CN104112849A - Light metal element-doped ternary lithium ion battery positive electrode material and synthesis method thereof - Google Patents
Light metal element-doped ternary lithium ion battery positive electrode material and synthesis method thereof Download PDFInfo
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- CN104112849A CN104112849A CN201410363706.4A CN201410363706A CN104112849A CN 104112849 A CN104112849 A CN 104112849A CN 201410363706 A CN201410363706 A CN 201410363706A CN 104112849 A CN104112849 A CN 104112849A
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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
- 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
- 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
-
- 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
Abstract
The invention relates to a light metal element-doped ternary lithium ion battery positive electrode material and a synthesis method thereof. The method comprises the following steps: (1) uniformly mixing lithium salt, nickel salt, manganese salt, cobalt salt and a combustion improver, and preparing for calcination; (2) heating the obtained mixture in an air atmosphere to obtain a precursor; (3) naturally cooling the precursor in air and grinding uniformly; and (4) calcining the powder to obtain a powder material; and naturally cooling to room temperature, and grinding in a ball mill to obtain the lithium-doped ternary lithium ion battery positive electrode material. According to the light metal element-doped ternary lithium ion battery positive electrode material, the prepared positive electrode material has uniform particles and good crystallization property; the layered positive electrode material has relatively good electrochemical properties such as high specific capacity and good cycle performance; the positive electrode material is suitable for large-scale production and can be used as a power lithium ion battery positive electrode material.
Description
Technical field
The invention belongs to technical field of lithium ion, be specifically related to a kind of light metal element doping ternary anode material for lithium-ion batteries and synthetic method thereof.
Background technology
Along with the exhaustion day by day of fossil energy, energy problem becomes the focus that people pay close attention to day by day.At present, the new material of finding alternative new forms of energy and can be used for energy storage has become people and has carried out one of emphasis of scientific research.Since coming out, just received great concern as the lithium ion battery of new forms of energy, it is high with voltage, capacity large, memory-less effect and the life-span is long etc. that advantage is widely used in the vehicles such as the electronic products such as mobile phone, digital camera and notebook computer and electric motor car and hybrid electric vehicle.At present, study the more lithium inorganic salts positive electrode that contains and have 4 kinds: cobalt acid lithium (LiCoO
2); Lithium nickelate (LiNiO
2); LiMn2O4 (LiMn
2o
4); LiFePO4 (LiFePO
4).Wherein, the business-like positive electrode of success has cobalt acid lithium, LiMn2O4 and LiFePO4.LiCoO
2cost of material higher, LiMn2O4 cyclical stability is poor and specific discharge capacity is little, is difficult to meet the requirement of lithium-ion-power cell.And LiFePO
4exist theoretical and actual specific capacity is little, and the shortcoming such as poorly conductive, make it be difficult to carry out large-scale commercial applications application.And ternary LiNi
1/3co
1/3mn
1/3o
2positive electrode has been assembled the advantage of cobalt acid lithium, LiMn2O4 and three kinds of positive electrodes of lithium nickelate, i.e. high-energy, and high power capacity, high security etc., charge and discharge platform is close with cobalt acid lithium, is considered to most possible substituting cobalt acid lithium and one of business-like positive electrode.
Although can synthesize the LiNi of stratiform by high temperature solid phase synthesis and coprecipitation
1/3co
1/3mn
1/3o
2, but due to stratiform LiNi
1/3co
1/3mn
1/3o
2positive electrode is powder body material, and granule-morphology, particle diameter and the distribution thereof of its bulk density and powder are closely related; Due to preparation method and synthesis condition, structure, pattern and the chemical property on anode material for lithium-ion batteries has important impact again, therefore, and for stratiform LiNi
1/3co
1/3mn
1/3o
2research not only in preparation method, innovate, also to do at the aspect such as finishing, morphology Control deep research.Stratiform LiNi
1/3co
1/3mn
1/3o
2shortcoming mainly: Li (Ni-Co-Mn) O
2this has problems in fillibility.
For the LiNi of the above stratiform
1/3co
1/3mn
1/3o
2the shortcoming that positive electrode exists, need to provide a kind of low price, and cycle performance is good, low and high temperature better performances, the doping ternary anode material for lithium-ion batteries that energy density is higher.
In laboratory for the synthesis of LiNi
1/3co
1/3mn
1/3o
2the method of positive electrode has hydro thermal method, sol-gel process, coprecipitation, spray drying process, solid phase method etc.
Summary of the invention
The object of the invention is for LiNi
1/3co
1/3mn
1/3o
2material existing problems itself, and existing preparation method's deficiency, correspondingly propose following solution:
1, to LiNi
1/3co
1/3mn
1/3o
2material carries out lithium ion doped modification, has reduced the mixing of lithium nickel, and material capacity is further improved.
