CN109273678A - A kind of regeneration anode material for lithium-ion batteries and preparation method thereof - Google Patents
A kind of regeneration anode material for lithium-ion batteries and preparation method thereof Download PDFInfo
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- CN109273678A CN109273678A CN201810942905.9A CN201810942905A CN109273678A CN 109273678 A CN109273678 A CN 109273678A CN 201810942905 A CN201810942905 A CN 201810942905A CN 109273678 A CN109273678 A CN 109273678A
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- 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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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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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- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
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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
Abstract
The present invention provides a kind of regeneration anode material for lithium-ion batteries, is made of regeneration lithium alloy metals oxide and alumina-coated layer, and the amount of the substance of the alumina-coated layer is the 0.5%~2% of the regeneration lithium alloy metals oxide.Alumina-coated of the invention is uniform, and it is interlaced to constitute uniform network structure, this structure can both prevent contact of the positive electrode with electrolyte and caused by positive electrode dissolution, Li-Al-O fast-ionic conductor compound can be formed again, channel is provided for the transmission of lithium ion, improve the transfer rate of electronics, avoid the inhibition of positive electrode surface impurity ion pair lithium ion insertion and abjection, so the chemical property of regeneration anode material for lithium-ion batteries of the invention is effectively improved, it is advantageously implemented resources circulation recycling.It coats to form alumina-coated layer in addition, a step in air atmosphere may be implemented in preparation method of the invention, simple process reduces cost.
Description
Technical field
The present invention relates to waste and old lithium ion battery recycling fields, more particularly, to a kind of regeneration lithium ion cell positive
Material and preparation method thereof.
Background technique
Lithium ion battery is widely used in the mobile electronic devices such as mobile phone, laptop, video camera, digital camera, by
Gradually instead of Aeronautics and Astronautics, navigation, Medical Devices and military equipment field conventional batteries.In particular with plug-in mixing
The rise of power and pure electric automobile, in the near future, lithium ion battery are expected to dominate market.
The service life of lithium ion battery is about 2~4 years, after lithium ion battery was using 2~4 years in lithium ion battery just
Electrode expansion phenomenon can occur, active material layer structure is caused to block and inactivate, the cycle characteristics of lithium ion battery sharply declines,
The lithium ion battery of consuming will become electron wastes.There is research, it is expected that will reach to the year two thousand twenty dynamic lithium battery learies
32.2Gwh, about 500,000 tons, by 2023, learies were up to 101Gwh, and about 1,160,000 tons, therefore, waste and old power battery recycles
It is extremely urgent.
Using waste and old lithium ion battery as raw material, regeneration synthesis of anode material of lithium-ion battery is a very desirable way
Diameter not only contributes to the pressure for mitigating environment in this way, and the cycling and reutilization of resource may be implemented, and kills two birds with one stone.However by
Contain more impurity element in the positive electrode of GCMS computer again, seriously affects the chemical property of regeneration positive electrode.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of regeneration anode material for lithium-ion batteries and its preparation side
The chemical property of method, the regeneration anode material for lithium-ion batteries is obviously improved.
The present invention provides a kind of regeneration anode material for lithium-ion batteries, by regeneration lithium alloy metals oxide and aluminium oxide
Clad composition, the amount of the substance of the alumina-coated layer are the 0.5%~2% of the regeneration lithium alloy metals oxide.
In above-mentioned technical proposal, the amount of lithium alloy metals oxide alumina-coated and control aluminium oxide will be regenerated, then
It will not lead to very little cladding because of covering amount not exclusively, it is bad so as to cause regeneration positive electrode chemical property；It will not be because
It excessively will appear different degrees of agglomeration so as to cause positive electrode surface for covering amount, the polarization for increasing electrode material is made
With making the chemical property of material be deteriorated.When covering amount is 0.5%~2%, alumina-coated layer is evenly coated, and phase
Mutually staggeredly constitute uniform network structure, this structure can both prevent contact of the positive electrode with electrolyte and caused by anode material
The dissolution of material, and Li-Al-O fast-ionic conductor compound can be formed, channel is provided for the transmission of lithium ion, improves electronics
Transfer rate avoids the inhibition of positive electrode surface impurity ion pair lithium ion insertion and abjection.
