CN103956533A - Method for preparing cathode material of lithium ion battery - Google Patents
Method for preparing cathode material of lithium ion battery Download PDFInfo
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- CN103956533A CN103956533A CN201410125457.5A CN201410125457A CN103956533A CN 103956533 A CN103956533 A CN 103956533A CN 201410125457 A CN201410125457 A CN 201410125457A CN 103956533 A CN103956533 A CN 103956533A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a method for preparing a cathode material of a lithium ion battery. The method comprises the following steps: 1, separating a cathode material on a cathode sheet of a waste and old lithium ion battery or a cathode material in lithium ion battery production scraps; and 2, determining the mass ratio of useful elements in the separated cathode material, calculating deficient elements of the separated cathode material according to the mass ratio of the elements of raw materials for preparing the cathode material of the lithium ion battery, adding compounds of the deficient elements in order to reach the stoichiometric ratio of a target product, and preparing the cathode material of the lithium ion battery. The method can recycle cathode materials comprising lithium cobaltate, nickel cobalt lithium manganate and lithium manganate used in waste and old lithium ions and cathode material scraps comprising lithium cobaltate, nickel cobalt lithium manganate and lithium manganate generated in the production of the lithium ion battery according to the waste recycling situation.
Description
Technical field:
The invention belongs to technical field prepared by battery material, be specifically related to a kind of method of preparing cathode material for lithium ion battery.
Background technology:
Since the nineties in 20th century, due to lithium ion battery because charging voltage is high, specific energy is large, have extended cycle life, fail safe is good, nuisanceless, memory-less effect, self discharge are little etc., and advantage is developed on a large scale.Now this battery has been widely used in portable type electronic product field, comprises mobile phone, notebook computer, video camera, digital camera, medicine equipment etc.In recent years, the volume of production and marketing of World Battery is always to exceed every year 10% speed increment.China is maximum in the world battery production state and country of consumption.The cathode material of preparing lithium ion battery is mainly cobalt acid lithium early stage, and the material such as nickle cobalt lithium manganate and LiMn2O4 has also obtained application in recent years.Taking the consumption of cobalt as example, China is annual to produce more than battery just needs metallic cobalt 3000t, and wherein, more than 60% cobalt will rely on import.Battery contained material after life termination is still present in battery, as arbitrarily abandoned or enter nature together with other rubbish, in battery, contained active material is easy to be penetrated in soil, and polluted underground water, and then enter in fish, crops, destroy the mankind's living environment, indirectly threaten the mankind's health.Meanwhile, material contained in battery is also raw material important in industrial production, and in waste and old lithium ion battery, contained cobalt, copper, nickel, lithium etc. especially have industrial application value.For this reason, people have launched large quantity research to the recycling of positive electrode in recent years.The method of the recovery lithium ion battery cathode active material providing, mainly based on hydrometallurgical processes, is first collected together cathode material, then by acid-soluble solution, and makes the valuable material in material obtain separating-purifying through methods such as precipitation or extractions.This process to reclaim and to obtain pure compound as target from old and useless battery.In fact, no matter be that cathode material for lithium ion battery is after recycling, or the cathode-side corner material producing in battery preparation process, the active material composition in them does not all change, and therefore can adopt simple method to carry out circular regeneration to these materials.In addition, known according to the development of recent lithium ion battery cathode, except cobalt acid lithium, the material such as nickle cobalt lithium manganate and LiMn2O4 is also applied and maybe may be applied in battery in battery, the complexity that this becomes the cathode material kind of waste and old lithium ion battery, the recovery and treatment method that some of early development can only reclaim cobalt acid lithium does not find a place where one uses one's talents in practice.According to above situation, exploitation can meet existing lithium ion battery cathode waste material and generate the technique of situation, particularly can also meet economical and practical technology and just seem and be even more important and urgently.
Summary of the invention:
The object of the invention is taking into full account the generation situation of cathode-side corner material in cathode material for lithium ion battery and battery production; provide a kind of simple, economical and practical, can scale recycle the method for preparing cathode material for lithium ion battery of cathode material for lithium ion battery.
The method of preparing cathode material for lithium ion battery of the present invention, is characterized in that, comprises the following steps:
A, cathode material or the lithium ion battery isolated in waste and old lithium ion battery cathode sheets are produced the cathode material in leftover pieces;
B, measure the shared mass ratio of each useful element in isolated cathode material, according to the raw-material element mass ratio of preparing cathode material for lithium ion battery, by calculate in isolated cathode material, add the compound of not enough element reach the stoichiometric proportion of object, then prepare cathode material for lithium ion battery.
