CN106684343A - Lithium titanate/carbon composite material and preparation method therefor, and lithium ion battery - Google Patents
Lithium titanate/carbon composite material and preparation method therefor, and lithium ion battery Download PDFInfo
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- CN106684343A CN106684343A CN201510768356.4A CN201510768356A CN106684343A CN 106684343 A CN106684343 A CN 106684343A CN 201510768356 A CN201510768356 A CN 201510768356A CN 106684343 A CN106684343 A CN 106684343A
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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
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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- H—ELECTRICITY
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- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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 discloses a lithium titanate/carbon composite material and a preparation method therefor, and a lithium ion battery. The preparation method for the lithium titanate/carbon composite material comprises the steps of adding hydrogen peroxide and titanium carbide powder into a container and stirring uniformly; drying; and mixing the obtained powder with lithium hydroxide at the ratio of (4.5-5.5) to 4, and then calcining in an argon atmosphere at a temperature of 600-800 DEG C to obtain the lithium titanate/carbon composite material. By optimizing the performance of the electrode material, the improvement of the rate capability and cycling stability of the lithium ion battery are realized. The invention also provides the lithium ion battery which is prepared from the lithium titanate/carbon composite material and lithium iron phosphate; and by optimizing the ratio of the positive electrode to the negative electrode, the assembled lithium iron phosphate-lithium titanate battery has excellent rate capability and high cycling stability.
Description
Technical field
The present invention relates to field of lithium ion battery, more particularly to a kind of metatitanic acid lithium/carbon composite material and its preparation side
Method and lithium ion battery.
Background technology
With the continuous popularization of new-energy automobile, market is for Vehicular battery has the long life and quickly fills
The demand more and more higher of electric energy power.Fuel vehicle is compared, electric automobile has the restriction of course continuation mileage, and this is required
To be charged when long range is travelled.Lithium ion battery due to its height security and good circulation it is steady
It is qualitative, have been widely used for electric automobiles.Ferric phosphate lithium cell is due to the security of its height and good
Cyclical stability, have been widely used for electric automobiles, but existing LiFePO4-graphite cell is present
High rate performance is good, cannot large current charge shortcoming, the time for completing once to charge generally requires several little
When, this constrains the popularization of electric automobile significantly far beyond the tolerance range of user.Therefore select and follow
The high electrode material of ring good stability, high rate performance carrys out assembled battery and just seems particularly significant.Meanwhile, big
During rate charge-discharge, because graphite cathode can not quickly finish embedding lithium/de- lithium, cause capacity decline, temperature rise
Substantially, so as to bringing certain potential safety hazard.
Lithium titanate is the stratified material of a kind of zero strain, memory-less effect, used as its stable circulation of electrode material
The good, high rate performance of property is high, and these problems can be to a certain degree being solved by using lithium titanate material.But,
Due to lithium titanate material conductance itself it is not high, it is often necessary to add a large amount of conductive agents, cause available capacity
Certain reduction.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of metatitanic acid lithium/carbon composite material
And preparation method thereof and lithium ion battery, by optimize electrode material performance it is forthright again to realize lithium ion battery
Can improve and cyclical stability is improved, can greatly shorten the charging interval of battery, so that user is growing
When distance uses electric motor car, can at short notice complete the charging continuation of the journey metatitanic acid lithium/carbon composite material is,
Aim to solve the problem that existing lithium ion battery there is a problem of high rate performance it is not good, cannot large current charge.
A kind of preparation method of metatitanic acid lithium/carbon composite material, wherein, comprise the following steps：
Hydrogen peroxide and titanium carbide powder are added in container, are stirred；
Drying；
By the powder for obtaining and lithium hydroxide by 4.5～5.5:After 4 ratio mixing, in argon gas atmosphere
600～800 DEG C of calcinings, obtain metatitanic acid lithium/carbon composite material.
