CN105529456A - Industrial production method for 30C-rate lithium nickel cobalt manganese oxide NCM523 ternary cathode material - Google Patents
Industrial production method for 30C-rate lithium nickel cobalt manganese oxide NCM523 ternary cathode material Download PDFInfo
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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
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- 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
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Abstract
The present invention discloses an industrial production method for a 30C-rate lithium nickel cobalt manganese oxide NCM523 ternary cathode material, and relates to the technical field of preparation of lithium ion battery cathode materials. The method comprises the following steps: matching a nickel cobalt manganese hydroxide precursor, a lithium source and a metal M compound according to a certain proportion; mixing uniformly and then calcining; cooling and then crushing until D50 is 5.0-11.0 microns, to obtain LiNixCoyMn1-x-yMaO2, wherein x is not less than 0.45 and not greater than 0.55, and y is not less than 0.15 and not greater than 0.25 . By controlling the particle size distribution and crystal structure of the nickel cobalt manganese hydroxide precursor and introducing a metal element with a larger ionic radius and capable of stabilizing the crystal structure of the materials in a lithium source mixing stage, a bulk phase-doped lithium nickel cobalt manganese oxide dynamic ternary cathode material with a special particle size is prepared through calcination.
Description
Technical field
The invention belongs to lithium ion secondary battery anode material field, be specifically related to a kind of high magnification nickle cobalt lithium manganate power tertiary cathode material LiNi
xco
ymn
1-x-ym
ao
2industrialized process for preparing.
Background technology
Lithium-ion-power cell main application fields has electric tool, electric bicycle, new-energy automobile etc.Wherein, field of power tools requires that lithium-ion-power cell has higher high rate performance, cycle performance.Lithium-ion-power cell mainly comprises positive electrode, negative material, electrolyte and barrier film etc., and wherein positive electrode is the key influence factor of the performance such as energy density and useful life of battery.
Power battery anode material mainly comprises LiFePO4, LiMn2O4, nickle cobalt lithium manganate etc.LiFePO4 good cycle, but poor performance at low temperatures, energy density are low, lot stability is poor; LiMn2O4 is cheap, but there is the shortcomings such as energy density low and high temperature cycle performance difference; Nickle cobalt lithium manganate has and higher rolls density, specific capacity, more excellent high temperature performance, lower cost, gains great popularity.
But in Chinese market, business-like nickel-cobalt lithium manganate material also existed following shortcoming in the past, and high rate performance is poor, simulated battery was tested, and 1C/0.25C is 0.91,2C/0.25C is 0.83, is difficult to meet electrokinetic cell and works under higher-wattage; In addition, also there is material structure instability, in charge and discharge process, easy structural collapse, causes cycle performance poor.As Chinese patent Authorization Notice No. CN102709544B discloses a kind of nickel cobalt lithium manganate and preparation method thereof, this nickel cobalt lithium manganate chemical formula is Li (Ni
xco
ymn
1-x-y) O
2.Its preparation method is: after soluble nickel salt, cobalt salt, manganese salt being mixed with complexing agent; hydro-oxidation sodium precipitation reagent reacts; obtain the complex hydroxide of nickel cobalt manganese; then this complex hydroxide, water-soluble high-molecular compound and Li source compound are placed in the stirred reactor with Vltrasonic device; spraying dry is carried out ultrasound-enhanced being uniformly mixed in process; obtain the precursor of nickle cobalt lithium manganate; under certain atmosphere protection; precursor, through once sintered, obtains nickle cobalt lithium manganate product.
Summary of the invention
The technical problem to be solved in the present invention solves above-mentioned the deficiencies in the prior art, provides the industrialized preparing process of a kind of high magnification, constitutionally stable nickle cobalt lithium manganate NCM523 tertiary cathode material.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material, comprises the following steps:
1) be that nickel cobalt manganese hydroxide precursor, the compound of metallic element M, the lithium source of 4.0 ~ 10.0 μm mixes by D50, the quality of three is followed successively by 2000:(500 ~ 1000): (1.0 ~ 5), wherein Li:Me:M=(1.02 ~ 1.06): 1.0:(0 ~ 0.005);
2) sintered at 850 ~ 1000 DEG C of temperature by the mixture after Homogeneous phase mixing, sintering time remains on 4 ~ 24h, continues to pass into air in sintering process;
3) mixture step 2 obtained carry out cooling down, pass into air while cooling;
4) cooled mixture is carried out fragmentation, be crushed to D50 between 3.0 ~ 11.0 μm.
