CN108011077A - boehmite positive plate, preparation method and lithium ion battery - Google Patents
boehmite positive plate, preparation method and lithium ion battery Download PDFInfo
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- CN108011077A CN108011077A CN201711248602.9A CN201711248602A CN108011077A CN 108011077 A CN108011077 A CN 108011077A CN 201711248602 A CN201711248602 A CN 201711248602A CN 108011077 A CN108011077 A CN 108011077A
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- boehmite
- positive plate
- coat
- battery
- lithium ion
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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 present invention relates to field of lithium ion battery, specifically, there is provided a kind of boehmite positive plate, preparation method and lithium ion battery.The boehmite positive plate includes positive plate and the boehmite coat for being arranged at positive plate surface.The boehmite positive plate includes boehmite coat, and boehmite coat has hydrophobicity and anti-flammability, can improve the security performance of battery, reduces the micro-short circuit that burr produces, and improves the cycle life of battery.
Description
Technical field
The present invention relates to field of lithium ion battery, in particular to a kind of boehmite positive plate, preparation method and lithium from
Sub- battery.
Background technology
With the continuous renewal and development of lithium battery technology, the advantages of its light, Gao Rong, long-life, gradually obtains consumer
Favor.Lithium battery market expands to the multiple fields such as camera, DVD, boat film, toy via mobile phone.In recent years, lithium-ion electric
Pond due to have the advantages that voltage is high, recycle often, storage time it is long, not only obtain on a portable electronic device wide
General application, and it is widely used in the large and medium-sized electrical equipment aspect such as electric automobile, electric bicycle and electric tool.
With the popularization of the electric vehicles such as electric bicycle, battery-operated motor cycle and electric automobile, and unmanned plane and
The development of the aeronautical and space technologies such as space probe, performance of lithium ion battery are faced with the demand for development of higher, and particularly length is followed
The demand of the lithium ion battery of ring service life and high safety performance is higher and higher.The method of existing raising battery safety is most
In terms of concentrating on selection to lithium ion battery positive and negative electrode material and diaphragm material and improvement, and above-mentioned material due to its from
The limitation of body, its research and development is more slow, can not effectively improve the security performance of battery.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of boehmite positive plate, which includes boehmite coating
Layer, boehmite coat have hydrophobicity and anti-flammability, can improve the security performance of battery, reduce the micro- short of burr generation
Road, improves the cycle life of battery.
The second object of the present invention is to provide a kind of preparation method of boehmite positive plate, and this method technique is simple, section
Learn rationally, be adapted to industrialized production, the boehmite positive plate being prepared have it is hydrophobic, fire-retardant, security performance is high and is produced into
The advantages of this is low.
The third object of the present invention is to provide a kind of lithium ion battery, which includes above-mentioned boehmite cathode
Piece, thus have the advantages that to have extended cycle life, security performance it is high low with production cost.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
In a first aspect, the present invention provides a kind of boehmite positive plate, including positive plate and it is arranged at positive plate surface
Boehmite coat.
As further preferred technical solution, the boehmite coat is mainly by boehmite, solvent and binding agent system
Into.
As further preferred technical solution, the particle diameter of the boehmite is 1-1.5 μm.
As further preferred technical solution, solvent NMP, binding agent PVDF.
As further preferred technical solution, the mass ratio of boehmite, solvent and binding agent is 4:(12-16):1.
As further preferred technical solution, the thickness of the boehmite coat is 2-4 μm.
Second aspect, the present invention provides a kind of preparation method of above-mentioned boehmite positive plate, comprises the following steps：It will contain
The slurry for having boehmite is coated on boehmite positive plate described in drying to obtain behind positive plate surface.
As further preferred technical solution, boehmite slurry is mainly uniformly mixed by boehmite, solvent and binding agent
Obtain；
Preferably, the viscosity of boehmite slurry is 100-150mPas, solid content 29%-30%.
As further preferred technical solution, drying temperature is 75-85 degree, when drying time is 12-36 small.
The third aspect, the present invention provides a kind of lithium ion battery for including above-mentioned boehmite positive plate.