2, provide a kind of synthetic method of lithium doping ternary anode material for lithium-ion batteries: adopt improved Rheological Phase Method, in process of lapping, add deionized water and/or ethanol, make to grind more full and uniform.In addition, in calcination process, adding citric acid, oxalic acid, sucrose, urea etc. is combustion adjuvant, promotes that burning is more complete, can obtain the stratified material of complete in crystal formation at lower temperature.
Another object of the present invention is to provide the preparation method of lithium doping ternary anode material for lithium-ion batteries.
According to technical scheme provided by the invention, described polynary positive pole material of lithium ion cell, feature is: the chemical general formula of described positive electrode is Li (Ni
1/3co
1/3mn
1/3)
1-xli
xo
2, wherein 0<x≤0.20.
Feature is to adopt following processing step:
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and combustion adjuvant 1+X in molar ratio: 1/3 (1-X): 1/3 (1-X): 1/3 (1-X): 1 takes, wherein 0<x≤0.20, after levigate in mortar respectively, mix, add again appropriate solvent, continue to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 60~160 DEG C, and the time is 8~20 hours;
(3) calcination: the desiccant gel body obtaining obtains presoma 400~600 DEG C of pre-burnings after 4~8 hours, and presoma naturally cools to room temperature, in grinding in ball grinder 2 hours; At 700~950 DEG C, calcine 10~25 hours again, again on ball mill, grind 2 hours after naturally cooling to room temperature after calcining, obtain described lithium doping ternary anode material for lithium-ion batteries.
Further, described lithium salts is one or more the mixture in lithium acetate, lithium nitrate, lithium carbonate, lithium hydroxide;
Further, described nickel salt is one or more the mixture in nickel acetate, nickel nitrate, nickelous sulfate;
Further, described cobalt salt is one or more the mixture in cobalt nitrate, cobalt acetate, cobaltous sulfate;
Further, described manganese salt is one or more the mixture in manganese sulfate, manganese nitrate, manganese acetate;
Further, described combustion adjuvant is one or more the mixture in citric acid, oxalic acid, sucrose, urea etc.;
Further, described solvent is deionized water and/or ethanol.
Tool of the present invention has the following advantages:
(1) not only specific discharge capacity is high for lithium doping ternary anode material for lithium-ion batteries of the present invention, and cyclical stability is good, and low and high temperature performance is taken into account, and energy density is higher, can meet the requirement of electrokinetic cell.
(2) cost of material is low, and its synthesis technique is simple, is convenient to large-scale industrial production, and degree of being practical is high.
Brief description of the drawings
The Electrochemical Characterization result of the each embodiment of Fig. 1 and comparative example institute prepared material.
Fig. 2 is the XRD phenogram of the prepared positive electrode of the present invention, and wherein curve a, b, c are respectively comparative example Li (Ni
1/3co
1/3mn
1/3) O
2, embodiment mono-Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2, embodiment five Li
1?
1(Ni
1/3co
1/3mn
1/3)
0?
9o
2
Fig. 3 is the prepared Li of the embodiment of the present invention one
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2sEM collection of illustrative plates.
Fig. 4 is the prepared Li of the embodiment of the present invention five
1?
1(Ni
1/3co
1/3mn
1/3)
0?
9o
2sEM collection of illustrative plates.
Fig. 5 be positive electrode of the present invention in 2.5~4.6V voltage range, the cyclic curve figure under 25 DEG C, 0.2C electric current, wherein curve a, b, c are respectively comparative example Li (Ni
1/3co
1/3mn
1/3) O
2, embodiment mono-Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2, embodiment five Li
1?
1(Ni
1/3co
1/3mn
1/3)
0?
9o
2.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
Embodiment mono-Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and citric acid 1.02: 0.98/3: 0.98/3 in molar ratio: take at 0.98/3: 1, after levigate in mortar respectively, mix, adding appropriate amount of deionized water is solvent again, continue to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 60 DEG C, and the time is 20 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 400 DEG C of pre-burnings after 8 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 950 DEG C, calcine 10 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2ternary anode material for lithium-ion batteries.
The positive electrode that the present embodiment is obtained carries out XRD, SEM and detects, and result is respectively as shown in the curve b of Fig. 2 and Fig. 3.The abscissa of Fig. 2 is sweep limits 2 θ (10~90 °), ordinate is the intensity at peak, can from the curve b of Fig. 2, find out, the division at peak is obvious, 006/102 and 108/110 liang of group peak division is more clear, shows that positive electrode is the hexagonal layer structure of high-sequential.The times magnification of Fig. 3 is 50,000 times, and as can be seen from Figure 3, the particle of positive electrode is more tiny, and crystallinity is better, distribution uniform.
