CN108305989A - A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell - Google Patents
A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell Download PDFInfo
- Publication number
- CN108305989A CN108305989A CN201711425711.3A CN201711425711A CN108305989A CN 108305989 A CN108305989 A CN 108305989A CN 201711425711 A CN201711425711 A CN 201711425711A CN 108305989 A CN108305989 A CN 108305989A
- Authority
- CN
- China
- Prior art keywords
- cathode
- turns
- active material
- lithium ion
- high power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- 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
-
- 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
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- 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
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of cathode of fast charging and discharging type high power lithium ion cell apply cream, by weight calculate, including 55 75 active material C, 20.5 36 active material D, 12 thickener, 24 conductive agent C and 1.5 3 binder B；Wherein active material C is artificial graphite or carbonaceous mesophase spherules；Active material D is soft carbon or hard carbon；Conductive agent C is Super P；Thickener is sodium carboxymethylcellulose CMC；Binder B is styrene butadiene rubber sbr or polystyrene acrylate.Lithium ion battery using the present invention can meet high power fast charging and discharging, and service life is long；The lasting charge and discharge of 30C can be met, 30C constant-current charges capacity ratio can reach 70% or more of 1C capacity, 30C electric discharges ratio can reach 90% or more of 1C capacity, promote 20% or more than conventional power type lithium ion battery charging aspect, 10% or more is promoted in terms of electric discharge.
Description
Technical field
The invention belongs to lithium ion battery preparing technical field, it is related to a kind of fast charging and discharging type high power lithium ion cell
Cathode applies cream and production method.
Background technology
Nowadays lithium rechargeable battery has become the electrochmical power source of mainstream, be widely used in most mobile terminal devices
And the fields such as new-energy automobile, compared to its and cycle longevity high, higher than energy with operating voltage of ni-mh ni-Cd lead-acid battery
Order the advantages that long.In recent years, with electric tool, the fast development of unmanned plane, model plane, new-energy automobile, especially as lithium from
Sub- battery HEV hybrid electric vehicles, the vehicle-mounted start stop systems of 12V/48V batch application, to the charging of lithium rechargeable battery and
Discharge power requirement is higher and higher, is typically necessary and meets 30-40C rate charge-discharge requirements, but commercialization at present
Lithium ion battery is difficult to meet this high-power charge-discharge power demand.
Onboard power type lithium ion battery is even more the primary demand for needing to face three aspects：First, long-life, quality guarantee period
It is general to require to be 5-8 or ten thousand kilometers of 8-10, but lithium ion battery, in the charge and discharge process of cycle, battery polarization can not
It is disconnected to increase, cause battery life that requirement is not achieved.Second is high power, but lithium ion battery is in high current charge-discharge
In the case of battery polarization can be caused to increase, battery heat production is serious, to cause side reaction to increase, then battery capacity is caused to decline
Subtract, causes the power of battery that cannot reach requirement.Third is wide Wen Cheng, needs -20 DEG C of -60 DEG C of working ranges of satisfaction
It is required that but lithium ion battery polarize can dramatically increase under cryogenic, cause analyse lithium and capacity decaying, make it in low temperature
Under the conditions of cannot use.So onboard power lithium battery primarily solve the problems, such as be how under the conditions ofs high magnification and low temperature etc.,
The polarization of battery is reduced to greatest extent.