In step a, the described cathode material of isolating in waste and old lithium ion battery cathode sheets is preferably: in water-less environment, the shell of old and useless battery is opened, isolate cathode sheets wherein, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, refilter, collect cathode sheets, again by ultrasonic wave or scrub the cathode material making in cathode sheets and split away off from aluminium collector sheet, through screening, cathode material is separated with aluminium collector sheet again, obtain cathode material.
In step a, described isolate the cathode material that lithium ion battery produces in leftover pieces and be preferably: by ultrasonic wave or scrub the cathode material that lithium ion battery is produced in leftover pieces and split away off from aluminium collector sheet, through screening, cathode material is separated with aluminium collector sheet again, obtain cathode material.
Described isolated cathode material is one or more mixtures in cobalt acid lithium, nickle cobalt lithium manganate and LiMn2O4.
Described step b prepares cathode material for lithium ion battery, and it is preferably: then isolated cathode material and the compound that adds the not enough element of institute are mixed through pulverizing, pass through high temperature solid-state method and again make cathode material for lithium ion battery.
Described pulverizing can be that ball milling or ultrasonic wave are pulverized.
Described high temperature solid-state method makes cathode material for lithium ion battery again, and its preferred steps is: the material mixing is calcined, and each calcining heat is 600 DEG C～920 DEG C, and calcination time is 5-20 hour, obtains thus cathode material for lithium ion battery.
Cathode material in lithium ion battery is mainly cobalt acid lithium, and other material comprises that nickle cobalt lithium manganate and LiMn2O4 etc. also have application.In battery life termination, these materials are still present in battery.Meanwhile, when preparing lithium ion battery, also can produce some leftover pieces.Cathode material in these old and useless batterys and in leftover pieces, will be to environment if do not reclaimed, and is also a kind of waste of resource.It is raw material that the present invention adopts the cathode material reclaiming from waste and old lithium ion battery and battery leftover pieces, after adding essential elements, prepare new cathode material, not only can reduce the pollution to environment, and be the re-using to resource, realize recycling of cathode material for lithium ion battery.The present invention adopts directly the useless cathode material reclaiming is obtained to the mode of active material through living again, and has not only simplified technological process, and has reduced the demand of technique to equipment and chemicals.This external application physical method is separated cathode material from cathode sheets, can reduce the use of chemicals, thus reduce the adding of impurity.The present invention is according to the mass ratio of each useful element in raw material, add the compound of scarce element, then pass through batch mixing and sintering circuit, can prepare the cathode material of monobasic, binary and ternary.The present invention can, according to different raw material, formulate different calcination times and calcining heat, thereby obtains the better material of performance.
These features of the present invention, not only can make the pollutant that produces in whole preparation process seldom and can obtain harmless treatment, and can improve the economic benefit of whole flow process, reduction preparation cost.
The present invention compared with prior art, has following advantage or effect:
1) recycling of the cathode material leftover pieces such as the present invention can be according to the waste material situation reclaiming, cobalt acid lithium, nickle cobalt lithium manganate and the LiMn2O4 producing when realizing the cathode materials such as cobalt acid lithium, nickle cobalt lithium manganate and LiMn2O4 to using in applying waste lithium ionic and preparing lithium ion battery.
2) equipment used in the present invention is simple, and preparation flow is few, and fluff pulp in preparation process is very little and can accomplish innoxious preparation, has advance in technology;
3) the present invention is easy to be applied in large-scale production, solves the environmental issue that may be caused by these old and useless batterys and battery production leftover pieces, has very high economy and social value.A kind of preparation technology of economical and practical cathode material for lithium ion battery.
Brief description of the drawings:
Fig. 1 is flow chart of the present invention.
Embodiment:
Following examples are to further illustrate of the present invention, instead of limitation of the present invention.