Preferred as technique scheme, described lithium source can be lithium hydroxide, lithium carbonate one or both.
As technique scheme further preferably, the device sintered mixture in step 2 is roller kilns, and described roller kilns are 1 ~ 3 DEG C/min to the programming rate of mixture.
The present invention by controlling the particle size distribution of nickel cobalt manganese hydroxide precursor, crystalline structure, lithium source mix stages are introduced can the larger metallic element of the ionic radius of stabilizing material crystal structure, and burning till the nickle cobalt lithium manganate power tertiary cathode material preparing bulk phase-doped particular particle size, the nickle cobalt lithium manganate power tertiary cathode material of preparation has excellent high rate performance, cycle performance.
Accompanying drawing explanation
Fig. 1 is high magnification LiNi in the embodiment of the present invention 1
0.5co
0.2mn
0.3al
0.002o
2scanning electron microscope (SEM) photograph;
Fig. 2 is high magnification LiNi in embodiment 1
0.5co
0.2mn
0.3al
0.002o
2with LiNi in comparative example 1
0.5co
0.2mn
0.3o
2high rate performance discharge curve comparison diagram;
Fig. 3 is 25 DEG C, 1CLiNi in the embodiment of the present invention 1
0.5co
0.2mn
0.3al
0.002o
250 weeks cyclic curves and comparative example 1 in LiNi
0.5co
0.2mn
0.3o
2comparison diagram.
Fig. 4 is the high magnification LiNi in the embodiment of the present invention 1
0.5co
0.2mn
0.3al
0.002o
2liNi in AC impedance curve and comparative example 1
0.5co
0.2mn
0.3o
2comparison diagram.
Embodiment
Following examples are all for the nickel cobalt manganese hydroxide precursor of 2 tons of weights, and high temp sintering device is roller kilns, and the air inflow of roller kilns is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h, but be not construed as limiting the invention, those skilled in the art, according to basic thought of the present invention, can make various amendment or improvement, only otherwise depart from basic thought of the present invention, all within the scope of the invention.
Embodiment 1
1) be 3.0 ~ 5.0 μm of nickel cobalt manganese hydroxide precursor accurate weighings by D50, amount to about 2 tons and add high efficient mixer, press accurate weighing 0.8 ton of lithium carbonate, about 2.6KgZrO simultaneously
2add high efficient mixer to mix, wherein Li:Me:Zr=1.05:1.0:0.001;
2) mixture step 1 prepared loads saggar and enters in roller kilns, the speed entering roller kilns remains on 0.8 ~ 2.0m/h, with 2 DEG C/min ramp to 900 DEG C, and is incubated 12h, continue to pass into air in the process sintered and be incubated, air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h.
3) material enters by air-cooled, water-cooled cooling behind cooling area, and rate of temperature fall is 5.0 DEG C/min, and air inflow is identical with the temperature rise period with discharge capacity.
4) after coming out of the stove, first through coarse crushing, then mixture fine powder is broken to D50 between 3.0 ~ 7.0 μm.Finally obtain LiNi
0.5co
0.2mn
0.3zr
0.001o
2.
Embodiment 2:
1) be 5.0 ~ 6.0 μm of nickel cobalt manganese hydroxide precursor accurate weighings by D50, amount to about 2 tons and add high efficient mixer, press accurate weighing 0.8 ton of lithium carbonate, about 4.5KgAl simultaneously
2o
3add high efficient mixer to mix, wherein Li:Me:Al=1.03:1.0:0.004;
2) mixture step 1 prepared loads saggar and enters in roller kilns, the length of roller kilns is 30 ~ 50m, the speed entering roller kilns remains on 0.8 ~ 2.0m/h, with 2.0 DEG C/min ramp to 940 DEG C, and under this insulation, be incubated 15h, continue to pass into air in the process sintered and be incubated, air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h.
3) material enters by air-cooled, water-cooled cooling behind cooling area, and rate of temperature fall is 5.0 DEG C/min, and air inflow is identical with the temperature rise period with discharge capacity.
4) after coming out of the stove, first through coarse crushing, then mixture fine powder is broken to D50 between 6.0 ~ 9.0 μm.Finally obtain Ni
0.5co
0.2mn
0.3al
0.004o
2.Its electron-microscope scanning figure as shown in Figure 1.