Curve b in Fig. 5 be this material in 2.5~4.6V voltage range, the cycle performance curve under 25 DEG C, 0.2C, the capacity after 50 circulations and capability retention 179.0mAh/g and 93.1% respectively.
Embodiment bis-Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and sucrose 1: 0.98/3: 0.98/3 in molar ratio: take at 0.98/3: 1, after levigate in mortar respectively, mix, adding appropriate amount of deionized water is solvent again, continues to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 80 DEG C, and the time is 15 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 500 DEG C of pre-burnings after 6 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 850 DEG C, calcine 20 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li
1?
02(Ni
1/3co
1/3mn
1/3)
0?
98o
2ternary anode material for lithium-ion batteries.
Embodiment tri-Li
1?
05(Ni
1/3co
1/3mn
1/3)
0?
95o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and citric acid 1.05: 0.95/3: 0.95/3 in molar ratio: take at 0.95/3: 0, after levigate in mortar respectively, mix, adding appropriate absolute ethyl alcohol is solvent again, continue to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 100 DEG C, and the time is 12 hours;
(3) calcination: obtain gelinite and obtain presoma 550 DEG C of pre-burnings after 6 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, then at 850 DEG C, calcines 20 hours, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li
1?
05(Ni
1/3co
1/3mn
1/3)
0?
95o
2lithium doping ternary anode material for lithium-ion batteries.
Embodiment tetra-Li
1?
05(Ni
1/3co
1/3mn
1/3)
0?
95o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and oxalic acid 1.05: 0.95/3: 0.95/3 in molar ratio: take at 0.95/3: 1, after levigate in mortar respectively, mix, adding appropriate absolute ethyl alcohol is solvent again, continues to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 120 DEG C, and the time is 8 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 600 DEG C of pre-burnings after 4 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 750 DEG C, calcine 25 hours again, after calcining, naturally cool to after room temperature again and to grind 2 hours asking on grinding machine, obtaining molecular formula is Li
1?
05(Ni
1/3co
1/3mn
1/3)
0?
95o
2lithium doping ternary anode material for lithium-ion batteries.
Embodiment five Li
1?
1(Ni
1/3co
1/3mn
1/3)
0?
9o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and citric acid 1.1: 0.9/3: 0.9/3 in molar ratio: take at 0.9/3: 1, after levigate in mortar respectively, mix, adding appropriate amount of deionized water is solvent again, continues to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 120 DEG C, and the time is 8 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 500 DEG C of pre-burnings after 8 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 900 DEG C, calcine 15 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li
1?
1(Ni
1/3co
1/3mn
1/3)
0.9o
2lithium doping ternary anode material for lithium-ion batteries.
The positive electrode that the present embodiment is made carries out XRD, SEM and detects, and result is respectively as shown in the curve c of Fig. 2 and Fig. 4.(006) the two groups of peak divisions in/(102) and (108)/(110) obviously, show that positive electrode degree of crystallinity is good, have complete layer structure.Fig. 4 is the SEM figure of this material, shows that the particle of this positive electrode is tiny, is evenly distributed, and is class spherical.
Curve c in Fig. 5 be this material in 2.5~4.6V voltage range, the cycle performance curve under 25 DEG C, 0.2C, the capacity after 50 circulations and capability retention 181.2mAh/g and 92.6% respectively.
Embodiment six Li
1.15(Ni
1/3co
1/3mn
1/3)
0?
85o
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and urea 1.1: 0.85/3: 0.85/3 in molar ratio: take at 0.85/3: 1, after levigate in mortar respectively, mix, adding appropriate absolute ethyl alcohol is solvent again, continues to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 100 DEG C, and the time is 12 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 500 DEG C of pre-burnings after 6 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 850 DEG C, calcine 20 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li
1?
15(Ni
1/3co
1/3mn
1/3)
0?
85o
2lithium doping ternary anode material for lithium-ion batteries.
Comparative example Li (Ni
1/3co
1/3mn
1/3) O
2
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt 1.1: 1/3: 1/3 in molar ratio: 1/3 takes, mix after levigate in mortar respectively, then to add appropriate absolute ethyl alcohol be solvent, continue grinding, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 100 DEG C, and the time is 12 hours;
(3) calcination: get step (2) and obtain gelinite and obtain presoma 500 DEG C of pre-burnings after 6 hours, presoma naturally cools to room temperature, in grinding in ball grinder 2 hours, at 850 DEG C, calcine 20 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2 hours, obtaining molecular formula is Li (Ni
1/3co
1/3mn
1/3) O
2lithium doping ternary anode material for lithium-ion batteries.