Compared with prior art, beneficial effects of the present invention are：
Boehmite positive plate provided by the invention includes positive plate and the boehmite coat for being arranged at positive plate surface, suddenly
Nurse stone coat has hydrophobicity and anti-flammability, can improve the security performance of battery, reduces the micro-short circuit that burr produces, and improves
The cycle life of battery.Specifically, the positive electrode in based lithium-ion battery positive plate is made of nanometer materials more, nanometer
Material is hygroscopic, thus the security performance of battery is bad, and boehmite coat has hydrophobicity, effectively increases the peace of battery
Full performance；Also, when above-mentioned boehmite positive plate is heated after, the boehmite in boehmite coat can be decomposed into oxidation
Aluminium, aluminium oxide are a kind of fire-resistant heat insulating materials, further increase the security performance of battery；In addition, occur in inside battery short
When road, acupuncture, extruding or collision, ceramic can also occur for boehmite coat, can block positive plate short circuit heat release, keep away
Exempt from battery catches fire burning to set off an explosion, so as to prevent the generation of the security incidents such as catching fire explosion.In addition, the boehmite cathode
Piece employs boehmite coat, also has the advantages that production cost is low relative to other ceramic material coats, has good
Economic benefit.
Simple, scientific and reasonable, the suitable industrialized production of preparation method technique of boehmite positive plate provided by the invention, system
Standby obtained boehmite positive plate has the advantages that hydrophobic, fire-retardant, security performance is high low with production cost.
Lithium ion battery provided by the invention includes above-mentioned boehmite positive plate, thus the lithium ion battery has the circulation longevity
The advantages of life is long, security performance is high low with production cost.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.
In a first aspect, provide a kind of boehmite positive plate at least one embodiment, including positive plate and it is arranged at
The boehmite coat on positive plate surface.
Above-mentioned boehmite positive plate includes positive plate and the boehmite coat for being arranged at positive plate surface, boehmite coating
Layer has hydrophobicity and anti-flammability, can improve the security performance of battery, reduces the micro-short circuit that burr produces, improves following for battery
The ring service life.Specifically, the positive electrode in based lithium-ion battery positive plate is made of nanometer materials more, and nano material is easily inhaled
Water, thus the security performance of battery is bad, and boehmite coat has hydrophobicity, effectively increases the security performance of battery；
Also, when above-mentioned boehmite positive plate is heated after, the boehmite in boehmite coat can be decomposed into aluminium oxide, aluminium oxide
It is a kind of fire-resistant heat insulating material, further increases the security performance of battery；In addition, in inside battery appearance short circuit, acupuncture, squeeze
When pressure or collision, ceramic can also occur for boehmite coat, can block positive plate short circuit heat release, avoid battery catches fire
Burning sets off an explosion, so as to prevent the generation of the security incidents such as catching fire explosion.In addition, the boehmite positive plate employs suddenly
Nurse stone coat, also has the advantages that production cost is low relative to other ceramic material coats, with good economic efficiency.
It should be noted that above-mentioned boehmite coat refers to the coat being mainly prepared by boehmite.
It should be appreciated that above-mentioned positive plate is mainly prepared by plus plate current-collecting body and anode sizing agent, plus plate current-collecting body
Including but not limited to aluminium foil, anode sizing agent include positive electrode, and positive electrode includes but not limited to cobalt acid lithium, LiMn2O4, nickel
At least one of cobalt-manganese ternary battery material or LiFePO4.Above-mentioned positive plate can be selected it is of the prior art any one,
The present invention is to this and is not particularly limited.
In a preferred embodiment, the boehmite coat is mainly made of boehmite, solvent and binding agent.
Boehmite is also known as boehmite, and molecular formula is γ-AlOOH (hydrated alumina), it and main component are the water aluminium of α-AlO (OH)
Shi Jun is that bauxite is made predominantly into component.Boehmite belongs to the bipyramid point group in rhombic system, this as white crystal, due to
The impurity wherein contained so that often have yellow, green, brown or punctation, with glass or pearly luster, mohs hardness is
3 to 3.5, proportion is 3 to 3.07.Boehmite is good with organic matter compatibility, and chemistry and electrochemical stability are good.Solvent is mainly used for
Boehmite is dissolved in wherein.Binding agent, which primarily serves, to be adjusted viscosity and boehmite particles is bonded the effect of getting up, and ensures slurry
Uniformity and stability.
Above-mentioned boehmite coat has the gap, because of the insertion and abjection without influencing lithium ion.