Preferably, the regeneration lithium alloy metals oxide is nickel cobalt lithium aluminate.Nickel cobalt lithium aluminate is as lithium ion battery
Positive electrode, it is more excellent than common lithium iron phosphate and nickel cobalt binary composite performance, have more prospect.
Preferably, the general formula of the regeneration anode material for lithium-ion batteries is LiNi0.8Co0.2-xAlxO2@(0.5%~
2%) Al2O3, wherein 0 < x < 0.2.
It is highly preferred that the regeneration anode material for lithium-ion batteries molecular formula is LiNi0.8Co0.15Al0.05O2@(0.5%~
2%) Al2O3.The advantages that tertiary cathode material is high with capacity at this time, good cycling stability, at low cost, and there is good times
Rate performance and high-temperature behavior, it is considered to be most one of the positive electrode of attraction and development prospect.
The present invention also provides the preparation methods of above-mentioned regeneration anode material for lithium-ion batteries, comprising the following steps:
(1) using waste and old lithium ion battery as raw material, the solution A of three kinds of nickeliferous, cobalt, aluminium ions is obtained using conventional method；
(2) adjust nickel in the solution A, cobalt, three kinds of ions of aluminium molar ratio be 0.8:(0.2-x): x, then with hydrogen-oxygen
Change sodium solution and concentrated ammonia liquor is co-precipitated, obtains presoma；
(3) presoma, lithium source and silicon source are mixed, is calcined to get the regeneration lithium ion cell positive material
Material.
In above-mentioned preparation method, presoma, lithium source and silicon source are mixed and calcined, realizes a step of alumina-coated layer
Cladding, relative to existing substep cladding process process simplification.
Preferably, when being co-precipitated in step (2), adjusting pH is 10~11, after reaction, at 100 DEG C~150 DEG C
Under be dried to obtain the presoma.
In above-mentioned technical proposal, within the above range by Coprecipitation control, obtained granular precursor size is controllable,
Good physical performance, stable electrochemical property, favorable reproducibility are conducive to postorder and react.
Preferably, presoma described in step (3), aluminum ions in lithium ion and source of aluminium in the lithium source rub
You are than being 1:(1.1~1.2): (0.01~0.04).
In above-mentioned technical proposal, the amount ratio of strict control presoma, lithium source and silicon source three is conducive to generate target point
The positive electrode of minor, chemical property are more preferable.
Preferably, the lithium source is obtained by recycling waste and old lithium ion battery.
Preferably, source of aluminium is one of aluminium hydroxide, alchlor and aluminum nitrate or a variety of, more preferably hydrogen-oxygen
Change aluminium.
Preferably, in step (3) to be calcined in air atmosphere, temperature is 750 DEG C~800 DEG C, the time is 12~
18h calcines 15h at more preferably 800 DEG C.
In above-mentioned technical proposal, due to controlling presoma, lithium source and the amount ratio and calcination temperature of silicon source three, institute
Can be calcined in air atmosphere, cost has been saved compared with the existing technology.
Regeneration anode material for lithium-ion batteries of the invention is by regeneration lithium alloy metals oxide and alumina-coated layer group
At, and the amount for controlling alumina species be the 0.5%~2% of regeneration lithium alloy metals oxide, at this time alumina-coated layer packet
It covers uniformly, and the interlaced uniform network structure of composition, this structure can both prevent contact of the positive electrode with electrolyte
The dissolution of positive electrode caused by and, and Li-Al-O fast-ionic conductor compound can be formed, for lithium ion transmission provide it is logical
Road improves the transfer rate of electronics, avoids the inhibition of positive electrode surface impurity ion pair lithium ion insertion and abjection,
So the chemical property of regeneration anode material for lithium-ion batteries of the invention is effectively improved, it is advantageously implemented resources circulation
It recycles.It coats to form alumina-coated layer, technique in addition, a step in air atmosphere may be implemented in preparation method of the invention
Simply, cost is reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the XRD diagram that anode material for lithium-ion batteries is regenerated obtained in the embodiment of the present invention 1；
Fig. 2 is the first charge-discharge curve graph that anode material for lithium-ion batteries is regenerated obtained in the embodiment of the present invention 1；
Fig. 3 is the first charge-discharge curve graph of the regeneration positive electrode of uncoated aluminium oxide in the prior art.