Battery polarization includes three classes for classification, and the first kind is ohmic polarization, and the second class is electrochemical reaction polarization, the
Three classes are concentration polarizations.Balance solution is most difficult in the polarization of this three classes is rear the two, and electrochemical reaction polarization is mainly concerned with material
Exchange current density, Charge-transfer resistance, electrochemical reaction area and the electrochemical reaction activation energy of material system.Concentration polarization
Include mainly solid phase concentration polarization and liquid phase concentration polarization.Solid phase concentration polarization relate generally to material diffusion mobility coefficient and lithium from
Sub- diffusion mobility path.Liquid phase concentration polarization relate generally to material specific surface area, pole piece of material porosity, diaphragm pore size
With distribution of pores, porosity and air permeability, the conductivity of electrolyte, viscosity etc..Design the fast charging and discharging of a function admirable
High power lithium ion cell needs the speed and the two that ensure the diffusion mobility in entire electrochemical system of lithium ion and electronics
Between charge balance.Conventional power type lithium ion battery, which is easier to meet big multiplying power, to be continued or pulsed discharge, but big
Multiplying power persistently charges or pulse charge, and lithium ion battery is easy to analysis lithium, leads to battery irreversible capacity loss, or even part
Li dendrite leads to the problem of internal short-circuit and thus causes battery that thermal runaway occurs, and this problem shows particularly aobvious under cryogenic
It writes.Therefore, researching and developing a can meet big multiplying power and continue or pulsed discharge and complete persistently to fill in big multiplying power
The power lithium-ion battery for having high power fast charging and discharging of electricity or pulse charge has great importance.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems in the prior art, provides a kind of fast charging and discharging type high power
The cathode of lithium ion battery applies cream, and the lithium ion battery of cream is applied using the cathode and can meet high power fast charging and discharging, and is used
Long lifespan.
To achieve the purpose of the present invention, technical solution of the invention is：A kind of fast charging and discharging type high-power lithium ion
The cathode of battery applies cream, by weight calculating, includes the thickening of active material D, 1-2 of active material C, 20.5-36 of 55-75
Agent, 2-4 conductive agent C and 1.5-3 binder B；Wherein active material C is artificial graphite or carbonaceous mesophase spherules；Active matter
Matter D is soft carbon or hard carbon；Conductive agent C is Super-P；Thickener is sodium carboxymethylcellulose CMC；Binder B is butadiene-styrene rubber
SBR or Polystyrene-acrylate.
Preferably, the active material C size distributions D50 is 4-11 μm, and specific surface area BET is 1.1-5m2/g；Activity
The size distribution D50 of substance D is 4-15 μm, and specific surface area BET is 1.5-8m2/g。
Preferably, when the active material C is artificial graphite, it is coal measures metallurgical coke or coal measures that artificial graphite, which makes raw material,
Pitch coke；The artificial graphite microstructural surfaces are coated with hard carbon material.
The production method that a kind of cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use
Solvent be deionized water comprising following steps：
A, the active material C of the amount, active material D, thickener and conductive agent C are premixed into 5- in dry powder intensive mixer
15min obtains cathode powder mixture；
B, cathode powder is transferred in double planetary mixer, control double planetary mixer revolution speed 10-15 turns/min, dispersion
Speed 150-400 turns/min, feed time 5-10min；
C, the deionized water for the 22-27% that weight is cathode powder total weight of the mixture is added to the cathode powder first
In mixture, control double planetary mixer revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, stirs wetting time
For 35-45min；
D, the deionized water for the 15-20% that weight is cathode powder total weight of the mixture, control double planetary mixer revolution are added
Speed 40-50 turns/min, and rate of dispersion 800-1200 turns/min, and the high-viscosity stirring time is 55-65min；
E, it is eventually adding the deionized water for the 10-15% that weight is cathode powder total weight of the mixture, control double planetary mixer is public
Rotary speed 50-60 turns/min, and rate of dispersion 1500-2000 turns/min, and after diluting homogeneous 60-70min, the bonding of the amount is added
Agent continuation vacuumizes de-bubbled under this speed and obtains cathode painting cream again after stirring 35-45min.
The present invention has the positive effect that compared with the prior art：
1, cathode applies in cream through two kinds of different types of arranging in pairs or groups, the active material of different grain size distribution, and material not only may be implemented
Inter-granular porosity makes full use of, and to improve the tap density and compacted density of electrode, further improves the processing of slurry
The energy density of ability and battery.
2, cathode apply cream using non-graphite system doping, on the one hand due to its structural rigidity, after roll process, pole piece by
To outer force compresses, non-graphite system is capable of providing rigid space support not only in negative terminal surface inside cathode, in this way
It not only contributes to reduce electrolyte and cathode pole piece surface contact angle to improve rate of liquid aspiration, and improves inside cell piece
Guarantor's liquid measure, further increase lithium ion diffusion channel, improve lithium ion diffusion rate.On the other hand, due to non-stone
The interlamellar spacing of black system is greater than lithium ion radius, this so that lithium ion is easier embedded negative electrode active in multiplying power charging process
In substance, the diffusion polarization in lithium ion liquid phase and solid phase is reduced, to avoid cathode charging analysis lithium in pure graphite system
Risk.