The preparation method of described metatitanic acid lithium/carbon composite material, wherein, the quality of hydrogen peroxide and titanium carbide powder
Than for 5～10:1.
The preparation method of described metatitanic acid lithium/carbon composite material, wherein, the mass concentration of hydrogen peroxide is 10～30%；
Calcination time is 2h-4h.
A kind of metatitanic acid lithium/carbon composite material, wherein, using the preparation of metatitanic acid lithium/carbon composite material as above
Method is prepared.
A kind of lithium ion battery, including positive plate, negative plate, barrier film, electrolyte, wherein, the lithium from
Using metatitanic acid lithium/carbon composite material as above as negative active core-shell material in sub- battery.
Described lithium ion battery, wherein, the lithium ion battery is using LiFePO4 as positive-active material
Material.
Described lithium ion battery, wherein, the positive electrode in the positive plate include positive electrode active materials,
Conductive agent and binding agent；The weight of positive electrode active materials is the 90～95% of positive electrode gross weight, conductive agent
Weight is the 2.5～5% of anode material gross weight, and weight of binder is the 2.5～5% of positive electrode gross weight；
The LiFePO4, median radius 1.33um, and specific surface area 20.0m2/g；The conductive agent is to lead
Electric carbon black and carbon nano-fiber are compound；The binding agent is Kynoar.
Described lithium ion battery, wherein, the negative material in the negative plate include negative active core-shell material,
Binding agent, conductive agent；The weight of negative active core-shell material is the 90～95% of negative pole material gross weight, the weight of conductive agent
Measure as the 2～5% of negative material gross weight, weight of binder is the 3～5% of negative pole material gross weight；
The conductive agent is conductive black；The binding agent is that sodium carboxymethylcellulose and butadiene-styrene rubber are compound.
Described lithium ion battery, wherein, the quality proportioning of positive electrode and negative material is 0.85～0.9:1.
Described lithium ion battery, wherein, the barrier film is that polyethylene wet method is double draws barrier film, 10～30um of thickness,
Porosity 35～50%；The electrolyte includes solvent and lithium salts, and lithium salt is 1mol/L；The solvent is
EC, EMC, DMC, EA are combined；The lithium salts is LiPF6。
Beneficial effect：The invention provides a kind of preparation method of high magnification electrode material lithium titanate, by excellent
Polarizing electrode material property come realize lithium ion battery high rate performance improve and cyclical stability improve.The method
Simple to operate, be swift in response compared with the existing method for preparing lithium titanate material, sintetics uniformity is good,
Lithium titanate particle size uniformity (primary particle size about 20nm), specific surface area height, the electric conductivity height for obtaining, energy
Increase and the contact area of electrolyte, while shortening lithium ion diffusion path, greatly improve material high rate performance.
Then, a kind of lithium ion battery is also provided in the present invention, with the metatitanic acid lithium/carbon composite material and LiFePO4
Pairing, by optimizing both positive and negative polarity proportioning, the LiFePO4-lithium titanate battery of assembling has outstanding high rate performance
Good good cyclical stability.Under 5C discharge-rates, 93% when capacity discharges for 1C；5C is circulated
2000 times, capability retention is 94%.Its high rate performance and cyclical stability and existing LiFePO4-metatitanic acid
Lithium battery is compared, and presents more excellent performance, can meet battery for electric automobile in future for quick charge
With the requirement of long life.For the development and popularization of electric automobile have good effect.
Description of the drawings
Fig. 1 is the ESEM structure chart (SEM figures) of metatitanic acid lithium/carbon composite material in the embodiment of the present invention.
Fig. 2 is the projection figure (TEM figures) of carbon point in the embodiment of the present invention.
Fig. 3 is LiFePO4-lithium titanate battery high rate performance figure in the embodiment of the present invention.
Fig. 4 is LiFePO4-lithium titanate battery cycle performance figure in the embodiment of the present invention.