Embodiment 1:
The waste and old lithium ion battery that the present embodiment will reclaim is to collect from the market to obtain the monobasic lithium ion battery that cathode material is cobalt acid lithium, recycles flow chart as shown in Figure 1.The recycling of the present embodiment waste lithium ion battery cathode material is in the method for preparing cathode material for lithium ion battery, and it comprises the steps:
1) in anhydrous glove box, split battery, the shell of old and useless battery is opened, the cathode sheets of battery is separated from battery, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, wash away electrolyte with dimethyl carbonate (DMC), refilter, collect cathode sheets.Cathode sheets is put into water after taking out, and by ul-trasonic irradiation, cobalt acid lithium cathode material is separated with aluminium flake, then sieves cathode material is separated with aluminium flake with sub-sieve, the dry cathode material cobalt acid lithium of isolating.
2) in 1 gram of cathode material that mensuration reclaims, the quality of lithium, cobalt, aluminium, nickel and the each element of manganese is respectively 0.055,0.56,0.0013,0.00001 and 0.000004 gram.In the cobalt acid lithium waste material reclaiming, the content of nickel, manganese and aluminium is very low, can not affect as raw material and prepare cobalt acid lithium cathode material.
3) taking the cobalt acid lithium waste material that reclaims as main raw material(s), according to cobalt acid lithium (LiCoO
2) mass ratio of cobalt and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplementing lithium carbonate (even if the ratio of the amount of substance of the Li in last raw material and Co is 1:1), ball milling 10h fully mixes material.Compound is first calcined 5h under 600 DEG C of temperature conditions, grind 1h, and then calcination time is 20h at 920 DEG C after cooling, can obtain the cobalt acid lithium cathode material that 0.2 multiplying power discharging capacity is 140mAh/g.
Embodiment 2
The present embodiment waste and old lithium ion battery to be processed is to collect from the market to obtain the lithium ion battery that cathode material is LiMn2O4.The recycling of the present embodiment waste lithium ion battery cathode material is in the method for preparing cathode material for lithium ion battery, and it comprises the following steps:
1) in anhydrous glove box, split battery, the shell of old and useless battery is opened, the cathode sheets of battery is separated from battery, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, wash away electrolyte with dimethyl carbonate (DMC), refilter, collect cathode sheets.Cathode sheets is put into water after taking out, and by ul-trasonic irradiation, LiMn2O4 cathode material is separated with aluminium flake, then sieves cathode material is separated with aluminium flake with sub-sieve, dry isolated cathode material LiMn2O4.
2) quality of lithium, cobalt, aluminium, nickel and the each element of manganese in 1 gram of cathode material that mensuration reclaims.
3) taking the LiMn2O4 waste material that reclaims as main raw material(s), according to LiMn2O4 (LiMn
2o
4) mass ratio of manganese and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplementing lithium carbonate, ball milling 10h fully mixes material.Compound is first calcined 5h under 650 DEG C of temperature conditions, grind 1h, and then calcination time is 10h at 850 DEG C, can obtain the LiMn2O4 cathode material that 0.2 multiplying power discharging capacity is 108mAh/g after cooling.
Embodiment 3
The present embodiment waste and old lithium ion battery to be processed is to collect from the market to obtain the lithium ion battery that cathode material is nickel manganese cobalt acid lithium.The recycling of the present embodiment waste lithium ion battery cathode material, in the method for preparing cathode material for lithium ion battery, comprises the following steps:
1) in anhydrous glove box, split battery, the shell of old and useless battery is opened, the cathode sheets of battery is separated from battery, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, wash away electrolyte with dimethyl carbonate, refilter, collect cathode sheets.The way that use is scrubbed makes the cathode material in cathode sheets separate with aluminium flake, dry isolated cathode material nickel manganese cobalt acid lithium.
2) quality of lithium, cobalt, aluminium, nickel and the each element of manganese in 1 gram of cathode material that mensuration reclaims.
3) taking the nickel manganese cobalt acid lithium waste material that reclaims as main raw material(s), according to LiMn
1/3ni
1/3co
1/3o
2the mass ratio of nickel, manganese, cobalt and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplement lithium carbonate, manganese dioxide and nickel hydroxide, utilize ultrasonic wave to make material disintegrating, compound is first calcined 6h under 600 DEG C of temperature conditions, after cooling, grind 1h, and then at 910 DEG C, calcination time is 15h, can obtain the LiMn that 0.2 multiplying power discharging capacity is 153mAh/g
1/3ni
1/3co
1/3o
2ternary cathode material.