Embodiment 3
1) be 5.0 ~ 6.0 μm of nickel cobalt manganese hydroxide precursor accurate weighings by D50, amount to about 2 tons and add high efficient mixer, press accurate weighing 0.95 ton of lithium carbonate, about 3.5KgTiO simultaneously
2add high efficient mixer to mix, wherein Li:Me:Zr=1.05:1.0:0.001;
2) mixture step 1 prepared loads saggar and enters in roller kilns, the speed entering roller kilns remains on 0.8 ~ 2.0m/h, with 2 DEG C/min ramp to 900 DEG C, and is incubated 12h, continue to pass into air in the process sintered and be incubated, air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h.
3) material enters by air-cooled, water-cooled cooling behind cooling area, and rate of temperature fall is 5.0 DEG C/min, and air inflow is identical with the temperature rise period with discharge capacity.
4) after coming out of the stove, first through coarse crushing, then mixture fine powder is broken to D50 between 9.0 ~ 10.0 μm.Finally obtain LiNi
0.5co
0.2mn
0.3ti
0.002o
2.
Embodiment 4
1) by D50 be 5.0 ~ 6.0 μm of nickel cobalt manganese hydroxide precursor accurate weighings, amount to about 2 tons and add high efficient mixer, add high efficient mixer and mix by accurate weighing 0.8 ton of lithium carbonate, about 1.7KgMgO, wherein Li:Me:Zr=1.05:1.0:0.002 simultaneously;
2) mixture step 1 prepared loads saggar and enters in roller kilns, the speed entering roller kilns remains on 0.8 ~ 2.0m/h, with 2 DEG C/min ramp to 890 DEG C, and is incubated 12h, continue to pass into air in the process sintered and be incubated, air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h.
3) material enters by air-cooled, water-cooled cooling behind cooling area, and rate of temperature fall is 5.0 DEG C/min, and air inflow is identical with the temperature rise period with discharge capacity.
4) after coming out of the stove, first through coarse crushing, then mixture fine powder is broken to D50 between 6.0 ~ 8.0 μm.Finally obtain LiNi
0.5co
0.2mn
0.3mg
0.002o
2.
Comparative example 1:
1) by the nickel cobalt manganese hydroxide precursor of D50 at 11.0 ~ 12.0 μm, adopt automatic weighing system accurate weighing, amount to about 2 tons and add high efficient mixer, simultaneously accurate weighing about 0.8 ton of lithium carbonate adds high efficient mixer and mixes, wherein Li:Me=1.05:1.0;
2) mixture step 1 prepared loads saggar and enters the long roller kilns of 30 ~ 50m with certain speed, heating rate is 2 DEG C/min, high-temperature region temperature 960 DEG C, high-temperature holding time 12h, material enters behind cooling area by air-cooled, water-cooled cooling, rate of temperature fall is 5 DEG C/min, and accurately controlling air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h; Through discaling roll, pair roller coarse crushing after coming out of the stove, then through ACM fine crushing to D50 at 12.0 ~ 13.0 μm, obtain LiNi
0.5co
0.2mn
0.3o
2.
Comparative example 2:
1) by the nickel cobalt manganese hydroxide precursor of D50 at 11.0 ~ 12.0 μm, adopt automatic weighing system accurate weighing, amount to about 2 tons and add mixer, simultaneously accurate weighing about 0.8 ton of lithium carbonate adds high efficient mixer and mixes, wherein Li:Me=1.05:1.0;
2) mixture step 1 prepared loads saggar and enters the long roller kilns of 30 ~ 50m with certain speed, heating rate is 2 DEG C/min, high-temperature region temperature 980 DEG C, high-temperature holding time 20h, material enters behind cooling area by air-cooled, water-cooled cooling, rate of temperature fall is 5 DEG C/min, and accurately controlling air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h; Through coarse crushing after coming out of the stove, then through fine crushing to D50 at 12.0 ~ 13.0 μm, obtain LiNi
0.5co
0.2mn
0.3o
2.