3, cathode applies cream active material C and selects cladded type coal measures artificial graphite, not only can effectively reduce electrochemical reaction
Polarization and diffusion polarization, and due to the stability of internal structure, the reliable long-term working of battery can be improved.
In short, high power fast charging and discharging, and service life can be met by applying the lithium ion battery of cream using cathode of the present invention
It is long；The lasting charge and discharge of 30C can be met, 30C constant-current charges capacity ratio can reach 70% or more, the 30C electric discharges of 1C capacity
Ratio can reach 90% or more of 1C capacity, promote 20% or more than conventional power type lithium ion battery charging aspect, electric discharge side
Face promotes 10% or more.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.
Embodiment 1：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 60
Artificial graphite, 34 soft carbon, 1 sodium carboxymethylcellulose CMC, 3 Super-P and 2 styrene butadiene rubber sbr.The people
It is coal measures metallurgical coke to make graphite and make raw material, and microstructural surfaces are coated with hard carbon material.Preferably, the granularity of artificial graphite point
Cloth D50 is 5.5 μm, and specific surface area BET is 2.1m2/g.Preferably, the size distribution D50 of soft carbon is 13 μm, specific surface area BET
For 2.9m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, by the artificial graphite of the amount, soft carbon, sodium carboxymethylcellulose CMC and Super-P in dry powder intensive mixer
5-15min is premixed, cathode powder mixture is obtained.B, cathode powder is transferred in double planetary mixer, control double-planet stirs
It mixes machine revolution speed 10-15 and turns/min, rate of dispersion 150-400 turns/min, feed time 5-10min.C, it is by weight first
The deionized water of the 22-27% of cathode powder total weight of the mixture is added in the cathode powder mixture, controls double-planet
Blender revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, it adds
Weight is the deionized water of the 15-20% of cathode powder total weight of the mixture, control double planetary mixer revolution speed 40-50 turns/
Min, rate of dispersion 800-1200 turn/min, and the high-viscosity stirring time is 55-65min.E, it is cathode powder to be eventually adding weight
The deionized water of the 10-15% of total weight of the mixture, control double planetary mixer revolution speed 50-60 turn/min, rate of dispersion
1500-2000 turns/min, and after diluting homogeneous 60-70min, the styrene butadiene rubber sbr that the amount is added continues again under this speed
De-bubbled is vacuumized after stirring 35-45min obtains cathode painting cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 3080110-1200, wherein cell thickness 3mm, width 80mm, height
110mm, battery nominal capacity 1200mAh, battery 1C discharge capacities are 1258mAh, preparation-obtained battery 30C constant-current phases
Charging capacity 907mAh, charging capacity ratio are that 72.1%, 30C constant-current discharges capacity is 1151mAh, and discharge capacity ratio is
91.5%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 2：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 65
Carbonaceous mesophase spherules, 28 soft carbon, 1.5 sodium carboxymethylcellulose CMC, 3.5 Super-P and 2 polystyrene-propylene
Acid esters.Preferably, the size distribution D50 of the carbonaceous mesophase spherules is 6.5 μm, and specific surface area BET is 3.8m2/g.It is preferred that
The size distribution D50 on ground, soft carbon is 10 μm, and specific surface area BET is 3.3m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the carbonaceous mesophase spherules of the amount, soft carbon, sodium carboxymethylcellulose CMC and Super-P is mixed in dry powder strength
Conjunction machine premixes 5-15min, obtains cathode powder mixture.B, cathode powder is transferred in double planetary mixer, controls duplicate rows
Star blender revolution speed 10-15 turns/min, and rate of dispersion 150-400 turns/min, feed time 5-10min.C, it is by weight
The deionized water of the 22-27% of cathode powder total weight of the mixture is added in the cathode powder mixture, controls double-planet
Blender revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, it adds
Weight is the deionized water of the 15-20% of cathode powder total weight of the mixture, control double planetary mixer revolution speed 40-50 turns/
Min, rate of dispersion 800-1200 turn/min, and the high-viscosity stirring time is 55-65min.E, it is cathode powder to be eventually adding weight
The deionized water of the 10-15% of total weight of the mixture, control double planetary mixer revolution speed 50-60 turn/min, rate of dispersion
1500-2000 turns/min, and after diluting homogeneous 60-70min, the Polystyrene-acrylate that the amount is added continues again herein
De-bubbled is vacuumized under speed after stirring 35-45min and obtains cathode painting cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 40150211-4500, wherein cell thickness 4mm, width 150mm, it is high