Embodiment 4
The present embodiment cobalt acid lithium leftover pieces for producing in battery production process to be processed.The recycling of the present embodiment waste lithium ion battery cathode material, in the method for preparing cathode material for lithium ion battery, comprises the following steps:
1) by ultrasonic wave, the cathode material in battery production leftover pieces is split away off from aluminium collector sheet, then through screening, cathode material is separated with aluminium collector sheet, dry isolated cathode material cobalt acid lithium.
2) quality of lithium, cobalt, aluminium, nickel and the each element of manganese in 1 gram of cathode material that mensuration reclaims.
3) taking the cobalt acid lithium waste material that reclaims as main raw material(s), according to cobalt acid lithium (LiCoO
2) mass ratio of cobalt and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplementing lithium carbonate, ball milling 10h fully mixes material.Compound is first calcined 5h under 600 DEG C of temperature conditions, grind 1h, and then calcination time is 20h at 920 DEG C after cooling, can obtain cobalt acid lithium cathode material.
Embodiment 5
The present embodiment LiMn2O4 leftover pieces for producing in battery production process to be processed.The recycling of the present embodiment waste lithium ion battery cathode material, in the method for preparing cathode material for lithium ion battery, comprises the following steps:
1) by ultrasonic wave, the cathode material in battery production leftover pieces is split away off from aluminium collector sheet, then through screening, cathode material is separated with aluminium collector sheet, dry isolated cathode material LiMn2O4.
2) quality of lithium, cobalt, aluminium, nickel and the each element of manganese in 1 gram of cathode material that mensuration reclaims.
3) taking the LiMn2O4 waste material that reclaims as main raw material(s), according to LiMn2O4 (LiMn
2o
4) mass ratio of manganese and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplementing lithium carbonate, ball milling 10h fully mixes material.Compound is first calcined 5h under 650 DEG C of temperature conditions, grind 1h, and then calcination time is 10h at 850 DEG C, can obtain LiMn2O4 cathode material after cooling.
Embodiment 6
The present embodiment nickel manganese cobalt acid lithium leftover pieces for producing in battery production process to be processed.The recycling of the present embodiment waste lithium ion battery cathode material, in the method for preparing cathode material for lithium ion battery, comprises the following steps:
1) cathode material that uses the way of scrubbing that lithium battery is produced in leftover pieces separates with aluminium flake, dry isolated cathode material nickel manganese cobalt acid lithium.
2) quality of lithium, cobalt, aluminium, nickel and the each element of manganese in 1 gram of cathode material that mensuration reclaims.
3) taking the nickel manganese cobalt acid lithium waste material that reclaims as main raw material(s), according to LiMn
1/3ni
1/3co
1/3o
2the mass ratio of nickel, manganese, cobalt and lithium in molecular formula, in the cathode material of above-mentioned recovery, supplement lithium carbonate, manganese dioxide and nickel hydroxide, utilize ultrasonic wave to make material disintegrating, compound is first calcined 6h under 600 DEG C of temperature conditions, after cooling, grind 1h, and then at 910 DEG C, calcination time is 15h, can obtain LiMn
1/3ni
1/3co
1/3o
2ternary cathode material.
Embodiment 7
The waste and old lithium ion battery that the present invention will reclaim is to collect from the market the battery that obtains cathode material and be mainly cobalt acid lithium and nickel manganese cobalt acid lithium.The recycling of the present embodiment waste lithium ion battery cathode material is in the method for preparing cathode material for lithium ion battery, and it comprises the steps:
1) in anhydrous glove box, split battery, the shell of old and useless battery is opened, the cathode sheets of battery is separated from battery, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, wash away electrolyte with dimethyl carbonate, refilter, collect cathode sheets.Cathode sheets is put into water after taking out, and by ul-trasonic irradiation, cobalt acid lithium is separated with aluminium flake with nickel manganese cobalt acid lithium cathode material, then sieves cathode material is separated with aluminium flake with sub-sieve, dry isolated cathode material cobalt acid lithium and nickel manganese cobalt acid lithium.
2) in 1 gram of cathode material that mensuration reclaims, the quality of lithium, cobalt, aluminium, nickel and the each element of manganese is respectively 0.075,0.33,0.0015,0.12 and 0.11 gram.In the waste material reclaiming, the content of aluminium is very low, but the content of nickel manganese is higher, therefore utilizes this reclaimed materials to prepare molecular formula for LiNi
1/3co
1/3mn
1/3o
2nickle cobalt lithium manganate ternary cathode material.