Comparative example 3:
1) by the nickel cobalt manganese hydroxide precursor of D50 at 5.0 ~ 6.0 μm, adopt automatic weighing system accurate weighing, amount to about 2 tons and add high efficient mixer, simultaneously accurate weighing about 0.95 ton of lithium hydroxide adds high efficient mixer and mixes, wherein Li:Me=1.05:1.0;
2) mixture step 1 prepared loads saggar and enters the long roller kilns of 30 ~ 50m with certain speed, heating rate is 2 DEG C/min, high-temperature region temperature 960 DEG C, high-temperature holding time 12h, material enters behind cooling area by air-cooled, water-cooled cooling, rate of temperature fall is 5 DEG C/min, and accurately controlling air inflow is 10.0 ~ 50.0m
3/ h, kiln hood air displacement 3000m
3/ h, kiln tail air displacement 1200m
3/ h; Through coarse crushing after coming out of the stove, then through fine crushing to D50 at 7.0 ~ 9.0 μm, obtain LiNi
0.5co
0.2mn
0.3o
2.
The high magnification nickle cobalt lithium manganate power tertiary cathode material of preparation is made into simulated battery test electrical property, the electrode component part by weight in simulated battery is active material: conductive agent (acetylene black): binding agent (PVDF)=80:12:8; Negative pole adopts lithium sheet; Barrier film adopts Celgard#5550 model; Electrolyte is the LiPF6 solution of 1mol/L, and solvent is EC (ethylene carbonate): DEC (dimethyl carbonate) of volume ratio 1:1,2.75 ~ 4.3V discharge and recharge.Its high rate performance correction data, cycle performance correction data are as shown in the table.
High rate performance
As can be seen from the above table, conventional NCM523 ternary material 1C/0.25C is 0.91,2C/0.25C be 0.83, the obtained ternary material high rate performance 1C/0.25C of method of the present invention is adopted to reach 0.93,2C/0.25C reaches 0.87, and wherein embodiment 1 contrasts with the high rate performance of comparative example 1 and schemes as shown in Figure 2.
Cycle performance
As can be seen from the above table, conventional NCM523 ternary material is after circulation 50 times, its capability retention is about 0.91, and the NCM523 ternary material adopting the inventive method obtained is after circulation 50 times, its capability retention is thrown away and can be remained on 0.95, even 0.96 and more than, wherein embodiment 1 contrasts with comparative example 1 cycle performance and schemes as shown in Figure 3.Wherein the ac impedance measurement of embodiment 1 and comparative example 1 as shown in Figure 4.
To sum up, can find out that the present invention has following advantage and effect by the above-mentioned data of comparative analysis:
1. the high magnification nickle cobalt lithium manganate power tertiary cathode material of special domain size distribution, Li
+the evolving path shorter, polarize less, high rate performance give prominence to;
2. bulk phase-doped by the metallic element that ionic radius is larger, cell parameter increases, and unit cell volume expands, Li
+diffusion coefficient improves, and high rate performance improves;
3. metal ion does not have electro-chemical activity, does not participate in reaction in cyclic process, plays the effect supporting crystal structure.Therefore, metal ion mixing can the structure of stabilizing material, improves cycle performance.
Claims (7)
1. an industrialized preparing process for 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material, comprises the following steps:
1) be that nickel cobalt manganese hydroxide precursor, the compound of metallic element M, the lithium source of 4.0 ~ 10.0 μm mixes by D50, the mass ratio of three is 2000:(500 ~ 1000): (1.0 ~ 5), wherein Li:Me:M=(1.02 ~ 1.06): 1.0:(0 ~ 0.005);
2) sintered at 850 ~ 1000 DEG C of temperature by the mixture after Homogeneous phase mixing, sintering time remains on 4 ~ 24h, continues to pass into air in sintering process;
3) mixture step 2 obtained carries out cooling down, passes into air while cooling;
4) cooled mixture is carried out fragmentation, be crushed to D50 between 3.0 ~ 11.0 μm.
2. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 1, is characterized in that: described lithium source can be lithium hydroxide, lithium carbonate one or both.
3. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 1, is characterized in that: the device sintered mixture in step 2 is 40-50 rice roller kilns.
4. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 3, is characterized in that: described roller kilns are 1 ~ 3 DEG C/min to the programming rate of mixture.
5. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 1, is characterized in that: the speed of lowering the temperature to mixture in described step 3 is 2 ~ 5 DEG C/min.
6. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 3, is characterized in that: roller kilns be sintered to 880 ~ 950 DEG C, mixture temperature retention time is at such a temperature 6 ~ 15h.