Specific embodiment
Combined with specific embodiments below, specific embodiments of the present invention will be described in further detail.Following embodiment
For illustrating the present invention, but it is not intended to limit the scope of the invention.
Embodiment 1
The present embodiment provides a kind of regeneration anode material for lithium-ion batteries, by nickel cobalt lithium aluminate and alumina-coated layer group
At the amount of the substance of the alumina-coated layer is the 1.5% of the nickel cobalt lithium aluminate.The regeneration lithium ion cell positive material
The molecular formula of material is LiNi0.8Co0.15Al0.05O2@1.5%Al2O3。
The present embodiment also provides the preparation method of above-mentioned regeneration anode material for lithium-ion batteries, comprising the following steps:
(1) waste and old lithium ion battery is subjected to alkali leaching, aluminium foil and positive active material is separated, then by positive active material
The pyrolytic 2h at 700 DEG C, then obtained active material will be decomposed and carry out acidleach, acidleach condition is to add under 90 DEG C of heating water baths
Enter 7g/mL sulfuric acid and 10% hydrogen peroxide；
(2) pickle liquor for obtaining upper step removes the metal ion other than three kinds of nickel, cobalt, aluminium ions using extraction, obtains
To only nickeliferous, cobalt, the solution (containing certain impurity) of three metal ion species of aluminium；
(3) solution obtained upper step carries out ICP concentration determination, obtain nickel, cobalt, aluminium ion concentration be respectively
1.4mol/L, 0.2mol/L, 0.05mol/L, then take 20mL raffinate, and addition nickel sulfate, cobaltous sulfate and aluminum sulfate adjust molten
The concentration of nickel ion is 1.6mol/L in liquid, the concentration of cobalt ions is 0.3mol/L, aluminum ions concentration is 0.1mol/L；
(4) 6mol/L sodium hydroxide solution 36mL is prepared, the concentrated ammonia liquor 14mL that volume fraction is 28% is measured, the two is filled
Divide mixing, be added in the mixing salt solution that step obtains and be co-precipitated, adjusting pH is 10~11, after reaction, 120
12h is dried at DEG C, obtains green gel presoma 3.6456g；
(5) by presoma that upper step obtains and 1.8462g lithium hydroxide and 0.0936g aluminium hydroxide, (three's molar ratio is
It 1:1.1:0.03) is sufficiently mixed, calcines 15h at 800 DEG C in air atmosphere to get the regeneration lithium ion cell positive material
Material.
Embodiment 2
The present embodiment provides a kind of regeneration anode material for lithium-ion batteries, by nickel cobalt lithium aluminate and alumina-coated layer group
At the amount of the substance of the alumina-coated layer is the 2% of the nickel cobalt lithium aluminate.The regeneration anode material for lithium-ion batteries
Molecular formula be LiNi0.8Co0.15Al0.05O2@2%Al2O3。
The present embodiment also provides the preparation method of above-mentioned regeneration anode material for lithium-ion batteries, comprising the following steps:
(1) waste and old lithium ion battery is subjected to alkali leaching, aluminium foil and positive active material is separated, then by positive active material
The pyrolytic 2h at 700 DEG C, then obtained active material will be decomposed and carry out acidleach, acidleach condition is to add under 90 DEG C of heating water baths
Enter 7g/mL sulfuric acid and 10% hydrogen peroxide；
(2) pickle liquor for obtaining upper step removes the metal ion other than three kinds of nickel, cobalt, aluminium ions using extraction, obtains
To only nickeliferous, cobalt, the solution (containing certain impurity) of three metal ion species of aluminium；
(3) solution obtained upper step carries out ICP concentration determination, obtain nickel, cobalt, aluminium ion concentration be respectively
1.4mol/L, 0.2mol/L, 0.05mol/L, then take 20mL raffinate, and addition nickel sulfate, cobaltous sulfate and aluminum sulfate adjust molten
The concentration of nickel ion is 1.6mol/L in liquid, the concentration of cobalt ions is 0.3mol/L, aluminum ions concentration is 0.1mol/L；
(4) 6mol/L sodium hydroxide solution 36mL is prepared, the concentrated ammonia liquor 14mL that volume fraction is 28% is measured, the two is filled
Divide mixing, be added in the mixing salt solution that step obtains and be co-precipitated, adjusting pH is 10~11, after reaction, 120
14h is dried at DEG C, obtains green gel presoma 3.6456g；
(5) by presoma that upper step obtains and 1.8462g lithium hydroxide and 0.1248g aluminium hydroxide, (three's molar ratio is
It 1:1.1:0.04) is sufficiently mixed, calcines 16h at 780 DEG C in air atmosphere to get the regeneration lithium ion cell positive material
Material.
