CN107464929A - Preparation method, anode material for lithium-ion batteries and the lithium ion battery of nickel-cobalt lithium manganate cathode material - Google Patents
Preparation method, anode material for lithium-ion batteries and the lithium ion battery of nickel-cobalt lithium manganate 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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- 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
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- 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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Abstract
The invention belongs to technical field of lithium ion, is related to a kind of preparation method of nickel-cobalt lithium manganate cathode material, anode material for lithium-ion batteries and lithium ion battery.The preparation method of nickel-cobalt lithium manganate cathode material provided by the invention, comprises the following steps：Prepare the aqueous solution for the ternary material precursor that weight concentration is 45%~60%；Prepare the aqueous solution for the Li source compound that weight concentration is 20%~30%；By the aqueous solution of the aqueous solution of the ternary material precursor and Li source compound respectively with being pumped into mixer, it is mixed evenly, obtains suspension；The suspension is spray-dried, obtains matching somebody with somebody lithium mixed powder；It is sintered described with lithium mixed powder, obtains nickel-cobalt lithium manganate cathode material.The present invention can improve the mixing efficiency of presoma and Li source compound and mix the uniformity of particle diameter, while easy to operate, and reaction condition is gentle, easily controllable, and obtained positive electrode has excellent chemical property.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of preparation side of nickel-cobalt lithium manganate cathode material
Method, anode material for lithium-ion batteries and lithium ion battery.
Background technology
In existing secondary cell system, no matter from development space, or from the life-span, than energy, operating voltage and from
From the point of view of the technical indicators such as discharge rate, lithium ion battery is all current most competitive secondary cell.And the pass of lithium ion battery
Key material is positive electrode, accounts for the 30% of lithium ion battery cost.The positive electrode that lithium ion battery uses in the market
Mainly there are cobalt acid lithium, LiFePO4, LiMn2O4 and cobalt nickel lithium manganate ternary material etc..Cobalt nickel lithium manganate ternary material is a kind of new
The cell positive material of type, compared with the other materials such as cobalt acid lithium, with specific discharge capacity is high, heat endurance is good, cycle performance
Well, the advantages that operating temperature is wide, energy density is big.Good combination property so that cobalt nickel lithium manganate ternary material turns into current
The main flow in market, and a kind of most potential cell positive material, in digital electronic goods, electric bicycle, electric tool
There are good application scenarios Deng field.
At present, after the preparation method of ternary material is mainly mixed using presoma with lithium source dry or wet, burnt through high temperature
Knot, broken, iron removaling, sieving, packaging, are made ternary material.In existing preparation method, the step of lithium source mixes with presoma, is
Experience is had to, then existing presoma mixes lithium technology, still suffers from the problem of mixing is uneven, causes presoma to mix lithium equal
Even degree is poor, and then causes the sample after sintering rich lithium or scarce lithium occur, and stability is poor between batch, have impact on the items of material
Performance indications, the electrochemistry of product can be guaranteed.In the preparation method of existing ternary material, also there is nickel, cobalt,
Three kinds of elements of manganese fail full and uniform mixing, fail to give full play to respective effect, and the powder body material bulk density of synthesis is low etc.
Defect.In addition, existing preparation method step is complicated, processing step is long, the compound of addition is excessive, and course of reaction is not easily-controllable
System, cost is high, is unfavorable for practical application.
In consideration of it, special propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of preparation method of nickel-cobalt lithium manganate cathode material, and this method can carry
The mixing efficiency of high presoma and Li source compound and the uniformity for mixing particle diameter, while production operation is convenient, reaction condition temperature
With, it is easily controllable, obtained nickle cobalt lithium manganate has excellent chemical property.
The second object of the present invention is to provide a kind of anode material for lithium-ion batteries, by above-mentioned nickle cobalt lithium manganate positive pole material
Material uses as anode material for lithium-ion batteries, has the advantages of particle diameter distribution is uniform, and uniformity is good, electrochemical performance.
The third object of the present invention is to provide a kind of lithium ion battery, and the performance of lithium ion battery is stable, electrochemistry
Can be excellent.
To achieve the above object, the technical solution adopted by the present invention is：
According to an aspect of the present invention, the present invention provides a kind of preparation method of nickel-cobalt lithium manganate cathode material, including
Following steps：
(a) aqueous solution for the ternary material precursor that weight concentration is 45%~60% is prepared；
(b) aqueous solution for the Li source compound that weight concentration is 20%~30% is prepared；
(c) by the aqueous solution of the aqueous solution of the ternary material precursor and Li source compound respectively be pumped into stirring
In machine, it is mixed evenly, obtains suspension；
(d) suspension is spray-dried, obtains matching somebody with somebody lithium mixed powder；
(e) it is sintered described with lithium mixed powder, obtains nickel-cobalt lithium manganate cathode material.
As further preferred technical scheme, in step (a), ultrasound is carried out to the aqueous solution of the ternary material precursor
Processing, supersonic frequency is 10~30KHz, and sonication treatment time is 20~90min.
As further preferred technical scheme, in step (b), ultrasonic place is carried out to the aqueous solution of the Li source compound
Reason, supersonic frequency is 20~40KHz, and sonication treatment time is 30~100min.
As further preferred technical scheme, in step (c), the pump is precision metering pump, passes through the delicate metering
Pump controls ternary material precursor and the mol ratio of Li source compound；
Preferably, the mixer is homogenizer, and the rotating speed of mixer is 1500~4000rpm, and mixing time is
30~120min, whipping temp are normal temperature；
Preferably, the pump is connected with mixer by pipeline, is provided with the connecting pipeline of the pump and mixer
Check-valves and/or regulating valve.