7. the industrialized preparing process of 30C multiplying power nickle cobalt lithium manganate NCM523 tertiary cathode material according to claim 1, is characterized in that: metal M element compound exists with one or more forms in the oxide of one or more elements in aluminium, zirconium, magnesium, titanium, molybdenum, rare earth element or hydroxide or carbonate.
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107706414A (en) * | 2017-11-13 | 2018-02-16 | 桑顿新能源科技有限公司 | A kind of preparation technology of high power capacity, macrocyclic nickelic positive electrode |
CN109244365A (en) * | 2018-11-09 | 2019-01-18 | 烟台卓能锂电池有限公司 | Anode material for lithium-ion batteries and preparation method thereof, anode and lithium ion battery |
CN109599540A (en) * | 2018-11-15 | 2019-04-09 | 北方奥钛纳米技术有限公司 | Active material and preparation method thereof, lithium ion battery |
CN110957482A (en) * | 2019-11-30 | 2020-04-03 | 华友新能源科技(衢州)有限公司 | Hexavalent element-added nickel-cobalt-manganese composite hydroxide and preparation method thereof |
CN111987303A (en) * | 2020-08-12 | 2020-11-24 | 中南大学 | Titanium germanium aluminum lithium phosphate modified high-nickel cathode material and preparation method thereof |
CN112744874A (en) * | 2020-12-29 | 2021-05-04 | 无锡晶石新型能源股份有限公司 | Preparation method of low-energy-consumption high-nickel ternary material |
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CN102583565A (en) * | 2012-02-29 | 2012-07-18 | 北京师范大学 | Preparation method for spinel-type lithium manganate |
CN105336941A (en) * | 2015-11-16 | 2016-02-17 | 广东邦普循环科技有限公司 | High-voltage LiNixCoyMnzM(1-x-y-z)O2 cathode material, preparation method thereof, cathode and battery |
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CN102583565A (en) * | 2012-02-29 | 2012-07-18 | 北京师范大学 | Preparation method for spinel-type lithium manganate |
CN105336941A (en) * | 2015-11-16 | 2016-02-17 | 广东邦普循环科技有限公司 | High-voltage LiNixCoyMnzM(1-x-y-z)O2 cathode material, preparation method thereof, cathode and battery |
Cited By (11)
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CN107706414A (en) * | 2017-11-13 | 2018-02-16 | 桑顿新能源科技有限公司 | A kind of preparation technology of high power capacity, macrocyclic nickelic positive electrode |
CN109244365A (en) * | 2018-11-09 | 2019-01-18 | 烟台卓能锂电池有限公司 | Anode material for lithium-ion batteries and preparation method thereof, anode and lithium ion battery |
CN109244365B (en) * | 2018-11-09 | 2021-12-07 | 万华化学集团股份有限公司 | Lithium ion battery positive electrode material, preparation method thereof, positive electrode and lithium ion battery |
CN109599540A (en) * | 2018-11-15 | 2019-04-09 | 北方奥钛纳米技术有限公司 | Active material and preparation method thereof, lithium ion battery |
CN110957482A (en) * | 2019-11-30 | 2020-04-03 | 华友新能源科技(衢州)有限公司 | Hexavalent element-added nickel-cobalt-manganese composite hydroxide and preparation method thereof |
CN110957482B (en) * | 2019-11-30 | 2021-08-03 | 华友新能源科技(衢州)有限公司 | Hexavalent element-added nickel-cobalt-manganese composite hydroxide and preparation method thereof |
CN111987303A (en) * | 2020-08-12 | 2020-11-24 | 中南大学 | Titanium germanium aluminum lithium phosphate modified high-nickel cathode material and preparation method thereof |
CN112744874A (en) * | 2020-12-29 | 2021-05-04 | 无锡晶石新型能源股份有限公司 | Preparation method of low-energy-consumption high-nickel ternary material |
CN112850792A (en) * | 2020-12-31 | 2021-05-28 | 湖南信达新材料有限公司 | Method for doping molybdenum in lithium battery positive electrode material |
CN113206241A (en) * | 2021-04-22 | 2021-08-03 | 湖北融通高科先进材料有限公司 | Preparation method of single crystal nickel cobalt lithium manganate ternary material |
CN113206241B (en) * | 2021-04-22 | 2022-08-05 | 湖北融通高科先进材料有限公司 | Preparation method of single crystal nickel cobalt lithium manganate ternary material |
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