CN107180950A - A kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method - Google Patents

A kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method Download PDF

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CN107180950A
CN107180950A CN201710249225.4A CN201710249225A CN107180950A CN 107180950 A CN107180950 A CN 107180950A CN 201710249225 A CN201710249225 A CN 201710249225A CN 107180950 A CN107180950 A CN 107180950A
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salt
preparation
cathode material
manganese
nca
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张保平
方万里
于伟
谢海军
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Fang Wanli
Xie Haijun
Yu Wei
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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
    • H01M4/362—Composites
    • H01M4/364—Composites as mixtures
    • 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
    • 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
    • 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
    • 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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  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention provides a kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method, including step（1）：The preparation of tertiary cathode material NCM, NCA presoma：Nickel salt, cobalt salt, manganese salt or aluminum salt solution are prepared, nickel salt, cobalt salt, manganese salt or aluminum salt solution are well mixed, cocurrent adds in reactor and carries out reaction precipitation together with the mixed liquor by precipitant solution, it is fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washing；Material is beaten, gained slurry input sand mill is sanded, the slurry after sand milling is obtained into precursor using drying process with atomizing pelletizing；Step（2）：Tertiary cathode material NCM, NCA preparation：Precursor is sufficiently mixed with lithium source, sintered under atmospheric condition, the material after sintering through it is broken, be classified, except obtaining material requested after magnetic.Present invention operation is simpler, and environmentally friendly, low for equipment requirements, waste of raw materials is few, and products obtained therefrom quality is more excellent.