As further preferred technical scheme, in step (d), the suspension is delivered to spray drying using peristaltic pump
It is spray-dried in device, the compressed air pressure for controlling spray dryer is 0.05~0.75MPa, and wriggling pump discharge is 200
~800mL/min, temperature is 200 DEG C~350 DEG C at nozzle, and by controlling the pressure of compressed air to adjust the particle diameter chi of powder
Very little size；
Preferably, the average grain diameter with lithium mixed powder is 1~20 μm.
As further preferred technical scheme, in step (e), it is put into high temperature rail kiln with lithium mixed powder by described
Row sintering, first 450~550 DEG C, 6~10h of Isothermal sinter are warming up in air or oxygen atmosphere with 1~3 DEG C/min speed,
880~1000 DEG C are warming up to 1~3 DEG C/min speed again, 10~16h of Isothermal sinter, room temperature is naturally cooled to, obtains nickel cobalt
Manganate cathode material for lithium.
As further preferred technical scheme, the nickel-cobalt lithium manganate cathode material is LiNi1/3Co1/3Mn1/3O2；
Preferably, the ternary material precursor is Ni1/3Co1/3Mn1/3(OH)2；
Preferably, the Li source compound is at least one of monohydrate lithium hydroxide, anhydrous lithium hydroxide or lithium carbonate.
According to another aspect of the present invention, the present invention also provides a kind of anode material for lithium-ion batteries, will be by above-mentioned
The nickel-cobalt lithium manganate cathode material that preparation method obtains is as anode material for lithium-ion batteries.
As further preferred technical scheme, the average grain diameter of the nickel-cobalt lithium manganate cathode material is 2~10 μm, compares table
Area is 0.3~0.9m2/g。
According to another aspect of the present invention, the present invention also provides a kind of lithium ion battery, including housing, is placed in housing
Positive pole, negative pole, barrier film and electrolyte, the barrier film between the positive pole and negative pole, the positive pole include it is described above
Anode material for lithium-ion batteries.
Compared with prior art, the beneficial effects of the present invention are：
1st, the preparation method of nickel-cobalt lithium manganate cathode material provided by the invention, by preparing ternary material precursor respectively
The aqueous solution and the Li source compound aqueous solution, the mode then to stir, on the one hand solve dry method and mix lithium dust from flying, pollution
The problem of environment, uneven mixing, on the other hand improve existing wet method and mix lithium mode, and cause mixed presoma
There is the uniformity of height with lithium source mixture, be favorably improved product quality so that the uniformity of product in large-scale production
It is guaranteed.Ternary material precursor and lithium source are granulated by being spray-dried after material by wet type mixing, ensure that follow-up sintering
When lithium ion be evenly embedded into presoma, particle diameter distribution is homogeneous, improves the structural stability of material, it is ensured that final to be made
Ternary material there is excellent chemical property.
2nd, nickel-cobalt lithium manganate cathode material, its nickel, cobalt, manganese, the metal ion species of lithium four made from the method for the present invention are passed through
Reach the uniform mixing of molecular level, give full play to respective effect, product pattern is good, and particle is uniform, and has higher jolt ramming
Density, excellent cyclical stability, overcharging resisting ability and first charge-discharge efficiency significantly improve, and overcome existing material settling out
The shortcomings that property is bad, improves the stability of material between batch.
3rd, preparation method of the invention is simple to operate, and reaction condition is gentle and easily controllable, and raw material is easy to get, cheap,
Production cost is low, and the pollution of preparation process substance environment, the reaction time is short, and production efficiency is high, and obtained positive electrode particle diameter distribution
Homogeneous, electrochemical performance, it is easy to large-scale industry popularization, there is good application prospect on lithium ion battery.
4th, lithium ion battery and anode material for lithium-ion batteries provided by the invention, cost is low, stable performance, uniformity
Good, tap density is high, and energy density is high, electrochemical performance.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the cycle-index-specific discharge capacity figure for the nickel-cobalt lithium manganate cathode material that the embodiment of the present invention 1 provides, horizontal
Coordinate is cycle-index, and ordinate is specific discharge capacity (mAh/g)；
Fig. 2 is the cycle-index-specific discharge capacity figure for the nickel-cobalt lithium manganate cathode material that the embodiment of the present invention 4 provides, horizontal
Coordinate is cycle-index, and ordinate is specific discharge capacity (mAh/g)；
Fig. 3 is that the SEM for the nickel-cobalt lithium manganate cathode material that the embodiment of the present invention 1 provides schemes (Scanning Electron
Microscope scanning electron microscope (SEM) photographs)；
Fig. 4 is that the SEM for the nickel-cobalt lithium manganate cathode material that comparative example 1 of the present invention provides schemes (Scanning Electron
Microscope scanning electron microscope (SEM) photographs).
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment and embodiment, but this area skill
Art personnel will be understood that following embodiments and embodiment are merely to illustrate the present invention, and be not construed as the model of the limitation present invention
Enclose.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.Actual conditions person is indicated, is suggested according to normal condition or manufacturer
Condition carry out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional products that can be obtained by commercially available purchase.
