CN106654254A - Lithium battery positive electrode material and preparation method thereof - Google Patents
Lithium battery positive electrode material and preparation method thereof Download PDFInfo
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- CN106654254A CN106654254A CN201710084876.2A CN201710084876A CN106654254A CN 106654254 A CN106654254 A CN 106654254A CN 201710084876 A CN201710084876 A CN 201710084876A CN 106654254 A CN106654254 A CN 106654254A
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- microemulsion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a lithium battery positive electrode material and a preparation method thereof, and relates to the field of a lithium ion battery. The preparation method of the lithium battery positive electrode material comprises the steps of mixing first microemulsion containing lithium acetate, manganese acetate and nickel acetate and second microemulsion containing carbonate to obtain third microemulsion; and adding water into the third microemulsion, performing solid-liquid separation and washing to obtain a solid, and calcinating the dried solid. The lithium battery positive electrode material is prepared by the preparation method of the lithium battery positive material. Two pieces of microemulsion respectively solubilized with reactants are mixed, at the moment, the two reactants are exchanged and transferred in micelle due to collision, fusing, separation, recombination and the like among micelle particles to cause intra-nuclear chemical reaction and generate a crystal nucleus, and the crystal nucleus is gradually grown up to prepare a nanoscale material, the nanoscale material is small in grain size, the lithium ion diffusion rate is high, and the rate performance is excellent.
Description
Technical field
The present invention relates to field of lithium ion battery, in particular to a kind of anode material of lithium battery and preparation method thereof.
Background technology
Lithium ion battery is a kind of rechargeable battery, has obtained relatively broad application at present.Lithium ion battery one
As by positive pole, negative pole, barrier film, electrolyte and battery container etc. part constitute, the cost of wherein positive electrode accounts for battery 40%
More than, but the specific capacity of positive electrode is but well below the specific capacity of negative material, thus lithium battery has under study for action weight
The using value wanted.
(typical chemical formula is xLi to lithium-rich manganese-based anode material2MnO3-(1-x)LiMO2, wherein M=Ni, Co, Mn etc. are several
The combination of transition metal), it is α-NaFeO2The side's layer structure of type six (space group R-3m (166)), its discharge capacity is up to
250mAh g-1, thus receive much concern in battery research liquid in recent years.More material is studied in lithium-rich manganese-based anode material
Material chemical formula is 0.6Li2MnO3-0.4LiNi0.5Mn0.5O2, reason is that it has higher specific discharge capacity, and constitutional chemistry unit
Without cobalt element in element, thus it is safe and nontoxic.But lithium-rich manganese-based anode material there is also the shortcoming of high rate performance difference, restriction
The industrial applications of above-mentioned material.
The content of the invention
It is an object of the invention to provide a kind of anode material of lithium battery and preparation method thereof, it is intended to improve existing richness
Lithium manganese-based anode material 0.6Li2MnO3-0.4LiNi0.5Mn0.5O2The shortcoming of high rate performance difference.
The present invention provides a kind of technical scheme：
A kind of preparation method of anode material of lithium battery, it includes：By containing lithium acetate, manganese acetate, nickel acetate first
Microemulsion is mixed to get the 3rd microemulsion with the stirring of the second microemulsion containing carbonate.Water is added into the 3rd microemulsion, Jing
Separation of solid and liquid, washing obtain solid, and dried solid is calcined.
A kind of anode material of lithium battery, is prepared from by the preparation method of above-mentioned anode material of lithium battery.
The beneficial effect of anode material of lithium battery provided in an embodiment of the present invention and preparation method thereof is：Acetic acid will be contained
Lithium, manganese acetate, the first microemulsion of nickel acetate are mixed to get the 3rd microemulsion with the stirring of the second microemulsion containing carbonate.Two
Individual solubilising respectively has the microemulsion mixing of reactant, due to the collision between microemulsion particles, fusion, separation and restructuring etc., makes reaction
Thing is intercoursed in micro emulsion, transmitted；Cause chemical reaction in core, produce nucleus, gradually grow up, then by drying and calcination system
The nano_scale particle for obtaining.Its particle diameter is little, and the diffusion rate of lithium ion is big, and high rate performance is improved.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the XRD of the anode material of lithium battery that the embodiment of the present invention one is provided；
Fig. 2 is the SEM figures of the solid that the embodiment of the present invention one is provided；
Fig. 3 is anode material of lithium battery the filling first under 2.0～4.8V voltage ranges that the embodiment of the present invention one is provided
Discharge curve；
Fig. 4 is that the anode material of lithium battery that the embodiment of the present invention one is provided is forthright again under 2.0～4.8V voltage ranges
Can figure.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with embodiment to this
Bright embodiment is described in detail, it will be appreciated by those skilled in the art that the following example is merely to illustrate this
It is bright, and be not construed as limiting the scope of the present invention.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, being can pass through the conventional product that commercially available purchase is obtained
Product.