Description

It is prepared by a kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process Method
Technical field
The invention belongs to energy storage material and electrochemical field, it is related to a kind of ternary cathode material of lithium ion battery NCM and NCA Preparation method.
Background technology
Lithium ion battery has high energy density, excellent cycle life, memory-less effect, low self-discharge rate because of it And the advantages of low stain, have become the first choice of electrokinetic cell.In the evolution of lithium ion battery, positive pole material is all the time Key factor.In recent years, tertiary cathode material NCM, NCA are widely used as the positive electrode of lithium ion battery.NCM, NCA make It is for the major advantage of anode material for lithium-ion batteries：Discharge platform is more steady, and lithium storage content is high.Its shortcoming is mainly for the first time Big and material the structural stability of cycle capacity loss is relatively poor, and heat endurance needs further raising, electrode with security Processing characteristics needs further improve.
Body before current ternary material manufacturer is generally prepared during tertiary cathode material is prepared using coprecipitation technology Body, will often use ammoniacal liquor and make complexing agent, the processing of waste water is cumbersome in production, there is ammonia nitrogen disclosure risk, and ammonia nitrogen is removed Device fixation input is larger, and production technology is not environmentally friendly enough, and resulting materials tap density is relatively low.But, with nickel cobalt mangaic acid The exploitation of the maturing of lithium forerunner's preparation process, the improvement of agglomerating plant, and new coating technology, ternary material is expected into For the main flow positive electrode of batteries of electric automobile.
The content of the invention
The technical problem of knack solution of the present invention is the shortcoming for overcoming existing technology of preparing, using chemistry altogether into shallow lake -- spraying is dry Drying process prepares NCM, NCA ternary precursors, then by appropriate with lithium and rational sintering process preparation high density ternary Positive electrode, with traditional chemical altogether into shallow lake technique compared with, it is not necessary to use ammoniacal liquor, it is not necessary to strictly control course of reaction, technique Operation is simpler, environmentally friendly, and resulting materials Elemental redistribution is uniform, and product quality more preferably, and is more suitable for scale, industrialization Produce high-tap density tertiary cathode material.
The invention provides a kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method, bag Include following steps：
Step（1）：The preparation of tertiary cathode material NCM, NCA presoma：Nickel salt, cobalt salt, manganese salt or aluminum salt solution are prepared, by nickel Salt, cobalt salt, manganese salt or aluminum salt solution are well mixed, and by precipitant solution, cocurrent adds to enter in reactor together with the mixed liquor It is still aging after row reaction precipitation, fully reaction；Solution after ageing is subjected to separation of solid and liquid, washing；By gained solid material It is beaten in beater, gained slurry input sand mill is sanded, the slurry after sand milling is obtained using drying process with atomizing pelletizing To tertiary cathode material precursor.
Step（2）：Tertiary cathode material NCM, NCA preparation：Gained ternary material precursor is sufficiently mixed with lithium source, Sintered under atmospheric condition, the material after sintering is through broken, classification, except NCM the or NCA tertiary cathode materials needed for being obtained after magnetic Material.
It is preferred that, the step（1）Middle nickel salt, cobalt salt, manganese salt or aluminum salt solution mol ratio are（1-8）：（1-2）: (0.04-3), nickel salt uses nickel sulfate, nickel chloride, nickel nitrate, nickelous carbonate, and nickel oxalate is one or more of, cobalt salt be cobaltous sulfate, Cobalt chloride, cobalt nitrate, cobalt oxalate, the one or more of cobalt carbonate, manganese salt is manganese sulfate, manganese chloride, manganese nitrate, manganese oxalate, carbon The one or more of sour manganese, aluminium salt is aluminum sulfate, aluminium chloride, aluminum nitrate, the one or more of sodium metaaluminate.
It is preferred that, the step（1）The molar concentration of metal ion is 0.5-2M/L in middle mixing salt solution.
It is preferred that, the step（1）Middle added precipitating reagent is sodium hydroxide, and its concentration is 2 times of concentration of salt solution, Precipitating reagent and salting liquid enter reactor with identical speed cocurrent, accuse pH value between 8-11, are adjusted by the change of pH value The flow velocity of precipitating reagent.
It is preferred that, the step（1）The middle solid material that filtration washing is later just uses sand milling by beater slurrying Machine is ground, and the solid content of slurry is sanded the abrading-ball used for a diameter of 0.1-0.5mm zirconiums ball, the time is sanded in 10%-60% 1-8 hours, the sanding media of use was water, and dispersant is polyacrylate.
It is preferred that, the step（1）In spherical ternary cathode material precursor is prepared by drying process with atomizing, spraying is dry The EAT of dry room is 160-350 DEG C, 80-100 DEG C of air outlet temperature, material solid content 10-60%, spray disk rotating speed 18000-30000 rpms.
It is preferred that, the step（2）In used lithium source be to use lithium carbonate, lithium hydroxide, lithium nitrate, lithium oxalate, vinegar Sour lithium it is a kind of or several.
It is preferred that, the step（2）In presoma used and lithium source proportioning for calculation in the molar ratio, match as 1：1.02- 1.1。
It is preferred that, the step（2）Middle sintering atmosphere is air or oxygen, and sintering temperature is 400-1050 DEG C, heating 1-5 DEG C of speed/min, sintering time is 10-20 hours, the material natural cooling after sintering, by crushing, classification, except magnetic is obtained Final products.
The present invention prepares NCM, NCA ternary precursors, compared with traditional handicraft into shallow lake-drying process with atomizing altogether using chemistry Complexing agent is made without using ammoniacal liquor, technique is more environmentally friendly, smashed altogether into the dendrite generated during shallow lake by sanded treatment so that member Element is more evenly distributed, gained precursor tap density >=2.2g/cm3, technique more preferably controls, operate it is simpler, it is environmentally friendly, Low for equipment requirements, waste of raw materials is few, and products obtained therefrom quality is more excellent.
Brief description of the drawings
NCA precursor scanned pictures prepared by Fig. 1 drying process with atomizing.
NCA scanning of materials pictures prepared by Fig. 2 drying process with atomizing.
NCA material charge-discharge performances prepared by Fig. 3 drying process with atomizing.
The NCA material circulation life-spans prepared by Fig. 4 drying process with atomizing.
NCM811 precursors spray drying pattern prepared by Fig. 5 drying process with atomizing.
Pattern after NCM811 sintering prepared by Fig. 6 drying process with atomizing.
NCM811 material circulation life diagrams prepared by Fig. 7 drying process with atomizing.
Embodiment
Below in conjunction with the accompanying drawings, the preferably embodiment to the present invention is described in further detail：
Embodiment 1