In a first aspect, present embodiment provides a kind of preparation method of nickel-cobalt lithium manganate cathode material, comprise the following steps：
(a) aqueous solution for the ternary material precursor that weight concentration is 45%~60% is prepared；
(b) aqueous solution for the Li source compound that weight concentration is 20%~30% is prepared；
(c) by the aqueous solution of the aqueous solution of the ternary material precursor and Li source compound respectively be pumped into stirring
In machine, it is mixed evenly, obtains suspension；
(d) suspension is spray-dried, obtains matching somebody with somebody lithium mixed powder；
(e) it is sintered described with lithium mixed powder, obtains nickel-cobalt lithium manganate cathode material.
In view of existing nickel-cobalt lithium manganate cathode material in preparation process, there is four kinds of nickel, cobalt, manganese, lithium metals
Ion fails to be sufficiently mixed well, it is impossible to gives full play to respective effect, the particle diameter distribution of product is uneven, and operation is numerous
Trivial, the problems such as process is difficult to control, the present invention provides a kind of nickle cobalt lithium manganate positive pole that can effectively alleviate above-mentioned technical problem
The preparation method of material.
The present invention by preparing the ternary material precursor aqueous solution and the Li source compound aqueous solution respectively, and then stirring is equal
It is even, spray drying, the mode of operation of sintering, on the one hand solve existing dry method and mix lithium dust from flying, pollution environment, mixing not
The problem of uniform, on the other hand improve existing wet method and mix lithium mode, simple, convenient, reaction condition is gentle and is easy to
Control, without use other organic solvents, dispersant, complexity operation equipment etc., and cause mixed presoma and lithium
Source mixture has the uniformity of height, it is ensured that product cut size is evenly distributed, uniformity is good, nickel, cobalt, manganese, four kinds of metals of lithium from
Son has obtained good mixing, and then the positive electrode for be prepared has excellent chemical property.
In the present invention, the weight concentration of the aqueous solution of the ternary material precursor of preparation is preferably 45%~60%, described
Weight concentration be part by weight of the ternary material precursor in its aqueous solution.The aqueous solution weight of the Li source compound of preparation
Concentration is preferably 20%~30%, and described weight concentration is part by weight of the Li source compound in its aqueous solution.By adopting
Mixed with above-mentioned weight concentration, it is possible to increase mixing efficiency, and good mixing effect.
In a detailed embodiment, optionally, the weight concentration of the aqueous solution of ternary material precursor be 45%,
46%th, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59% or 60%.
In a detailed embodiment, optionally, the aqueous solution weight concentration of Li source compound be 20%, 21%,
22%th, 23%, 24%, 25%, 26%, 27%, 28%, 29% or 30%.
In a kind of optional embodiment, in step (a), ultrasound is carried out to the aqueous solution of the ternary material precursor
Processing, supersonic frequency is 10~30KHz, and sonication treatment time is 20~90min.
In a kind of optional embodiment, in step (b), ultrasonic place is carried out to the aqueous solution of the Li source compound
Reason, supersonic frequency is 20~40KHz, and sonication treatment time is 30~100min.
The aqueous solution of ternary material precursor and the aqueous solution of Li source compound are handled by ultrasonic wave, can
Solute effect is improved, can significantly prevent agglomeration, is not likely to produce dephasign, and then effective control product cut size distribution
Uniformity, while safe operation is easily controlled, is advantageous to improve production efficiency.
The temperature of supersound process can be normal temperature, can also can also be heated to less than 50 DEG C and be ultrasonically treated.
In a detailed embodiment, optionally, the supersonic frequency that the aqueous solution of ternary material precursor is ultrasonically treated
For 10KHz, 12KHz, 14KHz, 15KHz, 16KHz, 18KHz, 20KHz, 22KHz, 24KHz, 25KHz, 26KHz, 28KHz or
30KHz；Sonication treatment time be 20min, 25min, 30min, 35min, 40min, 45min, 50min, 55min, 60min,
65min, 70min, 75min, 80min, 85min or 90min.
In a detailed embodiment, optionally, the supersonic frequency of the aqueous solution supersound process of Li source compound is
20KHz, 22KHz, 24KHz, 25KHz, 26KHz, 28KHz, 30KHz, 32KHz, 34KHz, 35KHz, 36KHz, 38KHz or
40KHz；Sonication treatment time be 30min, 35min, 45min, 50min, 55min, 60min, 65min, 70min, 75min,
80min, 85min, 90min, 95min or 100min.
In a kind of optional embodiment, in step (c), the pump is precision metering pump, passes through the delicate metering
Pump controls ternary material precursor and the mol ratio of Li source compound；
Preferably, the mixer is homogenizer, and the rotating speed of mixer is 1500~4000rpm, and mixing time is
30~120min, whipping temp are normal temperature；
Preferably, the pump is connected with mixer by pipeline, is provided with the connecting pipeline of the pump and mixer
Check-valves and/or regulating valve.
The hybrid technology of existing ternary material precursor and Li source compound, not only there is mix uneven ask
Topic, also there is proportioning is inaccurate, the problems such as with lithium amount deviation, and the application is conveyed respectively by using precision metering pump
The mode of the aqueous solution of ternary material precursor and the aqueous solution of Li source compound, can accurately control ternary material precursor with
The mol ratio of Li source compound, and then the existing technical problem for matching somebody with somebody lithium amount deviation of the prior art effectively solved.
Also, the application is between precision metering pump and homogenizer, or the exit of precision metering pump is provided with
Check-valves and/or regulating valve, it can further improve the aqueous solution of ternary material precursor and the aqueous solution of Li source compound
Conveying capacity accuracy, prevents exception, and caused dosage is forbidden phenomenon.