Application Example
Positive electrode prepared by each embodiment mixes and is made into slurry in N-methyl pyrrolidone (NMP) with the consumption that carbon black, binding agent PVDF are 8: 1: 1 in mass ratio, then slurry is coated in aluminum foil current collector uniformly, at 80 DEG C, dry, at 18MPa pressure lower sheeting, as anodal, lithium metal is as negative pole, and Celgard2325 makes barrier film, the LiPF that electrolyte is 1mol/L
6solution (solvent is ethylene carbonate: dimethyl carbonate volume ratio is 1: 1 mixed liquor) is assembled into CR2032 type button cell in the glove box of argon gas atmosphere.The CR2032 type button cell of assembling characterizes with charge-discharge test instrument LAND-CT2001A, and discharging and recharging interval is 2.5~4.6V.
Claims (9)
1. low price cation doping ternary anode material for lithium-ion batteries and a synthetic method thereof, is characterized in that: the chemical general formula of described positive electrode is Li (Ni
1/3co
1/3mn
1/3)
1-xli
xo
2, wherein 0<x≤0.20.
2. a preparation method for low price cation doping ternary anode material for lithium-ion batteries, is characterized in that adopting following processing step:
(1) mix: by lithium salts, nickel salt, manganese salt, cobalt salt and combustion adjuvant 1+X in molar ratio: 1/3 (1-X): 1/3 (1-X): 1/3 (1-X): 1 takes, wherein 0<x≤0.20, after levigate in mortar respectively, mix, add again 3~5mL solvent, continue to grind, until mixture is the pasty state of uniform and smooth;
(2) dry: the cement paste mixture of getting step (1) gained is dried in air dry oven, and bake out temperature is 60~160 DEG C, and the time is 8~20 hours;
(3) calcination: obtain precursor and obtain raw powder 400~600 DEG C of pre-burnings after 4~8 hours, raw powder naturally cools to room temperature, in grinding in ball grinder 2-6 hour, at 700~950 DEG C, calcine 10~25 hours again, after naturally cooling to room temperature after calcining, again on ball mill, grind 2-6 hour, obtain described doping ternary anode material for lithium-ion batteries.
3. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described lithium salts is one or more the mixture in lithium acetate, lithium nitrate, lithium carbonate, lithium hydroxide.
4. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described nickel salt is one or more the mixture in nickel acetate, nickel nitrate, nickelous carbonate, nickelous sulfate.
5. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described cobalt salt is one or more the mixture in cobalt nitrate, cobalt acetate, cobalt carbonate, cobaltous sulfate.;
6. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described manganese salt is one or more the mixture in manganese sulfate, manganese nitrate, manganese dioxide, manganese acetate.
7. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described combustion adjuvant is one or more the mixture in citric acid, oxalic acid, sucrose, urea etc.
8. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described solvent is deionized water and/or ethanol.
9. the preparation method of lithium doping ternary anode material for lithium-ion batteries according to claim 2, is characterized in that: described lithium salts, nickel salt, manganese salt, cobalt salt and combustion adjuvant 1+X in molar ratio: 1/3 (1-X): 1/3 (1-X): 1/3 (1-X): 1 takes.
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Cited By (8)
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CN105895866A (en) * | 2014-12-25 | 2016-08-24 | 江南大学 | Light metal doping lithium manganate positive electrode material of lithium ion battery and preparation method of positive electrode material |
CN105895906A (en) * | 2016-05-11 | 2016-08-24 | 双登集团股份有限公司 | Lithium-doped ternary lithium-ion battery positive electrode material and preparation method thereof |
CN105914351A (en) * | 2016-04-14 | 2016-08-31 | 北京晶晶星科技有限公司 | Preparation method of spinel type lithium manganate or lithium nickel manganese oxide |
CN106654255A (en) * | 2016-12-16 | 2017-05-10 | 江南大学 | Aluminum-doped and modified cathode material for high-capacity lithium ion batteries |
CN108832085A (en) * | 2018-06-05 | 2018-11-16 | 山东理工大学 | A kind of method that controllable low-temperature combustion method prepares lithium-rich anode material |
CN109873141A (en) * | 2019-02-19 | 2019-06-11 | 武汉科技大学 | A kind of block structure nickel-cobalt-manganternary ternary anode material and preparation method thereof |
CN110921720A (en) * | 2019-12-03 | 2020-03-27 | 江南大学 | High-voltage lithium ion battery positive electrode material and preparation method thereof |
EP4174025A4 (en) * | 2020-10-06 | 2023-12-27 | Lg Chem, Ltd. | Method for preparing cathode active material for lithium secondary battery and cathode active material prepared thereby |
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