211mm, battery nominal capacity 4500mAh are spent, battery 1C discharge capacities are 4613mAh, preparation-obtained battery 30C constant current ranks
Section charging capacity 3490mAh, charging capacity ratio is that 75.65%, 30C constant-current discharges capacity is 4295mAh, discharge capacity ratio
It is 93.1%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 3：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 55
Carbonaceous mesophase spherules, 36 hard carbon, 2 sodium carboxymethylcellulose CMC, 4 Super-P and 3 polystyrene-acrylic acid
Ester.Preferably, the size distribution D50 of the carbonaceous mesophase spherules is 4.5 μm, and specific surface area BET is 4m2/g.Preferably, firmly
The size distribution D50 of carbon is 5 μm, and specific surface area BET is 8m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the carbonaceous mesophase spherules of the amount, hard carbon, CMC and Super-P are premixed into 5- in dry powder intensive mixer
15min obtains cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer is public
Rotary speed 10-15 turns/min, and rate of dispersion 150-400 turns/min, feed time 5-10min.C, it is that cathode powder mixes by weight
The deionized water for closing the 22-27% of object total weight is added in the cathode powder mixture, control double planetary mixer revolution
Speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, it is cathode to add weight
The deionized water of the 15-20% of powder mixture total weight, control double planetary mixer revolution speed 40-50 turn/min, dispersion speed
It spends 800-1200 and turns/min, the high-viscosity stirring time is 55-65min.E, it is cathode powder mixture total weight to be eventually adding weight
The deionized water of the 10-15% of amount, 50-60 turns/min of control double planetary mixer revolution speed, 1500-2000 turns of rate of dispersion/
After min, dilution homogeneous 60-70min, the Polystyrene-acrylate continuation that the amount is added stirs 35- under this speed again
De-bubbled is vacuumized after 45min obtains cathode painting cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 45150211-5000, wherein cell thickness 4.5mm, width 150mm,
Height 211mm, battery nominal capacity 5000mAh, battery 1C discharge capacities are 5083mAh, preparation-obtained battery 30C constant currents
Stage charging capacity 3914mAh, charging capacity ratio are that 77%, 30C constant-current discharges capacity is 4681.44mAh, discharge capacity ratio
Example is 92.1%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 4：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 75
Artificial graphite, 20.5 hard carbon, 1.2 sodium carboxymethylcellulose CMC, 2 Super-P and 1.2 styrene butadiene rubber sbr.Institute
It is that carbobitumen is burnt that the artificial graphite stated, which makes raw material, and microstructural surfaces are coated with hard carbon material.Preferably, artificial graphite
Size distribution D50 is 10 μm, and specific surface area BET is 1.1m2/g.Preferably, the size distribution D50 of hard carbon is 9 μm, specific surface area
BET is 4.2m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the artificial graphite of the amount, hard carbon, CMC and Super-P are premixed into 5-15min in dry powder intensive mixer, obtained
To cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer revolution speed 10-
15 turns/min, rate of dispersion 150-400 turns/min, feed time 5-10min.C, first that weight is total for cathode powder mixture
The deionized water of the 22-27% of weight is added in the cathode powder mixture, controls double planetary mixer revolution speed
25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, it is cathode powder to add weight
The deionized water of the 15-20% of total weight of the mixture, control double planetary mixer revolution speed 40-50 turn/min, rate of dispersion
800-1200 turns/min, and the high-viscosity stirring time is 55-65min.E, it is cathode powder total weight of the mixture to be eventually adding weight
10-15% deionized water, control double planetary mixer revolution speed 50-60 turns/min, rate of dispersion 1500-2000 turns/
After min, dilution homogeneous 60-70min, the styrene butadiene rubber sbr continuation that the amount is added stirs 35-45min under this speed again
After vacuumize de-bubbled obtain cathode apply cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 3580110-1200, wherein cell thickness 3.5mm, width 80mm, it is high
110mm, battery nominal capacity 1300mAh are spent, battery 1C discharge capacities are 1388mAh, preparation-obtained battery 30C constant current ranks
Section charging capacity 973mAh, charging capacity ratio is that 70.1%, 30C constant-current discharges capacity is 1251mAh, and discharge capacity ratio is
90.13%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 5：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 73
Carbonaceous mesophase spherules, 21 hard carbon, 1.2 sodium carboxymethylcellulose CMC, 3 Super-P and 1.8 styrene butadiene rubber sbr.