In a detailed embodiment, optionally, the rotating speed of mixer be 1500rpm, 2000rpm, 2500rpm,
3000rpm, 3500rpm or 4000rpm；Mixing time be 30min, 40min, 50min, 60min, 70min, 80min, 90min,
100min、110min、120min；Whipping temp is normal temperature, i.e., 25~35 DEG C, can be 25 DEG C, 26 DEG C, 27 DEG C, 28 DEG C, 29
DEG C, 30 DEG C, 31 DEG C, 32 DEG C, 33 DEG C, 34 DEG C or 35 DEG C.
In a kind of optional embodiment, in step (d), the suspension is delivered to spray drying using peristaltic pump
It is spray-dried in device, the compressed air pressure for controlling spray dryer is 0.05~0.75MPa, and wriggling pump discharge is 200
~800mL/min, temperature is 200 DEG C~350 DEG C at nozzle, and by controlling the pressure of compressed air to adjust the particle diameter chi of powder
Very little size；
Preferably, the average grain diameter with lithium mixed powder is 1~20 μm.
It is spray-dried, the grain size size and particle diameter distribution of mixture can be adjusted by spray dryer
It is whole so that the particle diameter distribution of material is homogeneous, has the good uniformity.Charging rate be the flow of peristaltic pump, atomizing pressure i.e.
Pressure of compressed air etc. can be adjusted according to the granularity difference needed for product.
Under the operating conditions described above, the particle diameter for enabling to product is in normal distribution, good sphericity, is evenly distributed, product
Density and capacitance it is higher.
In a detailed embodiment, optionally, compressed air pressure 0.05Mpa, 0.10Mpa, 0.15Mpa,
0.20Mpa、0.25Mpa、0.30Mpa、0.35Mpa、0.40Mpa、0.45Mpa、0.50Mpa、0.55Mpa、0.60Mpa、
0.65Mpa, 0.70Mpa or 0.75Mpa；Wriggling pump discharge be 200mL/min, 250mL/min, 300mL/min, 350mL/min,
400mL/min、450mL/min、500mL/min、550mL/min、600mL/min、650mL/min、700mL/min、750mL/
Min or 800mL/min；At nozzle temperature be 200 DEG C, 220 DEG C, 240 DEG C, 250 DEG C, 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C,
340 DEG C or 350 DEG C.
In a detailed embodiment, optionally, average grain diameter with lithium mixed powder is 1 μm, 2 μm, 3 μm, 4 μm, 5
μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm or 20 μm.
In a kind of optional embodiment, in step (e), it is put into high temperature rail kiln with lithium mixed powder by described
Row sintering, first 450~550 DEG C, 6~10h of Isothermal sinter are warming up in air or oxygen atmosphere with 1~3 DEG C/min speed,
880~1000 DEG C are warming up to 1~3 DEG C/min speed again, 10~16h of Isothermal sinter, room temperature is naturally cooled to, obtains nickel cobalt
Manganate cathode material for lithium.
The present invention uses the atmosphere sintering mode of segmented, is more beneficial for nickel-cobalt lithium manganate cathode material in building-up process
In, the reconstruction of material lattice structure skeleton and the arrangement of various metal cations, moreover it is possible to control the fine particle content of material, enter
And improve the chemical property of nickel-cobalt lithium manganate cathode material.
In a detailed embodiment, optionally, heating rate be 1 DEG C/min, 1.2 DEG C/min, 1.5 DEG C/min, 1.8
DEG C/min, 2 DEG C/min, 2.2 DEG C/min, 2.5 DEG C/min, 2.8 DEG C/min or 3 DEG C/min；First be warming up to 450 DEG C, 460 DEG C, 470
DEG C, 480 DEG C, 490 DEG C, 500 DEG C, 510 DEG C, 520 DEG C, 530 DEG C, 540 DEG C or 550 DEG C；Isothermal sinter 6h, 6.5h, 7h, 7.5h,
8h, 8.5h, 9h, 9.5h or 10h；Again with same heating rate be warming up to 880 DEG C, 890 DEG C, 900 DEG C, 910 DEG C, 920 DEG C,
930 DEG C, 940 DEG C, 950 DEG C, 960 DEG C, 970 DEG C, 980 DEG C, 990 DEG C or 1000 DEG C；Isothermal sinter 10h, 10.5h, 11h,
11.5h, 12h, 12.5h, 13h, 13.5h, 14h, 14.5h, 15h or 16h.
In a kind of optional embodiment, the nickel-cobalt lithium manganate cathode material is LiNi1/3Co1/3Mn1/3O2；
Preferably, the ternary material precursor is Ni1/3Co1/3Mn1/3(OH)2；
Preferably, the Li source compound is at least one of monohydrate lithium hydroxide, anhydrous lithium hydroxide or lithium carbonate.
In the present invention, Li source compound is preferably lithium hydroxide or lithium carbonate, and it is water-soluble preferably, can preferably go
It is well mixed in ionized water with ternary material precursor, raw material is easy to get, and price is relatively low.
Using above-mentioned ternary material precursor and lithium source, under aforesaid operations Parameter Conditions, carry out the preparation of the aqueous solution, mix
Conjunction stirring, spray drying and sintering, it is not only economical, efficient, economize on resources, and obtained ternary material uniformity is good, particle diameter
It is evenly distributed, pattern rule, tap density is higher, electrochemical performance, and preparation process is simple, it is not necessary to harsh technique bar
Part, easily-controlled operation.
Second aspect, present embodiment provide a kind of anode material for lithium-ion batteries, will obtained by above-mentioned preparation method
Nickel-cobalt lithium manganate cathode material as anode material for lithium-ion batteries.