Embodiment 3
The present embodiment provides a kind of regeneration anode material for lithium-ion batteries, by nickel cobalt lithium aluminate and alumina-coated layer group
At the amount of the alumina-coated layer substance is the 1% of the nickel cobalt lithium aluminate.The regeneration anode material for lithium-ion batteries
Molecular formula is LiNi0.8Co0.15Al0.05O2@1%Al2O3。
The present embodiment also provides the preparation method of above-mentioned regeneration anode material for lithium-ion batteries, comprising the following steps:
(1) waste and old lithium ion battery is subjected to alkali leaching, aluminium foil and positive active material is separated, then by positive active material
The pyrolytic 2h at 700 DEG C, then obtained active material will be decomposed and carry out acidleach, acidleach condition is to add under 90 DEG C of heating water baths
Enter 7g/mL sulfuric acid and 10% hydrogen peroxide；
(2) pickle liquor for obtaining upper step removes the metal ion other than three kinds of nickel, cobalt, aluminium ions using extraction, obtains
To only nickeliferous, cobalt, the solution (containing certain impurity) of three metal ion species of aluminium；
(3) solution obtained upper step carries out ICP concentration determination, obtain nickel, cobalt, aluminium ion concentration be respectively
1.4mol/L, 0.2mol/L, 0.05mol/L, then take 20mL raffinate, addition nickel sulfate, cobaltous sulfate and aluminum sulfate adjust molten
The concentration of nickel ion is 1.6mol/L in liquid, the concentration of cobalt ions is 0.3mol/L, aluminum ions concentration is 0.1mol/L；
(4) 6mol/L sodium hydroxide solution 36mL is prepared, the concentrated ammonia liquor 14mL that volume fraction is 28% is measured, the two is filled
Divide mixing, be added in the mixing salt solution that step obtains and be co-precipitated, adjusting pH is 10~11, after reaction, 120
12h is dried at DEG C, obtains green gel presoma 3.6456g；
(5) by presoma that upper step obtains and 2.0141g lithium hydroxide and 0.0624g aluminium hydroxide, (three's molar ratio is
It 1:1.2:0.02) is sufficiently mixed, calcines 12h at 800 DEG C in air atmosphere to get the regeneration lithium ion cell positive material
Material.
Performance test
X-ray diffraction analysis test, XRD spectrum are carried out to the regeneration anode material for lithium-ion batteries that embodiment 1 obtains
As shown in Figure 1, wherein (003) peak intensity is 19327, (104) peak intensity is 13013, then the intensity at (003) peak and (104) peak
Ratio is 1.485.
(003) intensity rate of diffraction maximum and (104) diffraction maximum reflects the mixing situation of lithium and nickel, and typically larger than 1.2.
When I (003)/(104) > 1.3 I, show that the material structure degree of order is higher.And in embodiment 1 (003) peak and (104) peak it is strong
Spending ratio is 1.485 > 1.3, shows that the degree of order of material structure at this time is very high, then performance is also more excellent.
In addition, first charge-discharge test is carried out to the regeneration anode material for lithium-ion batteries that embodiment 1 obtains, as a result as schemed
Shown in 2.Figure it is seen that the positive electrode initial charge specific capacity be 154mAh/g, specific discharge capacity 150mAh/g,
First charge-discharge efficiency is 97.4%.And the first charge-discharge of the regeneration positive electrode of alumina-coated is not carried out in the prior art
Curve graph is as shown in figure 3, wherein initial charge specific capacity is 128mAh/g, specific discharge capacity 123mAh/g, first charge-discharge
Efficiency is 96%, it is seen that regeneration anode material for lithium-ion batteries chemical property of the invention is improved.