Specific embodiment
The present invention provides a kind of metatitanic acid lithium/carbon composite material and preparation method thereof and lithium ion battery, to make this
Bright purpose, technical scheme and effect are clearer, clear and definite, and below the present invention is described in more detail.
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the present invention
It is bright.
A kind of preparation method of metatitanic acid lithium/carbon composite material provided by the present invention, comprises the following steps：
It is 5～10 according to mass ratio with titanium carbide powder by the hydrogen peroxide that concentration is 10%-30%:1 ratio is added
To in container, stir；
By the pale yellow solution for obtaining drying；
By the buff powder for obtaining and lithium hydroxide by 4.5～5.5:After 4 ratio mixing, in argon gas atmosphere
600～800 DEG C of calcining 2h-4h, obtain metatitanic acid lithium/carbon composite material.
The metatitanic acid lithium/carbon composite material is metatitanic acid lithium/carbon composite material, is same during lithium titanate is prepared
Step generates conductive carbon particle, while using thermal reduction reaction, to lithium titanate Lacking oxygen is manufactured, improves material certainly
The electric conductivity of body.The preparation method of metatitanic acid lithium/carbon composite material provided by the present invention prepares lithium titanate with existing
The method of material is compared, simple to operate, be swift in response, and sintetics uniformity is good, the metatitanic acid for obtaining
Lithium particle size homogeneous (primary particle size about 20nm), specific surface area are high, electric conductivity is high, can increase and electrolysis
The contact area of liquid, while shortening lithium ion diffusion path, greatly improves material high rate performance.
A kind of metatitanic acid lithium/carbon composite material is also provided in the present invention, the metatitanic acid lithium/carbon composite material is using upper
The preparation method for stating metatitanic acid lithium/carbon composite material is prepared.
A kind of lithium ion battery, including positive plate, negative plate, barrier film, electrolyte are also provided in the present invention,
Using the metatitanic acid lithium/carbon composite material as negative active core-shell material in the lithium ion battery.
Further, the lithium ion battery adopts LiFePO4 as positive electrode active materials.Because negative pole is lived
Property material using the metatitanic acid lithium/carbon composite material as negative active core-shell material, improve the conduction of composite
Property, shortening lithium ion transport distance, particle size is little, good cycling stability, high rate performance are excellent, so
It is assembled into after battery with LiFePO4, good high rate performance and cyclical stability can be kept.
Further, the LiFePO4-lithium titanate electricity of assembling is made by optimizing both positive and negative polarity proportioning in the present invention
Pond has the good cyclical stability of outstanding good rate capability.The quality proportioning of positive electrode and negative material
For 0.85～0.9:1.
Wherein, the positive electrode in the positive plate includes positive electrode active materials, conductive agent and binding agent.Just
The weight of pole active material is the 90～95% of anode material gross weight, and the weight of conductive agent is anode material gross weight
2.5～5%, weight of binder is the 2.5～5% of positive electrode gross weight.
The positive electrode active materials are commercial phosphoric acid iron lithium, median radius 1.33um, and specific surface area 20.0
m2/ g, bigger serface and little particle size are conducive to the infiltration of electrolyte and the transmission of lithium ion.It is described to lead
Electric agent is that conductive black (SP) and carbon nano-fiber (CNF) are compound.The binding agent is Kynoar
(PVDF)。
Negative material in the negative plate includes negative active core-shell material, binding agent, conductive agent, negative electrode active
The weight of material is the 90～95% of negative pole material gross weight, and the weight of conductive agent is negative material gross weight
2～5%, weight of binder is the 3～5% of negative pole material gross weight.
The negative active core-shell material be the metatitanic acid lithium/carbon composite material, primary particle size 20nm, after reunion
Form mushy bulky grain, conductive carbon point particle diameter about 5nm.The conductive agent is conductive black (SP).It is described
Binding agent is that sodium carboxymethylcellulose (CMC) and butadiene-styrene rubber (SBR) are compound.