In a preferred embodiment, the particle diameter of the boehmite is 1-1.5 μm.Above-mentioned particle diameter is typical but unrestricted
Property for 1 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm or 1.5 μm.Above-mentioned boehmite particle diameter is small, particle is uniform, it is thus possible to makes
The gap of boehmite coat is finer and closely woven, more uniformly, and then it is more equal to be distributed boehmite positive plate heat when heated
It is even, avoid hot-spot from damaging the positive plate, further increase the service life of the positive plate.
It should be noted that above-mentioned particle diameter refers to median.
In a preferred embodiment, solvent NMP, binding agent PVDF.NMP(N-Methyl
Pyrrolidone, 1-methyl-2-pyrrolidinone) be a kind of color transparent oily liquid, micro- smell for having amine, can with water, alcohol, ether, ester,
Ketone, halogenated hydrocarbons, aromatic hydrocarbons and castor oil dissolve each other, and volatility is low, and heat endurance, chemical stability are good, can volatilize, have with vapor
Hygroscopicity, it is light sensitive.PVDF (Poly (vinylidene fluoride), Kynoar) appearance is translucent or white
Powder or particle, stable and reliable for performance in the electrolytic solution, oxidative resistance and reducing resistance can be excellent.Above-mentioned solvent is molten for oil system
Agent, has hydrophobicity, avoids harmful effect of the steam to positive plate, and the peace of battery can be more improved relative to existing water solvent
Full performance.
In a preferred embodiment, the mass ratio of boehmite, solvent and binding agent is 4:(12-16):1.It is above-mentioned
Typical but non-limiting mass ratio is 4:12:1、4:13:1、4:14:1、4:15:1 or 4:16:1.Using the vigorous of said ratio
Nurse stone, solvent and made of binding agent boehmite coating layer surface it is uniform, porosity is moderate, good with the stickiness of positive plate, no
Easily cause and come off, and there is relatively low percent thermal shrinkage, surface resistance and peel strength are excellent.
In a preferred embodiment, the thickness of the boehmite coat is 2-4 μm.Above-mentioned boehmite coat
Thickness it is typical but non-limiting be 2 μm, 2.5 μm, 3 μm, 3.5 μm or 4 μm.The too conference of the thickness of boehmite coat extends
The initial time of insertion and the abjection of lithium ion, thickness is too small, can not play the role of effectively improving battery safety.
Second aspect, provides a kind of preparation method of above-mentioned boehmite positive plate at least one embodiment, including
Following steps：By the slurry containing boehmite coated on boehmite positive plate described in drying to obtain behind positive plate surface.It is above-mentioned
Preparation method technique is simple, it is scientific and reasonable, be adapted to industrialized production, the boehmite positive plate being prepared have it is hydrophobic, fire-retardant,
The advantages of security performance is high low with production cost.
In a preferred embodiment, boehmite slurry is mainly uniformly mixed by boehmite, solvent and binding agent
Arrive.
Preferably, the viscosity of boehmite slurry is 100-150mPas, solid content 29%-30%.Above-mentioned boehmite slurry
The viscosity of material it is typical but non-limiting for 100mPas, 105mPas, 110mPas, 115mPas, 120mPas,
125mPas, 130mPas, 135mPas, 140mPas, 145mPas or 150mPas；Solid content is typical but non-limit
Property processed for 29%, 29.2%, 29.4%, 29.6%, 29.8% or 30%.Solid content refers to that boehmite slurry remains after the drying
Remaining part point accounts for the mass percent of total amount.
In a preferred embodiment, drying temperature is 75-85 degree, when drying time is 12-36 small.Above-mentioned drying
Typical but non-limiting temperature is 75 degree, 76 degree, 77 degree, 78 degree, 79 degree, 80 degree, 81 degree, 82 degree, 83 degree, 84 degree or 85
Degree；When drying time is typical but non-limiting when being 12 small, 14 is small, 16 it is small when, 18 it is small when, 20 it is small when, 22 it is small when, it is 24 small
When, 26 it is small when, 28 it is small when, 30 it is small when, 32 it is small when, 34 it is small when or 36 it is small when.It is reasonable that above-mentioned drying temperature and drying time are set,
Both will not residual water vapour, will not be over-drying.
The third aspect, provides a kind of lithium-ion electric for including above-mentioned boehmite positive plate at least one embodiment
Pond.The lithium ion battery has the advantages that to have extended cycle life, security performance is high low with production cost.
It should be appreciated that the core of above-mentioned lithium ion battery is to include above-mentioned boehmite positive plate, lithium ion battery
Remaining each component and overall preparation process are using existing.