Preferably, the size distribution D50 of the carbonaceous mesophase spherules is 8 μm, and specific surface area BET is 2.9m2/g；The hard carbon
Size distribution D50 is 8.5 μm, and specific surface area BET is 3.8m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the carbonaceous mesophase spherules of the amount, hard carbon, CMC and Super-P are premixed into 5- in dry powder intensive mixer
15min obtains cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer is public
Rotary speed 10-15 turns/min, and rate of dispersion 150-400 turns/min, feed time 5-10min.C, first by weight be negative electrode powder
The deionized water of the 22-27% of body total weight of the mixture is added in the cathode powder mixture, controls double planetary mixer
Revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, adding weight is
The deionized water of the 15-20% of cathode powder total weight of the mixture, control double planetary mixer revolution speed 40-50 turn/min, point
It dissipates speed 800-1200 and turns/min, the high-viscosity stirring time is 55-65min.E, it is cathode powder mixture to be eventually adding weight
The deionized water of the 10-15% of total weight, control double planetary mixer revolution speed 50-60 turn/min, rate of dispersion 1500-
2000 turns/min, after diluting homogeneous 60-70min, the styrene butadiene rubber sbr continuation that the amount is added is stirred under this speed again
De-bubbled is vacuumized after 35-45min obtains cathode painting cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 60150211-7000, wherein cell thickness 6mm, width 150mm, it is high
211mm, battery nominal capacity 7000mAh are spent, battery 1C discharge capacities are 7269mAh, preparation-obtained battery 30C constant current ranks
Section charging capacity 5305mAh, charging capacity ratio is that 73.02%, 30C constant-current discharges capacity is 6629mAh, discharge capacity ratio
It is 91.2%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 6：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 57
Artificial graphite, 36 hard carbon, 1.2 sodium carboxymethylcellulose CMC, 3.5 Super-P and 2.3 polystyrene-acrylic acid
Ester.It is that carbobitumen is burnt that the artificial graphite, which makes raw material, and microstructural surfaces are coated with hard carbon material.Preferably, artificial
The size distribution D50 of graphite is 5 μm, and specific surface area BET is 2.4m2/g.Preferably, the size distribution D50 of hard carbon is 14 μm, than
Surface area BET is 3.2m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the artificial graphite of the amount, hard carbon, CMC and Super-P are premixed into 5-15min in dry powder intensive mixer, obtained
To cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer revolution speed 10-
15 turns/min, rate of dispersion 150-400 turns/min, feed time 5-10min.C, it is cathode powder total weight of the mixture by weight
The deionized water of 22-27% be added in the cathode powder mixture, control double planetary mixer revolution speed 25-35
Turn/min, rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, weight is added to mix for cathode powder
The deionized water of the 15-20% of object total weight, control double planetary mixer revolution speed 40-50 turn/min, rate of dispersion 800-
1200 turns/min, the high-viscosity stirring time is 55-65min.E, it is eventually adding the 10- that weight is cathode powder total weight of the mixture
15% deionized water, control double planetary mixer revolution speed 50-60 turn/min, and rate of dispersion 1500-2000 turns/min, dilute
After releasing homogeneous 60-70min, the Polystyrene-acrylate continuation that the amount is added stirs 35-45min under this speed again
After vacuumize de-bubbled obtain cathode apply cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 6080110-2500, wherein cell thickness 6mm, width 80mm, height
110mm, battery nominal capacity 2500mAh, battery 1C discharge capacities are 2713mAh, preparation-obtained battery 30C constant-current phases
Charging capacity 2070mAh, charging capacity ratio are that 76.23%, 30C constant-current discharges capacity is 2579mAh, and discharge capacity ratio is
95.06%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 7：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 64