Below by way of specific embodiment, the present invention is described further.
Embodiment
1st, metatitanic acid lithium/carbon composite material is prepared
It is 5～10 according to mass ratio with titanium carbide powder by the hydrogen peroxide that concentration is 30%:1 ratio is added to appearance
In device, stirring；
By the pale yellow solution for obtaining drying；
By the buff powder for obtaining and lithium hydroxide by 4.5～5.5:After 4 ratio mixing, in argon gas atmosphere
600～800 DEG C of calcining 2h, obtain metatitanic acid lithium/carbon composite material.
The metatitanic acid lithium/carbon composite material for preparing, particle size forms concrete dynamic modulus after 20nm or so, reunion
Bulky grain, as shown in figure 1, and carbon be below 5nm conductive carbon point composition, as shown in Figure 2.
2nd, lithium ion battery is prepared
The lithium ion battery, including positive plate, negative plate, barrier film, electrolyte.
Positive electrode in the positive plate includes positive electrode active materials, conductive agent and binding agent.Wherein, just
The weight of pole active material is the 90～95% of anode material gross weight, and the weight of conductive agent is anode material gross weight
2.5～5%, weight of binder is the 2.5～5% of positive electrode gross weight.The positive electrode active materials are commercial phosphorus
Sour iron lithium, median radius 1.33um, and specific surface area 20.0m2/ g, bigger serface and little particle size
Be conducive to the infiltration of electrolyte and the transmission of lithium ion.The conductive agent is conductive black (SP) and carbon nano-fiber
(CNF) it is combined.The binding agent is Kynoar (PVDF).
Negative material in the negative plate includes negative active core-shell material, binding agent, conductive agent, negative electrode active
The weight of material is the 90～95% of negative pole material gross weight, and the weight of conductive agent is negative material gross weight
2～5%, weight of binder is the 3～5% of negative pole material gross weight.The negative active core-shell material be the lithium titanate/
Carbon composite, primary particle size 20nm forms mushy bulky grain, conductive carbon point particle diameter after reunion
About 5nm.The conductive agent is conductive black (SP).The binding agent is sodium carboxymethylcellulose (CMC) and fourth
Benzene rubber (SBR) is combined.
The quality proportioning of positive electrode and negative material is 0.85～0.9:1.
The barrier film is that polyethylene (PE) wet method is double draws barrier film, 10～30um of thickness, porosity 35～50%.
The electrolyte includes solvent and lithium salts.Lithium salt is 1mol/L.The solvent is EC (ethylene carbonates
Ester), EMC (methyl ethyl carbonate), DMC (dimethyl carbonate), EA (ethyl acetate) be combined.EC and EMC are molten
Solution lithium salts, DMC and EA reduce electrolysis fluid viscosity, improve lithium ion diffusion coefficient.The lithium salts is LiPF6(six
Lithium fluophosphate).
The lithium ion battery for preparing is tested into its performance, as shown in figure 3, under 5C discharge-rates, holding
93% when discharging for 1C is measured, good high rate performance and good capacity restoration energy is presented；Such as Fig. 4 institutes
Show, 5C is circulated 2000 times, and capability retention is 94%, maintains good cyclical stability.
The lithium ion battery that the present invention program is prepared, its high rate performance and cyclical stability and existing phosphorus
Sour iron lithium-lithium titanate battery is compared, and presents more excellent performance, can meet battery for electric automobile pair in future
In quick charge and the requirement of long life, for the development and popularization of electric automobile have good effect.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, to those of ordinary skill in the art
For, can according to the above description be improved or be converted, all these modifications and variations should all belong to this
The protection domain of bright claims.
Claims (10)
1. a kind of preparation method of metatitanic acid lithium/carbon composite material, it is characterised in that comprise the following steps：
Hydrogen peroxide and titanium carbide powder are added in container, are stirred；
Drying；
By the powder for obtaining and lithium hydroxide by 4.5～5.5:After 4 ratio mixing, in argon gas atmosphere
600～800 DEG C of calcinings, obtain metatitanic acid lithium/carbon composite material.