The nickel-cobalt lithium manganate cathode material that Pass through above-mentioned technical proposal is prepared, there is preferable chemical property, by it
Used as anode material for lithium-ion batteries, cost is low, stable performance, and uniformity is good, and tap density is high.
In a kind of optional embodiment, the average grain diameter of the nickel-cobalt lithium manganate cathode material is 2~10 μm, compares table
Area is 0.3~0.9m2/g。
The present invention is scanned electronic microscope photos test, test result table to the nickel-cobalt lithium manganate cathode material being prepared
Bright, the pattern of the ternary material is is mostly spherical morphology, and pattern rule, uniformity is good, and particle diameter distribution is uniform, and with suitable
Specific surface area.
In a detailed embodiment, optionally, the average grain diameter of nickel-cobalt lithium manganate cathode material is 2 μm, 3 μm, 4 μ
M, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm；Specific surface area is 0.3m2/g、0.4m2/g、0.5m2/g、0.6m2/g、0.7m2/g、
0.8m2/ g or 0.9m2/g。
The third aspect, present embodiment provide a kind of lithium ion battery, including housing, the positive pole being placed in housing, negative pole,
Barrier film and electrolyte, for the barrier film between the positive pole and negative pole, the positive pole includes above-described lithium ion battery
Positive electrode.
In present embodiment second aspect and the third aspect, anode material for lithium-ion batteries, which removes, uses above-mentioned nickle cobalt lithium manganate
Beyond positive electrode is as active material, remaining composition and structure refer to prior art；Positive pole, negative pole and lithium ion battery knot
Structure its preparation method refers to routine techniques, is added with differing only in anode material for lithium-ion batteries for routine techniques
The nickel-cobalt lithium manganate cathode material obtained by the preparation method of the nickel-cobalt lithium manganate cathode material described in first aspect.
Alternatively, the housing is stainless steel box hat, aluminum hull or polyalcohol flexible packing.
Alternatively, the negative pole includes negative material, and the negative material includes activated carbon, activated carbon and metallic particles
Mixture, graphite, carborundum, lithium piece or lithium titanate.
Alternatively, the barrier film is PP＆PE barrier films, fibreglass diaphragm or Celgard2300 barrier films.
Alternatively, the electrolyte is 1mol/L LiPF6Conducting salt and DMC：DEC：EC (wt%)=1：1：1 it is molten
Agent, or solid electrolyte.
The average grain diameter of nickel-cobalt lithium manganate cathode material produced by the present invention be 2~10 μm, specific surface area be 0.3~
0.9m2/ g, effectively increase the structural stability of positive electrode.The present invention tests the nickel cobalt manganese using tap density tester
The tap density of sour lithium anode material, test result are tap density 2.0g/cm3~2.4g/cm3, tap density is higher.Together
When, the nickel-cobalt-manganese ternary material that the present invention is obtained is assembled into battery, measures nickel cobalt mangaic acid as anode material for lithium-ion batteries
The first discharge specific capacity of lithium at room temperature is 148~160mAh/g, and 30 times~100 times cyclical stabilities of discharge and recharge are good, say
Understand that anode material for lithium-ion batteries provided by the invention has preferable chemical property.
With reference to specific embodiment, comparative example and accompanying drawing, the invention will be further described.
Embodiment 1
A kind of preparation method of nickel-cobalt lithium manganate cathode material, comprises the following steps：
(a) the ternary material precursor Ni that weight concentration is 45% is prepared1/3Co1/3Mn1/3(OH)2The aqueous solution；
(b) aqueous solution for the monohydrate lithium hydroxide that weight concentration is 20% is prepared；
(c) by ternary material precursor Ni1/3Co1/3Mn1/3(OH)2The aqueous solution and monohydrate lithium hydroxide the aqueous solution point
It Yong not be pumped into homogenizer, the rotating speed of mixer is 2500rpm, and mixing time 60min, whipping temp is normal
Temperature, it is mixed evenly, obtains suspension；
(d) suspension is spray-dried, the compressed air pressure of spray dryer is 0.15MPa, temperature at nozzle
For 250 DEG C, obtain matching somebody with somebody lithium mixed powder；
(e) it will be sintered with lithium mixed powder, and first be warming up to 550 DEG C with 2 DEG C/min speed in oxygen atmosphere, perseverance
Temperature sintering 6h, then 880 DEG C are warming up to 2 DEG C/min speed, Isothermal sinter 11h, room temperature is naturally cooled to, obtain nickel cobalt mangaic acid
Lithium anode material LiNi1/3Co1/3Mn1/3O2。
Embodiment 2
A kind of preparation method of nickel-cobalt lithium manganate cathode material, comprises the following steps：
(a) the ternary material precursor Ni that weight concentration is 50% is prepared1/3Co1/3Mn1/3(OH)2The aqueous solution it is water-soluble
Liquid, and to the aqueous solution be ultrasonically treated, supersonic frequency 30KHz, sonication treatment time 30min；
(b) aqueous solution for the monohydrate lithium hydroxide that weight concentration is 25% is prepared, and the aqueous solution is ultrasonically treated,
Supersonic frequency is 40KHz, sonication treatment time 30min；
Step (c), (d), (e) are same as Example 1.