Respectively prepare 1mol/L nickel sulfate, 1mol/L cobaltous sulfate, 1mol/L each 1L of manganese sulfate solution, then by nickel sulfate, Cobaltous sulfate, manganese sulfate solution are well mixed, and by precipitating reagent 2mol/L sodium hydroxide solution, cocurrent adds together with the mixed liquor Enter and reaction precipitation is carried out in reactor, it is fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washing；Will Gained solid material is beaten in beater, and the solid content control of slurry is 10%, gained slurry input sand mill is sanded, sand The abrading-ball used is ground for a diameter of 0.1mm zirconiums ball, 1 hour time is sanded, the sanding media of use is water, and dispersant is polypropylene Hydrochlorate, carries out spray drying pelletizing, the EAT of spray drying chamber is 160 DEG C, air outlet temperature 80 by the slurry after sand milling DEG C, material solid content 10%, 18000 rpms of spray disk rotating speed is obtained before tertiary cathode material after drying process with atomizing pelletizing Body.；
By gained tertiary cathode material precursor with lithium carbonate in molar ratio 1：0.51 is sufficiently mixed, and is burnt under the atmosphere of air Knot, sintering temperature is 1050 DEG C, 5 DEG C/min of programming rate, and sintering time is 10 hours, material after sintering through broken, classification, Except obtaining required tertiary cathode material NCM111 after magnetic.
Embodiment 2
1mol/L nickel chloride, 0.4mol/L cobalt chloride, 0.6mol/L each 1L of manganese chloride solution is prepared respectively, then by chlorination Nickel, cobalt chloride, manganese chloride solution are well mixed, by precipitating reagent 1.33mol/L sodium hydroxide solution together with the mixed liquor Cocurrent adds in reactor and carries out reaction precipitation, fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washed Wash；Gained solid material is beaten in beater, the solid content control of slurry is 60%, and gained slurry is inputted into sand mill sand Mill, is sanded the abrading-ball used for a diameter of 0.5mm zirconiums ball, 8 hours time is sanded, the sanding media of use is water, and dispersant is Polyacrylate, carries out spray drying pelletizing, the EAT of spray drying chamber is 350 DEG C, air outlet by the slurry after sand milling Ternary is being obtained after 100 DEG C of temperature, material solid content 60%, 30000 rpms of spray disk rotating speed, drying process with atomizing pelletizing just Pole material precursor；
By gained tertiary cathode material precursor with lithium hydroxide in molar ratio 1：1.1 are sufficiently mixed, and are burnt under the atmosphere of oxygen Knot, sintering temperature is 400 DEG C, 1 DEG C/min of programming rate, and sintering time is 20 hours, material after sintering through broken, classification, Except obtaining required tertiary cathode material NCM523 after magnetic.
Embodiment 3
0.9mol/L nickel nitrate, 0.3mol/L cobalt nitrate, 0.3mol/L each 1L of manganese nitrate solution is prepared respectively, then by nitre Sour nickel, cobalt nitrate, manganese nitrate solution be well mixed, by precipitating reagent 1mol/L sodium hydroxide solution together with the mixed liquor simultaneously Stream adds in reactor and carries out reaction precipitation, fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washed Wash；Gained solid material is beaten in beater, the solid content control of slurry is 40%, and gained slurry is inputted into sand mill sand Mill, is sanded the abrading-ball used for a diameter of 0.2mm zirconiums ball, 4 hours time is sanded, the sanding media of use is water, and dispersant is Polyacrylate, carries out spray drying pelletizing, the EAT of spray drying chamber is 200 DEG C, air outlet by the slurry after sand milling Tertiary cathode is obtained after 90 DEG C of temperature, material solid content 40%, 25000 rpms of spray disk rotating speed, drying process with atomizing pelletizing Material precursor；
By gained tertiary cathode material precursor with lithium carbonate in molar ratio 1：0.53 is sufficiently mixed, and is burnt under the atmosphere of air Knot, sintering temperature is 900 DEG C, 3 DEG C/min of programming rate, and sintering time is 15 hours, material after sintering through broken, classification, Except obtaining required tertiary cathode material NCM622 after magnetic.
Embodiment 4
4mol/L nickelous carbonate, 0.5mol/L cobalt carbonate, 0.5mol/L each 1L of carbonic acid manganese solution is prepared respectively, then by carbonic acid Nickel, cobalt carbonate, carbonic acid manganese solution are well mixed, by precipitating reagent 3.33mol/L sodium hydroxide solution together with the mixed liquor Cocurrent adds in reactor and carries out reaction precipitation, fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washed Wash；Gained solid material is beaten in beater, the solid content control of slurry is 30%, and gained slurry is inputted into sand mill sand Mill, is sanded the abrading-ball used for a diameter of 0.3mm zirconiums ball, 5 hours time is sanded, the sanding media of use is water, and dispersant is Polyacrylate, carries out spray drying pelletizing, the EAT of spray drying chamber is 250 DEG C, air outlet by the slurry after sand milling Tertiary cathode is obtained after 85 DEG C of temperature, material solid content 30%, 20000 rpms of spray disk rotating speed, drying process with atomizing pelletizing Material precursor；
By gained tertiary cathode material precursor with lithium oxalate in molar ratio 1：0.54 is sufficiently mixed, and is burnt under the atmosphere of air Knot, sintering temperature is 750 DEG C, 2 DEG C/min of programming rate, and sintering time is 18 hours, material after sintering through broken, classification, Except obtaining required tertiary cathode material NCM811 after magnetic.
Embodiment 5
1mol/L nickel oxalate, 1mol/L cobalt oxalate, 0.3mol/L each 1L of liquor alumini chloridi is prepared respectively, then by oxalic acid Nickel, cobalt oxalate, liquor alumini chloridi are well mixed, by precipitating reagent 1.53mol/L sodium hydroxide solution together with the mixed liquor Cocurrent adds in reactor and carries out reaction precipitation, fully still aging after reaction；Solution after ageing is subjected to separation of solid and liquid, washed Wash；Gained solid material is beaten in beater, the solid content control of slurry is 50%, and gained slurry is inputted into sand mill sand Mill, is sanded the abrading-ball used for a diameter of 0.4mm zirconiums ball, 6 hours time is sanded, the sanding media of use is water, and dispersant is Polyacrylate, carries out spray drying pelletizing, the EAT of spray drying chamber is 300 DEG C, air outlet by the slurry after sand milling Tertiary cathode is obtained after 95 DEG C of temperature, material solid content 50%, 27000 rpms of spray disk rotating speed, drying process with atomizing pelletizing Material precursor；
By gained tertiary cathode material precursor with lithium acetate in molar ratio 1：0.54 is sufficiently mixed, and is burnt under the atmosphere of air Knot, sintering temperature is 950 DEG C, 4 DEG C/min of programming rate, and sintering time is 17 hours, material after sintering through broken, classification, Except obtaining required tertiary cathode material NCA after magnetic.
The tap density of embodiment 1-5 resulting materials is more than 2.2, can random grain-size scope, d50 can be prepared High-rate type tertiary cathode material of the footpath at 4-6 microns.
Fig. 1 is tertiary cathode material precursor in the embodiment of the present invention 5, and it is shaped as spherical or elliposoidal, and grain is passed through Between 5-12 μm, it is distributed homogeneous.
Fig. 2 is tertiary cathode material in the embodiment of the present invention 5, and it is shaped as spherical or elliposoidal, grain pass through 3-8 μm it Between, it is distributed homogeneous.
Fig. 3, Fig. 4 make the charge-discharge performance figure after battery for tertiary cathode material in the embodiment of the present invention 5, and its capacity reaches To 202mAh/g, efficiency for charge-discharge reaches more than 98%.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's Protection domain.