3) taking the cobalt acid lithium that reclaims and nickel manganese cobalt acid lithium waste material as main raw material(s), according to LiNi
1/3co
1/3mn
1/3o
2in the mass ratio of each element, in the cathode material of above-mentioned recovery, supplement lithium carbonate, manganese dioxide and nickel hydroxide.Ball milling 10h fully mixes material.Compound is first calcined 5h under 700 DEG C of temperature conditions, grind 1h, and then calcination time is 10h at 900 DEG C, can obtain the LiNi that 0.2 multiplying power discharging capacity is 155mAh/g after cooling
1/3co
1/3mn
1/3o
2ternary cathode material.
Claims (6)
1. a method of preparing cathode material for lithium ion battery, is characterized in that, comprises the following steps:
A, cathode material or the lithium ion battery isolated in waste and old lithium ion battery cathode sheets are produced the cathode material in leftover pieces;
B, measure the shared mass ratio of each useful element in isolated cathode material, according to the raw-material element mass ratio of preparing cathode material for lithium ion battery, by calculate in isolated cathode material, add the compound of not enough element reach the stoichiometric proportion of object, then prepare cathode material for lithium ion battery.
2. method according to claim 1, it is characterized in that, in step a, the described cathode material of isolating in waste and old lithium ion battery cathode sheets is: in water-less environment, the shell of old and useless battery is opened, isolate cathode sheets wherein, cathode sheets is soaked in dimethyl carbonate, the contained electrolyte impurity of cathode sheets is dissolved in dimethyl carbonate, refilter, collect cathode sheets, again by ultrasonic wave or scrub the cathode material making in cathode sheets and split away off from aluminium collector sheet, through screening, cathode material is separated with aluminium collector sheet again, obtain cathode material.
3. method according to claim 1, it is characterized in that, in step a, described isolate the cathode material that lithium ion battery produces in leftover pieces and be: by ultrasonic wave or scrub the cathode material that lithium ion battery is produced in leftover pieces and split away off from aluminium collector sheet, through screening, cathode material is separated with aluminium collector sheet again, obtain cathode material.
4. method according to claim 1, it is characterized in that, described step b prepare cathode material for lithium ion battery be by isolated cathode material and add institute not enough element compound through pulverize then mix, pass through high temperature solid-state method again make cathode material for lithium ion battery.
5. method according to claim 4, is characterized in that, described pulverizing is that ball milling or ultrasonic wave are pulverized.
6. method according to claim 4, it is characterized in that, described high temperature solid-state method makes cathode material for lithium ion battery again, that the material mixing is calcined, each calcining heat is 600 DEG C～920 DEG C, calcination time is 5-20 hour, obtains thus cathode material for lithium ion battery.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104600392A (en) * | 2015-01-30 | 2015-05-06 | 湖南省正源储能材料与器件研究所 | Method for recovering electrolyte of waste lithium ion battery |
| CN104659437A (en) * | 2015-02-04 | 2015-05-27 | 广州鹏辉能源科技股份有限公司 | Method for efficiently recycling waste battery current collector |
| CN104852062A (en) * | 2015-02-04 | 2015-08-19 | 广州鹏辉能源科技股份有限公司 | A waste lithium-manganese dioxide battery material recycling method |
| CN104953199A (en) * | 2015-05-13 | 2015-09-30 | 中国科学院过程工程研究所 | Metal doping LiMn(1-x-y)NixCoyO2 compounded by lithium ion battery positive electrode waste, as well as preparation method and application of metal doping LiMn(1-x-y)NixCoyO2 |
| CN108336440A (en) * | 2018-01-05 | 2018-07-27 | 深圳市比克电池有限公司 | A kind of waste and old lithium ion battery collector recovery method |
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| EP3477763A1 (en) * | 2017-10-30 | 2019-05-01 | Microvast Power Systems Co., Ltd. | Method for recycling and refreshing cathode material, refreshed cathode material and lithium ion battery |
| CN113213544A (en) * | 2021-03-29 | 2021-08-06 | 中南大学 | Method for regenerating electrode by using waste lithium battery and leaching residues |
| CN116706050A (en) * | 2023-08-07 | 2023-09-05 | 江门市科恒实业股份有限公司 | Medium-low nickel monocrystal ternary positive electrode material, preparation method thereof and battery |
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