Anode material of lithium battery of the embodiment of the present invention and preparation method thereof is specifically described below.
The invention provides a kind of preparation method of anode material of lithium battery, it includes：
Will be mixed with the stirring of the second microemulsion containing carbonate containing lithium acetate, manganese acetate, the first microemulsion of nickel acetate
Conjunction obtains the 3rd microemulsion.Water is added into the 3rd microemulsion, Jing separation of solid and liquid, washing obtain solid, to dried described
Solid is calcined.
Preferably, preparing the method for the first microemulsion includes：It is 1.84-2.00 by mol ratio：0.8：0.2 lithium acetate,
Manganese acetate, nickel acetate are dissolved in water and obtain the first water phase.The first oil phase, first surface activating agent are added to the first water and stir.
It should be noted that in other embodiment in the present invention, the first oil phase, first surface activating agent can be added
Enter the first water and mutually stir to obtain the first emulsion.
In the present invention, reactant is reacted in the O/W systems of the 3rd microemulsion, and the first oil phase is added into the first water
Mutually can be formed directly in O/W systems.Correspondingly, if the first water is added into the first oil phase can be initially formed W/O systems, through continuous
O/W systems can be re-formed after stirring.
In preferred embodiments of the present invention, lithium acetate, manganese acetate, the mol ratio of nickel acetate are 1.92：0.8：0.2.
Preferably, the first water phase, the first oil phase, the volume ratio of first surface activating agent are 90-95：9-4：1.In the present invention
The first water phase, the first oil phase, the volume ratio of first surface activating agent are 92 in preferred embodiment：7：1, under the ratio, the
One microemulsion decentralization is maximum, stability highest, the obtained micro emulsion highest of stirring.
Preferably, the first microemulsion also includes micro cosurfactant, and in the present invention, cosurfactant is usual
For short chain alcohol, atmosphere, fatty alcohol or other weaker amphoteric compounds.Cosurfactant has the effect of stabilising system, increases
The mobility of interfacial film；Adjustment surfactant HLB value.Additionally, cosurfactant the first microemulsion of reduction is required when generating
The bending energy wanted, makes micro emulsion drop easily generate.
Preferably, preparing the method for the second microemulsion includes, carbonate is dissolved in into water and obtains the second water phase；To the second water phase
Add the second oil phase, second surface activating agent and stir.First water phase, the second oil phase, the volume ratio of second surface activating agent are
90-95：9-4：1.The first water phase, the first oil phase, the volume ratio of first surface activating agent are in preferred embodiments of the present invention
92：7：1.
Above-mentioned carbonate is carbonate soluble in water, it is preferable that in the present embodiment using sodium carbonate.
Correspondingly, in preferred embodiments of the present invention, the second microemulsion also includes micro cosurfactant.
Preferably, the first oil phase and the second oil-phase component are identical, and are selected from isopropyl myristate, Glycerin, mixed triester with caprylic acid capric acid
In one kind.In other embodiments of the invention, the first oil phase and the second oil phase can also be straight-chain hydrocarbons of C6-C8 etc..
Preferably, first surface activating agent is identical with second surface bioactive agent composition, and is span80 and tween80 groups
Into complexed surfactant.In other embodiments of the invention, first surface activating agent and second surface activating agent also may be used
Selected from butanedioic acid -2- ethylhexyl sodium sulfonates, cetyl trimethylammonium bromide, polyethenoxy ether class etc..
In microemulsion system, surfactant increases droplet surface activity, reduces oil water interfacial tension, prevents drop from gathering
Collection, improves stability.
Preferably, in the 3rd microemulsion, provide by the carbanion of the second microemulsion offer and by the first microemulsion
The mol ratio of manganese ion is 0.8：2.00-2.25.In preferred embodiments of the present invention, carbanion and manganese ion mole
Than for 0.8：2.16.
Preferably, the first microemulsion is mixed under 60 DEG C of water-baths or oil bath with the second microemulsion high-speed stirred and carries out.