Claims (9)

1. a kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method, it is characterised in that including with Lower step：
Step（1）：The preparation of tertiary cathode material NCM, NCA presoma：Nickel salt, cobalt salt, manganese salt or aluminum salt solution are prepared, by nickel Salt, cobalt salt, manganese salt or aluminum salt solution are well mixed, and by precipitant solution, cocurrent adds to enter in reactor together with the mixed liquor It is still aging after row reaction precipitation, fully reaction；Solution after ageing is subjected to separation of solid and liquid, washing；By gained solid material It is beaten in beater, gained slurry input sand mill is sanded, the slurry after sand milling is obtained using drying process with atomizing pelletizing To tertiary cathode material precursor；
Step（2）：Tertiary cathode material NCM, NCA preparation：Gained ternary material precursor is sufficiently mixed with lithium source, in gas Sintered under the conditions of atmosphere, the material after sintering is through broken, classification, except NCM, NCA tertiary cathode material needed for being obtained after magnetic.
2. preparation method as claimed in claim 1, it is characterised in that the step（1）Middle nickel salt, cobalt salt, manganese salt or aluminium salt Solution mol ratio is（1-8）：（1-2）:(0.04-3), nickel salt uses nickel sulfate, nickel chloride, nickel nitrate, nickelous carbonate, nickel oxalate One or more, cobalt salt is cobaltous sulfate, cobalt chloride, cobalt nitrate, cobalt oxalate, and the one or more of cobalt carbonate, manganese salt is manganese sulfate, Manganese chloride, manganese nitrate, manganese oxalate, the one or more of manganese carbonate, aluminium salt is aluminum sulfate, aluminium chloride, aluminum nitrate, sodium metaaluminate It is one or more of.
3. preparation method as claimed in claim 1, it is characterised in that the step（1）Metal ion in middle mixing salt solution Molar concentration be 0.5-2M/L.
4. preparation method as claimed in claim 1, it is characterised in that the step（1）Middle added precipitating reagent is hydrogen-oxygen Change sodium, its concentration is 2 times of concentration of salt solution, and precipitating reagent and salting liquid enter reactor with identical speed cocurrent, accuse pH value Between 8 to 11, the flow velocity of precipitating reagent is adjusted by the change of pH value.
5. preparation method as claimed in claim 1, it is characterised in that the step（1）The middle solid that filtration washing is later Material is ground by beater slurrying, and with sand mill, the solid content of slurry in 10%-60%, be sanded the abrading-ball that uses for A diameter of 0.1-0.5mm zirconiums ball, is sanded time 1-8 hour, the sanding media of use is water, and dispersant is polyacrylate.
6. preparation method as claimed in claim 1, it is characterised in that the step（1）In prepared by drying process with atomizing Spherical ternary cathode material precursor, the EAT of spray drying chamber is 160-350 DEG C, 80-100 DEG C of air outlet temperature, thing Expect solid content 10-60%, 18000-30000 revs/min of spray disk rotating speed.
7. preparation method as claimed in claim 1, it is characterised in that the step（2）In lithium source used be lithium carbonate, hydrogen-oxygen Change lithium, lithium nitrate, lithium oxalate, lithium acetate it is a kind of or several.
8. preparation method as claimed in claim 1, it is characterised in that the step（2）In presoma used and lithium source match somebody with somebody Than for calculation in the molar ratio, matching as 1：1.0 -1.1.
9. preparation method as claimed in claim 1, it is characterised in that the step（2）Middle sintering atmosphere is air or oxygen Gas, sintering temperature is 400-1050 DEG C, 1-5 DEG C of programming rate/min, and sintering time is 10-20 hours, and the material after sintering is certainly So cooling, by crushing, classification, except magnetic obtains final products.
CN201710249225.4A 2017-04-17 2017-04-17 A kind of ternary cathode material of lithium ion battery NCM, NCA spray drying process preparation method Pending CN107180950A (en)