With reference to embodiment and comparative example, the present invention will be further described in detail.
Embodiment 1
A kind of boehmite positive plate, including positive plate and the boehmite coat for being arranged at positive plate surface；
The boehmite coat is mainly 4 by mass ratio:10:1 boehmite, deionized water and polyvinyl alcohol is made,
The particle diameter of boehmite is 2 μm, and the thickness of boehmite coat is 3 μm；
The positive plate is mainly prepared by aluminium foil and anode sizing agent, the positive electrode in anode sizing agent for 523 (with
Nickel, cobalt, manganese are sequence) type nickel cobalt manganese lithium ion battery ternary material.
Embodiment 2
A kind of boehmite positive plate, as different from Example 1, the particle diameter of boehmite are 1 μm, remaining each parameter with reality
It is identical to apply example 1.
Embodiment 3
A kind of boehmite positive plate, as different from Example 1, the particle diameter of boehmite are 1.2 μm, remaining each parameter with
Embodiment 1 is identical.
Embodiment 4
A kind of boehmite positive plate, as different from Example 1, the particle diameter of boehmite are 1.5 μm, remaining each parameter with
Embodiment 1 is identical.
Embodiment 5
A kind of boehmite positive plate, as different from Example 2, boehmite coat are mainly 4 by mass ratio:10:1
Boehmite, NMP and PVDF are made, remaining each parameter is same as Example 2.
Embodiment 6
A kind of boehmite positive plate, as different from Example 4, boehmite coat are mainly 4 by mass ratio:12:1
Boehmite, NMP and PVDF are made, remaining each parameter is same as Example 4.
Embodiment 7
A kind of boehmite positive plate, as different from Example 4, boehmite coat are mainly 4 by mass ratio:14:1
Boehmite, NMP and PVDF are made, remaining each parameter is same as Example 4.
Embodiment 8
A kind of boehmite positive plate, as different from Example 4, boehmite coat are mainly 4 by mass ratio:16:1
Boehmite, NMP and PVDF are made, remaining each parameter is same as Example 4.
Embodiment 9
A kind of boehmite positive plate, as different from Example 5, the thickness of boehmite coat is 2 μm, remaining each parameter
It is same as Example 5.
Embodiment 10
A kind of boehmite positive plate, as different from Example 5, the thickness of boehmite coat is 3 μm, remaining each parameter
It is same as Example 5.
Embodiment 11
A kind of boehmite positive plate, as different from Example 5, the thickness of boehmite coat is 4 μm, remaining each parameter
It is same as Example 5.
Embodiment 12
A kind of preparation method of boehmite positive plate, comprises the following steps：The raw material of formula ratio is weighed according to embodiment 11,
Boehmite, NMP and PVDF are uniformly mixed to obtain boehmite slurry, the viscosity of slurry is 120mPas, solid content 30%；
Then dry (drying temperature is 80 degree, when drying time is 24 small) obtains after boehmite slurry being coated on positive plate surface
The boehmite positive plate.
Comparative example 1
A kind of based lithium-ion battery positive plate, the positive plate are mainly prepared by aluminium foil and anode sizing agent, anode sizing agent
In positive electrode be 523 (using nickel, cobalt, manganese as sequence) type nickel cobalt manganese lithium ion battery ternary materials.
Comparative example 2
A kind of based lithium-ion battery positive plate, including positive plate and the α-Al for being arranged at positive plate surface2O3Coat；
The positive plate is mainly prepared by aluminium foil and anode sizing agent, the positive electrode in anode sizing agent for 523 (with
Nickel, cobalt, manganese are sequence) type nickel cobalt manganese lithium ion battery ternary material.
Effect test
Be respectively adopted positive plate of the positive plate in embodiment 1-12 and comparative example 1-2 as lithium ion battery, and by its
The Soft Roll laminated lithium ion battery of same size is assembled into, every kind of positive plate respectively assembles 100 batteries, and wherein negative material is stone
Ink, membrane are MIcroporous polyolefin film, the quantity of the short circuit battery in then counting respectively per Battery pack, and are detected in every Battery pack
Average size, averaging loop service life and the safety in utilization of remaining spec battery, safety in utilization examination criteria are lithium-ion electric
Pond security enforcement standard GB 31241, the results are shown in Table 1.