Preferably, in the step of water is added into the 3rd microemulsion, the volume for adding water is the 1- of the 3rd microemulsion volume
1.2 times.Water is added into the 3rd microemulsion so as to breakdown of emulsion, separation water phase and oil phase.Solid is obtained after filtration, solid is carried out
It is dried after washing, ethanol washing.In the present embodiment, the volume for adding water is 1-1.1 times of the 3rd microemulsion volume.
Preferably, drying solid is carried out under vacuum.
In the present embodiment, solid is calcined is carried out in atmosphere, specifically, is calcined 5 hours under the conditions of 500 DEG C,
Calcine 5 hours at 750 DEG C, calcine 10 hours under the conditions of 900 DEG C.Calcine under these conditions, realize that lithium ion, manganese ion are moved
The decomposition with acetate is moved, synthesizes crystalline form α-NaFeO2The anode material of lithium battery of the side's layer structure of type six.
Microemulsion is a kind of transparent or translucent, low-viscosity, isotropism and thermodynamically stable single ball
Shape drop.Microemulsion has particle diameter little, transparent, the special benefits such as stable.Under this special microenvironment, have in microemulsion
Multiple " microreactors ", for the reaction between material ideal reaction medium is provided.
Microemulsion particles in microemulsion ceaselessly doing Brownian movement, different particles when colliding with each other, surface-active
Agent is mutually penetrated into the hydrocarbon chain of cosurfactant, and at the same time, the material in different microemulsion particles enters another particle
In carry out mass exchange, occur chemical reaction be obtained nano-powder anode material of lithium battery.
The anode material of lithium battery of nano-powder, particle diameter is little, and the diffusion rate of lithium ion is big, and high rate performance is improved.
The invention provides a kind of anode material of lithium battery, by the preparation method preparation of above-mentioned anode material of lithium battery
Into.
The anode material of lithium battery that the present invention is provided is that (typical chemical formula is xLi to lithium-rich manganese-based anode material2MnO3-(1-
x)Li Ni O2, it is α-NaFeO2The side's layer structure of type six (space group R-3m (166)), specific discharge capacity is up to 250mAh g-1, thus receive much concern in anode material of lithium battery field.The high rate performance that the present invention is provided preferably anode material of lithium battery tool
It is made up of below formula：0.6Li2MnO3-0.4LiNi0.5Mn0.5O2, its particle diameter is little, and the diffusion rate of lithium ion is big, forthright again
Can be good.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of preparation method of anode material of lithium battery, and it is comprised the following steps：
The preparation of the first microemulsion：Take 92mmol lithium acetates, 40mmol manganese acetates, 10mmol nickel acetates and be dissolved in 500ml
The first water phase is obtained after ionized water stirring mixing.The water of 90ml first is taken in beaker, first oil phase of 9ml is added in beaker
And be stirred continuously, in the present embodiment, the first oil phase is isopropyl myristate.1ml first surfaces activity is added in beaker
Agent is simultaneously stirred continuously, and in the present embodiment, first surface activating agent is the complexed surfactant of span80 and tween80.Will
First microemulsion stirs under magnetic stirring.
The preparation of the second microemulsion：Take 100mmol sodium carbonate be dissolved in 500ml deionized waters stirring mixing after obtain the second water
Phase, takes the water of 90ml second in beaker, second oil phase of 9ml is added in beaker and is stirred continuously, in the present embodiment, the
Two oil phases are isopropyl myristate.1ml second surfaces activating agent is added in beaker and is stirred continuously, in the present embodiment,
Second surface activating agent is the complexed surfactant of span80 and tween80.Second microemulsion is stirred under magnetic stirring
Uniformly.
First microemulsion obtains the 3rd microemulsion after mixing with the second microemulsion, the 3rd microemulsion moves into 60 DEG C of water heating kettles
In, stir under the mixing speed of 500r/min, there is chemical reaction and generate precipitation.
100ml deionized waters, concussion mixing, the 3rd microemulsion breakdown of emulsion are added in the 3rd microemulsion.Separation water phase and oil
Phase, mutually carries out being filtrated to get solid to water, and solid is washed with deionized 3 times, and ethanol is washed 2 times, and in vacuum drying chamber
In be vacuum dried 10h at 100 DEG C.