In conclusion the regeneration anode material for lithium-ion batteries that the present invention is prepared, greatly improves its internal junction
Structure reduces the interface impedance of regeneration positive electrode, improves the chemical property of regeneration positive electrode, is conducive to mitigate environment
Pressure realizes that resources circulation recycles, has broad application prospects.
Finally, method of the invention is only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of regeneration anode material for lithium-ion batteries, which is characterized in that by regeneration lithium alloy metals oxide and aluminium oxide packet
Coating composition, the amount of the substance of the alumina-coated layer are the 0.5%~2% of the regeneration lithium alloy metals oxide.
2. a kind of regeneration anode material for lithium-ion batteries according to claim 1, which is characterized in that the regeneration lithium alloy
Metal oxide is nickel cobalt lithium aluminate.
3. a kind of regeneration anode material for lithium-ion batteries according to claim 2, which is characterized in that the regeneration lithium ion
The general formula of cell positive material is LiNi0.8Co0.2-xAlxO2@(0.5%~2%) Al2O3, wherein 0 < x < 0.2；Preferably
LiNi0.8Co0.15Al0.05O2@(0.5%~2%) Al2O3。
4. the preparation method of regeneration anode material for lithium-ion batteries described in claim 2 or 3, which is characterized in that including following
Step:
(1) using waste and old lithium ion battery as raw material, the solution A of three kinds of nickeliferous, cobalt, aluminium ions is obtained using conventional method；
(2) adjust nickel in the solution A, cobalt, three kinds of ions of aluminium molar ratio be 0.8:(0.2-x): x, then with sodium hydroxide
Solution and concentrated ammonia liquor are co-precipitated, and presoma is obtained；
(3) presoma, lithium source and silicon source are mixed, is calcined to get the regeneration anode material for lithium-ion batteries.
5. the preparation method according to claim 4, which is characterized in that when being co-precipitated in step (2), adjusting pH is 10
~11, after reaction, it is dried to obtain the presoma at 100 DEG C~150 DEG C.
6. the preparation method according to claim 4, which is characterized in that presoma described in step (3), in the lithium source
Aluminum ions molar ratio in lithium ion and source of aluminium is 1:(1.1~1.2): (0.01~0.04).
7. preparation method according to claim 6, which is characterized in that the lithium source is recycling waste and old lithium ion battery institute
?.
8. preparation method according to claim 6, which is characterized in that source of aluminium is aluminium hydroxide, alchlor and nitre
One of sour aluminium is a variety of, preferably aluminium hydroxide.
9. preparation method according to claim 6, which is characterized in that be calcined in air atmosphere in step (3),
Temperature is 750 DEG C~800 DEG C, and the time is 12~18h.
10. preparation method according to claim 9, which is characterized in that be to calcine 15h at 800 DEG C in step (3).
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| CN110010990A (en) * | 2019-03-27 | 2019-07-12 | 欣旺达电子股份有限公司 | There is the method for the nickel-cobalt-manganese ternary material of alumina-coated layer using retired lithium ion battery as raw material preparation |
| CN111009641A (en) * | 2019-10-31 | 2020-04-14 | 浙江锋锂新能源科技有限公司 | Long-cycle-life mixed solid-liquid electrolyte lithium storage battery and preparation method thereof |
| CN111129447A (en) * | 2019-10-31 | 2020-05-08 | 浙江锋锂新能源科技有限公司 | Ternary positive electrode material for long-cycle-life lithium storage battery and preparation method thereof |
| CN111009641B (en) * | 2019-10-31 | 2022-02-22 | 浙江锋锂新能源科技有限公司 | Long-cycle-life mixed solid-liquid electrolyte lithium storage battery and preparation method thereof |
| CN112701259A (en) * | 2020-12-22 | 2021-04-23 | 安普瑞斯（南京）有限公司 | Positive electrode material, preparation method thereof, electrode and battery |
| CN112701259B (en) * | 2020-12-22 | 2022-05-20 | 安普瑞斯（南京）有限公司 | Positive electrode material, preparation method thereof, electrode and battery |
| CN114899407A (en) * | 2022-07-14 | 2022-08-12 | 中创新航科技股份有限公司 | Method for regenerating anode material |
| CN114899407B (en) * | 2022-07-14 | 2022-09-16 | 中创新航科技股份有限公司 | Method for regenerating anode material |
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Application publication date: 20190125 |