Embodiment 3
A kind of preparation method of nickel-cobalt lithium manganate cathode material, comprises the following steps：
(a) the ternary material precursor Ni that weight concentration is 60% is prepared1/3Co1/3Mn1/3(OH)2The aqueous solution it is water-soluble
Liquid, and to the aqueous solution be ultrasonically treated, supersonic frequency 10KHz, sonication treatment time 75min；
(b) aqueous solution for the monohydrate lithium hydroxide that weight concentration is 30% is prepared, and the aqueous solution is ultrasonically treated,
Supersonic frequency is 20KHz, sonication treatment time 60min；
(c) by ternary material precursor Ni1/3Co1/3Mn1/3(OH)2The aqueous solution and monohydrate lithium hydroxide the aqueous solution point
It is not pumped into delicate metering in homogenizer, tune is provided with the connecting pipeline of precision metering pump and homogenizer
Valve is saved, passes through precision metering pump and governor valve control ternary material precursor and Li mol ratio；The rotating speed of mixer is
1500rpm, mixing time 90min, whipping temp are normal temperature, are mixed evenly, obtain suspension；
(d) suspension is spray-dried, the compressed air pressure of spray dryer is 0.50MPa, temperature at nozzle
For 200 DEG C, obtain matching somebody with somebody lithium mixed powder；
(e) it will be sintered with lithium mixed powder, and first be warming up to 550 DEG C with 2 DEG C/min speed in oxygen atmosphere, perseverance
Temperature sintering 6h, then 900 DEG C are warming up to 2 DEG C/min speed, Isothermal sinter 11h, room temperature is naturally cooled to, obtain nickel cobalt mangaic acid
Lithium anode material LiNi1/3Co1/3Mn1/3O2。
Embodiment 4
A kind of preparation method of nickel-cobalt lithium manganate cathode material, comprises the following steps：
(a) the ternary material precursor Ni that weight concentration is 60% is prepared1/3Co1/3Mn1/3(OH)2The aqueous solution it is water-soluble
Liquid, and to the aqueous solution be ultrasonically treated, supersonic frequency 10KHz, sonication treatment time 75min；
(b) aqueous solution for the lithium carbonate that weight concentration is 30% is prepared, and the aqueous solution is ultrasonically treated, supersonic frequency
Rate is 20KHz, sonication treatment time 60min；
(c) by ternary material precursor Ni1/3Co1/3Mn1/3(OH)2The aqueous solution and lithium carbonate the aqueous solution respectively with essence
Close metering is pumped into homogenizer, be provided with the connecting pipeline of precision metering pump and homogenizer regulating valve and
Check-valves, pass through precision metering pump and governor valve control ternary material precursor and Li mol ratio；The rotating speed of mixer is
4000rpm, mixing time 30min, whipping temp are normal temperature, are mixed evenly, obtain suspension；
(d) suspension is delivered in spray dryer using peristaltic pump and be spray-dried, control spray dryer
Compressed air pressure is 0.75MPa, and wriggling pump discharge is 500mL/min, and temperature is 350 DEG C at nozzle, obtains matching somebody with somebody lithium mixed powder
Body；
(e) it will be put into high temperature rail kiln and be sintered with lithium mixed powder, first with 1.5 DEG C/min's in oxygen atmosphere
Speed is warming up to 450 DEG C, Isothermal sinter 10h, then is warming up to 920 DEG C with 1.5 DEG C/min speed, Isothermal sinter 10h, naturally cold
But to room temperature, nickel-cobalt lithium manganate cathode material LiNi is obtained1/3Co1/3Mn1/3O2。
Embodiment 5
A kind of preparation method of nickel-cobalt lithium manganate cathode material, comprises the following steps：
Step (a), (b), (c) are same as Example 4；
(d) suspension is delivered in spray dryer using peristaltic pump and be spray-dried, control spray dryer
Compressed air pressure is 0.05MPa, and wriggling pump discharge is 800mL/min, and temperature is 300 DEG C at nozzle, obtains matching somebody with somebody lithium mixed powder
Body；
(e) it will be put into high temperature rail kiln and be sintered with lithium mixed powder, first with 3 DEG C/min speed in oxygen atmosphere
Rate is warming up to 510 DEG C, Isothermal sinter 8h, then is warming up to 990 DEG C with 3 DEG C/min speed, Isothermal sinter 15h, naturally cools to
Room temperature, obtain nickel-cobalt lithium manganate cathode material LiNi1/3Co1/3Mn1/3O2。
Comparative example 1
A kind of preparation method of nickel-cobalt lithium manganate cathode material, as different from Example 1 step (a) and (b), remaining step
It is rapid same as Example 1.
In comparative example 1, by the way of dry method batch mixing, not obtained aqueous solution, directly by ternary material precursor and Dan Shui
Lithium hydroxide is mixed.
Comparative example 2
A kind of preparation method of nickel-cobalt lithium manganate cathode material, as different from Example 1 step (a) and (b), remaining step
It is rapid same as Example 1.
In comparative example 2, ternary material precursor Ni1/3Co1/3Mn1/3(OH)2The aqueous solution weight concentration be 30%；
Monohydrate lithium hydroxide aqueous solution weight concentration is 60%.
Comparative example 3
A kind of preparation method of nickel-cobalt lithium manganate cathode material, step (e), remaining step are equal as different from Example 1
It is same as Example 1.
In comparative example 3, in oxygen atmosphere, lithium mixed powder will be matched somebody with somebody and sinter 18h at 990 DEG C, room temperature is naturally cooled to, obtain
To nickel-cobalt lithium manganate cathode material.
Respectively using the nickel-cobalt lithium manganate cathode material obtained by embodiment 1-5 and comparative example 1-3 as positive pole, lithium piece is negative pole
Button cell is assembled into, conductive agent uses Super " p ", barrier film celgard2300, and electrolyte is led from 1mol/L LiPF6
Electric salt and DMC：DEC：EC (wt%)=1：1：1 solvent.Electrochemical property test is carried out to lithium ion battery, test result is such as
Shown in table 1.