500 DEG C of high-temperature calcination 5h of above-mentioned solid, 750 DEG C of high-temperature calcination 5h, 900 DEG C of high-temperature calcination 10h are obtained into lithium battery
Positive electrode 0.6Li2MnO3-0.4LiNi0.5Mn0.5O2。
Embodiment two
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
First water by 96mmol lithium acetates, 40mmol manganese acetates, 10mmol nickel acetates by being dissolved in 500ml deionized waters
Stirring is mixed to prepare.In first microemulsion the first water phase, the first oil phase, the volume of first surface activating agent be respectively 92ml,
7ml、1ml。
Second water is mixed to prepare by the way that 108mmol sodium carbonate is dissolved in into the stirring of 500ml deionized waters.In second microemulsion
Second water phase, the second oil phase, the volume of second surface activating agent are respectively 92ml, 7ml, 1ml.
Embodiment three
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
First water by 100mmol lithium acetates, 40mmol manganese acetates, 10mmol nickel acetates by being dissolved in 500ml deionizations
Water stirring is mixed to prepare.In first microemulsion the first water phase, the first oil phase, the volume of first surface activating agent be respectively 95ml,
4ml、1ml。
Second water is mixed to prepare by the way that 112.5mmol sodium carbonate is dissolved in into the stirring of 500ml deionized waters.Second microemulsion
In the second water phase, the second oil phase, the volume of second surface activating agent be respectively 95ml, 4ml, 1ml.
Example IV
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
The first water phase, the first oil phase, the volume of first surface activating agent are respectively 95ml, 4ml, 1ml in first microemulsion.
The second water phase, the second oil phase, the volume of second surface activating agent are respectively 92ml, 7ml, 1ml in second microemulsion.
Embodiment five
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
First oil phase and the second oil phase are Glycerin, mixed triester with caprylic acid capric acid.
Embodiment six
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
First surface activating agent and second surface activating agent are butanedioic acid -2- ethylhexyl sodium sulfonates.
Embodiment seven
The present embodiment provides a kind of preparation method of anode material of lithium battery, its lithium battery anode provided with embodiment one
The preparation method of material is distinguished：
In the preparation process of the first microemulsion, the first microemulsion also includes cosurfactant fatty alcohol, specifically, to the
Micro fatty alcohol is added in one water phase and is stirred continuously.
Correspondingly, in the present embodiment, the second microemulsion also includes micro cosurfactant fatty alcohol.
Test example 1
The anode material of lithium battery that embodiment one is prepared is detected.Using X ' the pert TRO of Philips Corporate
MPD type polycrystalline turns target x-ray diffractometer (Cu target K alpha ray λ=0.15406nm), Ni filter plates, and tube current is 20mA, and pipe is electric
Press as 20kV, θ=10～80 ° of scanning angle 2,8 ° of min of sweep speed-1The lithium battery anode material that embodiment one is prepared
Material carries out X-ray diffraction, obtains XRD spectrum as shown in Figure 1.
The anode material of lithium battery of embodiment one is entered using the S-4800 types SEM of HIT
Row scanning electron microscope analysis, the result of the ESEM for obtaining (SEM) is as shown in Figure 2.
As can be seen from Figure 1 the main diffraction peak of the anode material of lithium battery of embodiment one can be indexed as α-NaFeO2
The side's layer structure of type six (space group R-3m (166)), but there are some to index as Li between 21 ° to 25 °2MnO3(space
Group C2/m) superlattices weak peak, these weak peaks are by Li+And Mn4+Ion causes in the superlattices arrangement of transition metal layer, shows to close
Into material be typical richness lithium material.And the division of the peak of XRD diffraction maximums 006 and 012 is obvious, show that the material for synthesizing has good
Layer structure.
As can be seen from Figure 2 the solid of the present embodiment one is micron ball, and its sphericity is good, and size is homogeneous.
The chemical property of anode material of lithium battery is characterized using CR2032 types button cell.First, by activity
Material, conductive agent acetylene black, binding agent (PVDF mass fractions 10%) are by 80：13：7 mass ratio mixing, is subsequently adding appropriate
1-METHYLPYRROLIDONE be solvent, stir.The slip of gained is coated in the lower 120 DEG C of dryings of vacuum condition on aluminium foil
The disk of a diameter of 14mm is gone out after 10h with sheet-punching machine, is compacted under the conditions of 20Mpa, obtain button cell positive plate.Full of argon
In the glove box of gas, with lithium metal as negative pole, the LiPF6 of 1mol/L is dissolved in EC-DMC, and (volume ratio is 1：1) mixed solution
Middle as electrolyte, Celgard2400 microporous polypropylene membranes are barrier film, and the order assembled according to button cell is obtained button electricity
Pond.Using the BTS test systems of Shenzhen Neware companies, at room temperature 2.0～4.8V carries out constant current charge-discharge survey to the present embodiment
Examination, wherein 1C=200m Ah g-1.Fig. 3 is the first charge-discharge curve map of button cell 0.1C, and Fig. 4 is the multiplying power of button cell
Performance map.
