 155 DEG C, takes out aluminium foil;
Step 4, the compound L iCoO obtained in step 3 2join in sulfuric acid and glucose mixed solution, wherein the mol ratio of sulfuric acid and glucose is (7.5 ~ 9.5): 0.15, and control reaction temperature 65 DEG C ~ 85 DEG C, the reaction time is 65min, is stirred well to solid material dissolves complete, obtains leachate;
Step 5, utilizes the leachate obtained in step 4 cobalt ions to sieve and lithium ion sieve separation of cobalt ion and lithium ion, completes separation of metal ions.
8. the waste and old LiCoO of recovery as claimed in claim 7 2the method of metal ion in battery, is characterized in that: the method comprises the following steps:
Step one, by waste and old LiCoO 2battery sorting, utilizes manganese sulfate and ascorbic acid to join in deionized water, is that 12.5:2 configures electric discharge solution according to the mass ratio of manganese sulfate and ascorbic acid;
Step 2, the solution control temperature prepared that step one is obtained at 75 DEG C, waste and old LiCoO 2battery is put in solution and is soaked, and discharges 4 hours;
Step 3, after electric discharge terminates, takes out waste and old LiCoO 2battery, dried waste and old LiCoO 2battery is by the waste and old LiCoO of diluted alkaline method process 2electrolyte in battery, again dried waste and old LiCoO 2battery take 1-METHYLPYRROLIDONE as the waste and old LiCoO of dissolution with solvents 2battery obtains supernatant, aluminium foil and compound L iCoO 2, described 1-METHYLPYRROLIDONE and waste and old LiCoO 2mass ratio between binding agent polyvinylidene fluoride in battery is 1.5:2.5; Supernatant heating recovery 1-METHYLPYRROLIDONE, evaporation heating and temperature control, at 155 DEG C, takes out aluminium foil;
Step 4, the compound L iCoO obtained in step 3 2join in sulfuric acid and glucose mixed solution, wherein the mol ratio of sulfuric acid and glucose is 8:0.15, and control reaction temperature 70 DEG C, the reaction time is 65min, is stirred well to solid material dissolves complete, obtains leachate;
Step 5, utilizes the leachate obtained in step 4 cobalt ions to sieve and lithium ion sieve separation of cobalt ion and lithium ion, completes separation of metal ions.
CN201510152901.7A 2015-04-01 2015-04-01 It is a kind of to reclaim waste and old LiCoO2The method of metal ion in battery Expired - Fee Related CN104882645B (en)

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CN110176646A (en) * 2019-05-20 2019-08-27 代辉 A kind of recovery and treatment method of used Li ion cell electrolyte
CN110391474A (en) * 2018-04-23 2019-10-29 中南大学 A kind of charging method of waste and old lithium ion battery
CN111525208A (en) * 2020-04-28 2020-08-11 蜂巢能源科技有限公司 Discharge solution for treating a lithium ion battery, discharge device and use, method for discharging a lithium ion battery
WO2022213678A1 (en) * 2021-04-07 2022-10-13 广东邦普循环科技有限公司 Method for recycling aluminum in waste positive electrode sheet by using selective leaching and application thereof

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