The electrochemical property test result of table 1
As can be seen from Table 1, nickel-cobalt lithium manganate cathode material initial discharge specific capacity provided by the invention is higher, circulates the longevity
Life length, stability are good.Fig. 1 and Fig. 2 respectively illustrates the circulation time of the nickel-cobalt lithium manganate cathode material of embodiment 1 and embodiment 4
Number-specific discharge capacity figure.Nickel-cobalt lithium manganate cathode material provided by the invention is can be seen that with reference to table 1 and Fig. 1 and Fig. 2
Preparation method, better than existing dry method mixing method, and in the range of specific concentration of aqueous solution, obtained nickle cobalt lithium manganate
Positive electrode, there is more excellent chemical property.
In addition, also test respectively tap density with lithium mixed powder obtained by embodiment 1-5 and comparative example 1-3 and
Specific surface area, and nickel-cobalt lithium manganate cathode material LiNi1/3Co1/3Mn1/3O2The tap density and specific surface area of powder, test
As a result it is as shown in table 2.
The tap density of table 2 and specific surface area test result
It should be noted that in the present invention to lithium ion battery carry out chemical property, and the tap density of material and
The test that the test of specific surface area is carried out using the test mode and equipment commonly used in existing technology.
As can be seen from Table 2, nickel-cobalt lithium manganate cathode material granularity controllability provided by the invention is good, tap density compared with
Height, specific surface area are suitable.Fig. 3 and Fig. 4 respectively illustrates the SEM of the nickel-cobalt lithium manganate cathode material of embodiment 1 and comparative example 1
Figure, it can be seen that the nickel-cobalt lithium manganate cathode material grain diameter of the present invention is visibly homogeneous, particle size distribution range is small.
Further speaking, the preparation method of nickel-cobalt lithium manganate cathode material provided by the invention, the mode phase with existing dry method batch mixing
Than enhancing the mixing uniformity of ternary material precursor and Li source compound, obtained good product consistency.Also, in spy
It is fixed and in the range of specific concentration of aqueous solution and by the way of segmented sintering, it can further improve particle diameter point
The uniformity of cloth, the controllability of particle diameter is good, while can manufacture production excellent electrochemical performance, the lithium ion battery of high-quality.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of preparation method of nickel-cobalt lithium manganate cathode material, it is characterised in that comprise the following steps：
(a) aqueous solution for the ternary material precursor that weight concentration is 45%~60% is prepared；
(b) aqueous solution for the Li source compound that weight concentration is 20%~30% is prepared；
(c) by the aqueous solution of the aqueous solution of the ternary material precursor and Li source compound respectively with being pumped into mixer
In, it is mixed evenly, obtains suspension；
(d) suspension is spray-dried, obtains matching somebody with somebody lithium mixed powder；
(e) it is sintered described with lithium mixed powder, obtains nickel-cobalt lithium manganate cathode material.
2. the preparation method of nickel-cobalt lithium manganate cathode material according to claim 1, it is characterised in that right in step (a)
The aqueous solution of the ternary material precursor is ultrasonically treated, and supersonic frequency is 10~30KHz, and sonication treatment time is 20~
90min。
3. the preparation method of nickel-cobalt lithium manganate cathode material according to claim 1, it is characterised in that right in step (b)
The aqueous solution of the Li source compound is ultrasonically treated, and supersonic frequency is 20~40KHz, and sonication treatment time is 30~
100min。
4. the preparation method of nickel-cobalt lithium manganate cathode material according to claim 1, it is characterised in that in step (c), institute
It is precision metering pump to state pump, and ternary material precursor and the mol ratio of Li source compound are controlled by the precision metering pump；
Preferably, the mixer is homogenizer, and the rotating speed of mixer is 1500~4000rpm, mixing time is 30~
120min, whipping temp are normal temperature；
Preferably, the pump is connected with mixer by pipeline, and non-return is provided with the connecting pipeline of the pump and mixer
Valve and/or regulating valve.
5. the preparation method of nickel-cobalt lithium manganate cathode material according to claim 1, it is characterised in that, will in step (d)
The suspension is delivered in spray dryer using peristaltic pump to be spray-dried, and controls the compressed air pressure of spray dryer
Power is 0.05~0.75MPa, and wriggling pump discharge is 200~800mL/min, and temperature is 200 DEG C~350 DEG C at nozzle, and is passed through
Control the grain size size of the pressure adjustment powder of compressed air；
Preferably, the average grain diameter with lithium mixed powder is 1~20 μm.
6. the preparation method of nickel-cobalt lithium manganate cathode material according to claim 1, it is characterised in that, will in step (e)
Described be put into lithium mixed powder in high temperature rail kiln is sintered, first with 1~3 DEG C/min speed in air or oxygen atmosphere
Rate is warming up to 450~550 DEG C, 6~10h of Isothermal sinter, then is warming up to 880~1000 DEG C with 1~3 DEG C/min speed, constant temperature
10~16h is sintered, room temperature is naturally cooled to, obtains nickel-cobalt lithium manganate cathode material.
7. the preparation method of the nickel-cobalt lithium manganate cathode material according to any one of claim 1~6, it is characterised in that institute
It is LiNi to state nickel-cobalt lithium manganate cathode material1/3Co1/3Mn1/3O2；
Preferably, the ternary material precursor is Ni1/3Co1/3Mn1/3(OH)2；
Preferably, the Li source compound is at least one of monohydrate lithium hydroxide, anhydrous lithium hydroxide or lithium carbonate.