Fig. 4 can be seen that the initial charge curve of the anode material of lithium battery that embodiment one is provided has one in 4.4V or so
Typical platform, shows that the material for synthesizing is typical lithium-rich anode material, and first discharge specific capacity is 267.8m Ah under its 0.1C
g-1.As can be seen from Figure 4 above-mentioned material is 269.2m Ah g in the averaged discharge specific capacity of 0.1C-1, averagely putting during 10C
Electric specific capacity is 108.1m Ah g-1, capability retention 97.4%, first discharge specific capacity is 205.3m Ah g during 0.5C-1,
Specific discharge capacity is 172.3m Ah g after circulation time-1, capability retention 83.9%.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of anode material of lithium battery, it is characterised in that it includes：Will be containing lithium acetate, manganese acetate, acetic acid
First microemulsion of nickel is mixed to get the 3rd microemulsion with the stirring of the second microemulsion containing carbonate, to the 3rd microemulsion
Interior addition water, Jing separation of solid and liquid, washing obtain solid, and the dried solid is calcined.
2. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that prepare first micro emulsion
The method of liquid includes, is 1.84-2.00 by mol ratio：0.8：0.2 lithium acetate, the manganese acetate, the nickel acetate are molten
The first water phase is obtained in water；The first oil phase, first surface activating agent are added to first water and stir；First water
Phase, first oil phase, the volume ratio of the first surface activating agent are 90-95：9-4：1.
3. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that prepare second micro emulsion
The method of liquid includes, carbonate is dissolved in into water and obtains the second water phase；The second oil phase, second surface are added to second water to live
Property agent is simultaneously stirred；The second water phase, second oil phase, the volume ratio of the second surface activating agent are 90-95：9-4：1.
4. the preparation method of the anode material of lithium battery according to claim 1-3 any one, it is characterised in that first is oily
It is mutually identical with the second oil-phase component, and the one kind being selected from isopropyl myristate, Glycerin, mixed triester with caprylic acid capric acid.
5. the preparation method of anode material of lithium battery according to claim 4, it is characterised in that first surface activating agent and
Second surface bioactive agent composition is identical, and is the complexed surfactant of span80 and tween80 compositions.
6. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that in the 3rd microemulsion
In, the carbanion provided by second microemulsion is with the mol ratio of the manganese ion provided by first microemulsion
0.8：2.00-2.25.
7. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that first microemulsion,
Second microemulsion also contains cosurfactant.
8. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that to the 3rd microemulsion
In the step of interior addition water, the volume for adding water is 1-1.2 times of the 3rd microemulsion volume.
9. the preparation method of anode material of lithium battery according to claim 1, it is characterised in that the drying solid is true
Carry out under empty condition.
10. a kind of anode material of lithium battery, the preparation method system of the anode material of lithium battery by described in any one of claim 1-9
It is standby to form.
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| CN107394175A (en) * | 2017-07-31 | 2017-11-24 | 天津银隆新能源有限公司 | Rear-earth-doped ternary material and preparation method thereof |
| CN110165166A (en) * | 2019-05-13 | 2019-08-23 | 北京石油化工学院 | A kind of method of microemulsion assisted in situ coated lithium ion battery positive electrode |
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| US20160351943A1 (en) * | 2015-06-01 | 2016-12-01 | Energy Power Systems LLC | Nano-engineered coatings for anode active materials, cathode active materials, and solid-state electrolytes and methods of making batteries containing nano-engineered coatings |
| CN104993123A (en) * | 2015-06-02 | 2015-10-21 | 中国东方电气集团有限公司 | Lithium ion battery LiNixCoyMn1-x-yO2 anode material reverse microemulsion assisted preparation method |
| CN105304893A (en) * | 2015-09-25 | 2016-02-03 | 湖北宇电能源科技股份有限公司 | Preparation method of lithium ion battery anode active material lithium nickel manganese oxide |
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| CN110165166A (en) * | 2019-05-13 | 2019-08-23 | 北京石油化工学院 | A kind of method of microemulsion assisted in situ coated lithium ion battery positive electrode |
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