1 effect test result of table
Safety of acupuncture experiment is that (conicity of needle point is 45-60 degree, the table of pin with the high temperature resistant draw point of a diameter of 5-8mm
The bright and clean non-corroding in face, non-oxidation) run through from the direction that face is indulged perpendicular to battery, draw point stops 1 minute in the battery, and battery does not rise
Fire, do not explode, then is denoted as qualification, is otherwise denoted as unqualified.
Although being illustrated and the invention has been described with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of boehmite positive plate, it is characterised in that including positive plate and the boehmite coat for being arranged at positive plate surface.
2. boehmite positive plate according to claim 1, it is characterised in that the boehmite coat is mainly by vigorous nurse
Stone, solvent and binding agent are made.
3. boehmite positive plate according to claim 2, it is characterised in that the particle diameter of the boehmite is 1-1.5 μm.
4. boehmite positive plate according to claim 2, it is characterised in that solvent NMP, binding agent PVDF.
5. boehmite positive plate according to claim 2, it is characterised in that the mass ratio of boehmite, solvent and binding agent
For 4:(12-16):1.
6. according to claim 1-5 any one of them boehmite positive plates, it is characterised in that the thickness of the boehmite coat
Spend for 2-4 μm.
7. the preparation method of claim 1-6 any one of them boehmite positive plates, it is characterised in that comprise the following steps：
By the slurry containing boehmite coated on boehmite positive plate described in drying to obtain behind positive plate surface.
8. the preparation method of boehmite positive plate according to claim 7, it is characterised in that boehmite slurry is mainly by vigorous
Nurse stone, solvent and binding agent are uniformly mixed to obtain；
Preferably, the viscosity of boehmite slurry is 100-150mPas, solid content 29%-30%.
9. the preparation method of the boehmite positive plate according to claim 7 or 8, it is characterised in that drying temperature 75-85
Degree, when drying time is 12-36 small.
10. include the lithium ion battery of claim 1-6 any one of them boehmite positive plates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711248602.9A CN108011077A (en) | 2017-11-30 | 2017-11-30 | boehmite positive plate, preparation method and lithium ion battery |
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| CN201711248602.9A CN108011077A (en) | 2017-11-30 | 2017-11-30 | boehmite positive plate, preparation method and lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190327A (en) * | 2019-05-30 | 2019-08-30 | 湖南电将军新能源有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN110364663A (en) * | 2019-06-03 | 2019-10-22 | 江西力能新能源科技有限公司 | A kind of lithium battery structure of the ceramic coating containing boehmite |
| CN110498671A (en) * | 2019-06-03 | 2019-11-26 | 江西力能新能源科技有限公司 | A kind of ceramic coating and preparation method for lithium battery pole slice containing boehmite |
| CN111276696A (en) * | 2020-01-08 | 2020-06-12 | 天津市捷威动力工业有限公司 | Internal short circuit safety lithium battery positive electrode slurry, preparation method, positive electrode piece and lithium ion battery |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
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| CN106654277A (en) * | 2016-11-29 | 2017-05-10 | 先雪峰 | Application of additive, electrode slurry, additive slurry, cathode or anode of lithium ion battery, preparation method of cathode or anode of lithium ion battery and lithium ion battery |
| CN107394113A (en) * | 2017-06-07 | 2017-11-24 | 天津中科先进技术研究院有限公司 | Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery |
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| CN106654277A (en) * | 2016-11-29 | 2017-05-10 | 先雪峰 | Application of additive, electrode slurry, additive slurry, cathode or anode of lithium ion battery, preparation method of cathode or anode of lithium ion battery and lithium ion battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190327A (en) * | 2019-05-30 | 2019-08-30 | 湖南电将军新能源有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN110364663A (en) * | 2019-06-03 | 2019-10-22 | 江西力能新能源科技有限公司 | A kind of lithium battery structure of the ceramic coating containing boehmite |
| CN110498671A (en) * | 2019-06-03 | 2019-11-26 | 江西力能新能源科技有限公司 | A kind of ceramic coating and preparation method for lithium battery pole slice containing boehmite |
| CN111276696A (en) * | 2020-01-08 | 2020-06-12 | 天津市捷威动力工业有限公司 | Internal short circuit safety lithium battery positive electrode slurry, preparation method, positive electrode piece and lithium ion battery |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
| CN113471578B (en) * | 2021-06-04 | 2023-03-14 | 湖南领湃达志科技股份有限公司 | Power energy storage battery shell, preparation method and battery |
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Application publication date: 20180508 |