2. the preparation method of metatitanic acid lithium/carbon composite material according to claim 1, it is characterised in that double
Oxygen water is 5～10 with the mass ratio of titanium carbide powder:1.
3. the preparation method of metatitanic acid lithium/carbon composite material according to claim 1, it is characterised in that double
The mass concentration of oxygen water is 10～30%.
4. a kind of metatitanic acid lithium/carbon composite material, it is characterised in that using the metatitanic acid as described in claims 1 to 3
The preparation method of lithium/carbon composite material is prepared.
5. a kind of lithium ion battery, including positive plate, negative plate, barrier film, electrolyte, it is characterised in that
Using metatitanic acid lithium/carbon composite material as claimed in claim 4 as negative electrode active material in the lithium ion battery
Material.
6. lithium ion battery according to claim 5, it is characterised in that the lithium ion battery is adopted
LiFePO4 is used as positive electrode active materials.
7. lithium ion battery according to claim 6, it is characterised in that the positive pole in the positive plate
Material includes positive electrode active materials, conductive agent and binding agent；The weight of positive electrode active materials is that positive electrode is total
The 90～95% of weight, the weight of conductive agent is the 2.5～5% of anode material gross weight, and weight of binder is positive pole material
The 2.5～5% of material gross weight；
The LiFePO4, median radius 1.33um, and specific surface area 20.0m2/g；The conductive agent is to lead
Electric carbon black and carbon nano-fiber are compound；The binding agent is Kynoar.
8. lithium ion battery according to claim 7, it is characterised in that the negative pole in the negative plate
Material includes negative active core-shell material, binding agent, conductive agent；The weight of negative active core-shell material is negative pole material gross weight
The 90～95% of amount, the weight of conductive agent is the 2～5% of negative material gross weight, and weight of binder is that negative pole material is total
The 3～5% of weight；
The conductive agent is conductive black；The binding agent is that sodium carboxymethylcellulose and butadiene-styrene rubber are compound.
9. lithium ion battery according to claim 8, it is characterised in that positive electrode and negative material
Quality proportioning be 0.85～0.9:1.
10. lithium ion battery according to claim 9, it is characterised in that the barrier film is polyethylene
Wet method is double to draw barrier film, 10～30um of thickness, porosity 35～50%；The electrolyte includes solvent and lithium salts,
Lithium salt is 1mol/L；The solvent is compound for EC, EMC, DMC, EA；The lithium salts is LiPF6。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172894A (en) * | 2017-12-30 | 2018-06-15 | 骆驼集团新能源电池有限公司 | A kind of high temperature resistant type lithium titanate battery and its chemical conversion aging method |
| CN109119592A (en) * | 2018-08-22 | 2019-01-01 | 郑州中科新兴产业技术研究院 | A kind of lithium titanate anode pole piece, preparation method and lithium titanate battery |
| CN110233246A (en) * | 2018-03-06 | 2019-09-13 | 中国科学院广州能源研究所 | Carbon coating contains composite anode active material of LiFePO4 and preparation method thereof and the application in negative electrode of lithium ion battery |
| CN111029586A (en) * | 2019-03-21 | 2020-04-17 | 东北师范大学 | High-rate lithium ion battery anode slurry |
| CN112038595A (en) * | 2020-08-12 | 2020-12-04 | 上海电气集团股份有限公司 | Preparation method and application of strontium-doped lithium titanate composite electrode material |
| CN112151740A (en) * | 2019-06-26 | 2020-12-29 | 重庆大学 | Lithium metal battery cathode, preparation method thereof and lithium metal battery |
| CN115513537A (en) * | 2022-10-08 | 2022-12-23 | 湖北钛时代新能源有限公司 | Preparation method of lithium iron phosphate battery for energy storage |
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