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CN107732235A (en) * 2017-04-17 2018-02-23 福建金山锂科新材料有限公司 A kind of ternary cathode material of lithium ion battery NCA preparation method
CN108365183A (en) * 2018-01-02 2018-08-03 乳源东阳光磁性材料有限公司 Ternary material with surface coated with aluminum oxide and preparation method thereof
CN108439490A (en) * 2018-04-25 2018-08-24 深圳市寒暑科技新能源有限公司 A kind of Preparation equipment and preparation method of ternary material precursor
CN108529687A (en) * 2018-04-25 2018-09-14 北方奥钛纳米技术有限公司 A kind of preparation method of hydroxide nickel cobalt manganese
CN108539127A (en) * 2018-04-25 2018-09-14 深圳市寒暑科技新能源有限公司 A kind of continuous device and method for preparing ternary material
CN108767252A (en) * 2018-02-28 2018-11-06 中南大学 A kind of lithium ion battery
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CN108933239A (en) * 2018-06-26 2018-12-04 方嘉城 A kind of preparation method of LiMn2O4 cladding nickel-cobalt lithium manganate cathode material
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CN110342588A (en) * 2019-07-23 2019-10-18 上海应用技术大学 A kind of ternary cathode material of lithium ion battery and preparation method thereof
CN112125351A (en) * 2019-06-25 2020-12-25 惠州比亚迪实业有限公司 Ternary precursor and preparation method thereof, ternary material and preparation method thereof, and lithium ion battery
CN112768683A (en) * 2020-10-19 2021-05-07 东莞理工学院 Polyanion-doped manganese-rich ternary cathode material and preparation method thereof
CN113044892A (en) * 2021-03-10 2021-06-29 福建省云智新材料科技有限公司 Preparation method of nickel manganese oxide
WO2021212729A1 (en) * 2020-04-24 2021-10-28 四川万邦胜辉新能源科技有限公司 Nickel-manganese-based positive electrode material precursor and synthesis method for positive electrode material thereof
US11508961B2 (en) 2017-11-13 2022-11-22 Lg Energy Solution, Ltd. Method of preparing positive electrode active material for secondary battery

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CN110342588A (en) * 2019-07-23 2019-10-18 上海应用技术大学 A kind of ternary cathode material of lithium ion battery and preparation method thereof
WO2021212729A1 (en) * 2020-04-24 2021-10-28 四川万邦胜辉新能源科技有限公司 Nickel-manganese-based positive electrode material precursor and synthesis method for positive electrode material thereof
CN112768683A (en) * 2020-10-19 2021-05-07 东莞理工学院 Polyanion-doped manganese-rich ternary cathode material and preparation method thereof
CN113044892A (en) * 2021-03-10 2021-06-29 福建省云智新材料科技有限公司 Preparation method of nickel manganese oxide

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