8. a kind of anode material for lithium-ion batteries, it is characterised in that by the preparation side according to any one of claim 1~7
The nickel-cobalt lithium manganate cathode material that method obtains is as anode material for lithium-ion batteries.
9. anode material for lithium-ion batteries according to claim 8, it is characterised in that the nickel-cobalt lithium manganate cathode material
Average grain diameter be 2~10 μm, specific surface area is 0.3~0.9m2/g。
A kind of 10. lithium ion battery, it is characterised in that including housing, the positive pole being placed in housing, negative pole, barrier film and electrolyte,
For the barrier film between the positive pole and negative pole, the positive pole includes the lithium ion cell positive material described in claim 8 or 9
Material.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598425A (en) * | 2018-04-25 | 2018-09-28 | 北方奥钛纳米技术有限公司 | Coat the preparation method and lithium battery of the nickle cobalt lithium manganate of aluminium |
| CN108598467A (en) * | 2018-05-24 | 2018-09-28 | 北方奥钛纳米技术有限公司 | The preparation method and alumina-coated nickel-cobalt lithium manganate cathode material and lithium ion battery of alumina-coated nickel-cobalt lithium manganate cathode material |
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| WO2021015679A1 (en) * | 2019-07-19 | 2021-01-28 | Enwair Enerji Teknolojileri A.S. | Production method for li-rich cathode material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956242A (en) * | 2005-10-28 | 2007-05-02 | 比亚迪股份有限公司 | Preparation method of ternary compound potassium ion battery plus plate material |
| CN104157871A (en) * | 2014-08-18 | 2014-11-19 | 宁波金和新材料股份有限公司 | Preparation method of high-capacity lithium battery ternary positive electrode material |
| CN104882599A (en) * | 2015-05-19 | 2015-09-02 | 华南理工大学 | Lithium-rich ternary cathode material for high-capacity lithium ion battery and preparation method of lithium-rich ternary cathode material |
| CN105375020A (en) * | 2015-11-28 | 2016-03-02 | 中信大锰矿业有限责任公司大新锰矿分公司 | Preparation method of spherical lithium nickel cobalt manganese oxide precursor mixture |
| CN105655577A (en) * | 2016-04-14 | 2016-06-08 | 哈尔滨工业大学 | Method for improving high-temperature solid-phase reaction of anode material of lithium ion battery by wet lithium mixing |
| CN106684350A (en) * | 2016-12-21 | 2017-05-17 | 桑顿新能源科技有限公司 | Preparation method of lithium nickel manganese oxide serving as high-voltage positive electrode material |
-
2017
- 2017-08-01 CN CN201710645537.7A patent/CN107464929B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956242A (en) * | 2005-10-28 | 2007-05-02 | 比亚迪股份有限公司 | Preparation method of ternary compound potassium ion battery plus plate material |
| CN104157871A (en) * | 2014-08-18 | 2014-11-19 | 宁波金和新材料股份有限公司 | Preparation method of high-capacity lithium battery ternary positive electrode material |
| CN104882599A (en) * | 2015-05-19 | 2015-09-02 | 华南理工大学 | Lithium-rich ternary cathode material for high-capacity lithium ion battery and preparation method of lithium-rich ternary cathode material |
| CN105375020A (en) * | 2015-11-28 | 2016-03-02 | 中信大锰矿业有限责任公司大新锰矿分公司 | Preparation method of spherical lithium nickel cobalt manganese oxide precursor mixture |
| CN105655577A (en) * | 2016-04-14 | 2016-06-08 | 哈尔滨工业大学 | Method for improving high-temperature solid-phase reaction of anode material of lithium ion battery by wet lithium mixing |
| CN106684350A (en) * | 2016-12-21 | 2017-05-17 | 桑顿新能源科技有限公司 | Preparation method of lithium nickel manganese oxide serving as high-voltage positive electrode material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598425A (en) * | 2018-04-25 | 2018-09-28 | 北方奥钛纳米技术有限公司 | Coat the preparation method and lithium battery of the nickle cobalt lithium manganate of aluminium |
| CN108598467A (en) * | 2018-05-24 | 2018-09-28 | 北方奥钛纳米技术有限公司 | The preparation method and alumina-coated nickel-cobalt lithium manganate cathode material and lithium ion battery of alumina-coated nickel-cobalt lithium manganate cathode material |
| CN108767221A (en) * | 2018-05-24 | 2018-11-06 | 北方奥钛纳米技术有限公司 | modified anode material of lithium battery, preparation method and lithium ion battery |
| CN109704415A (en) * | 2018-12-26 | 2019-05-03 | 惠州亿纬锂能股份有限公司 | A kind of lithium-rich manganese-based presoma, and preparation method thereof and lithium-rich manganese-based anode material |
| CN109817969A (en) * | 2018-12-29 | 2019-05-28 | 北方奥钛纳米技术有限公司 | A method of preparing ternary cell positive material |
| WO2021015679A1 (en) * | 2019-07-19 | 2021-01-28 | Enwair Enerji Teknolojileri A.S. | Production method for li-rich cathode material |
| CN111908519A (en) * | 2020-07-24 | 2020-11-10 | 四川长虹电器股份有限公司 | High-capacity nickel-rich precursor, positive electrode material and preparation method thereof |
| CN115974171A (en) * | 2022-09-29 | 2023-04-18 | 宁夏汉尧富锂科技有限责任公司 | Cathode material prepared by wet lithium-poor process and preparation method thereof |
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