Artificial graphite, 30 soft carbon, 1.4 sodium carboxymethylcellulose CMC, 3 Super-P and 1.6 styrene butadiene rubber sbr.It is described
Artificial graphite to make raw material be coal measures metallurgical coke, microstructural surfaces are coated with hard carbon material.Preferably, the grain of artificial graphite
Degree distribution D50 is 11 μm, and specific surface area BET is 1.2m2/g.Preferably, the size distribution D50 of soft carbon is 4 μm, specific surface area
BET is 5.8m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the artificial graphite of the amount, soft carbon, CMC and Super-P are premixed into 5-15min in dry powder intensive mixer, obtained
To cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer revolution speed 10-
15 turns/min, rate of dispersion 150-400 turns/min, feed time 5-10min.C, first that weight is total for cathode powder mixture
The deionized water of the 22-27% of weight is added in the cathode powder mixture, controls double planetary mixer revolution speed
25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, it is cathode powder to add weight
The deionized water of the 15-20% of total weight of the mixture, control double planetary mixer revolution speed 40-50 turn/min, rate of dispersion
800-1200 turns/min, and the high-viscosity stirring time is 55-65min.E, it is cathode powder total weight of the mixture to be eventually adding weight
10-15% deionized water, control double planetary mixer revolution speed 50-60 turns/min, rate of dispersion 1500-2000 turns/
After min, dilution homogeneous 60-70min, the styrene butadiene rubber sbr continuation that the amount is added stirs 35-45min under this speed again
After vacuumize de-bubbled obtain cathode apply cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 65150211-7500, wherein cell thickness 6.5mm, width 150mm,
Height 211mm, battery nominal capacity 7500mAh, battery 1C discharge capacities are 7579mAh, preparation-obtained battery 30C constant currents
Stage charging capacity 5745mAh, charging capacity ratio are that 75.8%, 30C constant-current discharges capacity is 7086mAh, discharge capacity ratio
It is 93.5%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Embodiment 8：A kind of cathode painting cream of fast charging and discharging type high power lithium ion cell, by weight calculating, including 60
Carbonaceous mesophase spherules, 35 soft carbon, 1 sodium carboxymethylcellulose CMC, 3.5 Super-P and 1.5 polystyrene-propylene
Acid esters.Preferably, the size distribution D50 of the carbonaceous mesophase spherules is 4 μm, and specific surface area BET is 5m2/g.Preferably, soft
The size distribution D50 of carbon is 15 μm, and specific surface area BET is 1.5m2/g。
The production method that the cathode of fast charging and discharging type high power lithium ion cell described above applies cream, when making, use molten
Agent is deionized water comprising following steps：
A, the carbonaceous mesophase spherules of the amount, soft carbon, CMC and Super-P are premixed into 5- in dry powder intensive mixer
15min obtains cathode powder mixture.B, cathode powder is transferred in double planetary mixer, control double planetary mixer is public
Rotary speed 10-15 turns/min, and rate of dispersion 150-400 turns/min, feed time 5-10min.C, first by weight be negative electrode powder
The deionized water of the 22-27% of body total weight of the mixture is added in the cathode powder mixture, controls double planetary mixer
Revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, and stirring wetting time is 35-45min.D, adding weight is
The deionized water of the 15-20% of cathode powder total weight of the mixture, control double planetary mixer revolution speed 40-50 turn/min, point
It dissipates speed 800-1200 and turns/min, the high-viscosity stirring time is 55-65min.E, it is cathode powder mixture to be eventually adding weight
The deionized water of the 10-15% of total weight, control double planetary mixer revolution speed 50-60 turn/min, rate of dispersion 1500-
2000 turns/min, after diluting homogeneous 60-70min, the Polystyrene-acrylate that the amount is added continues again under this speed
De-bubbled is vacuumized after stirring 35-45min obtains cathode painting cream.
Cream, which is applied, with above-mentioned cathode manufactures experimently battery size 50140210-5600, wherein cell thickness 5mm, width 140mm, it is high
210mm, battery nominal capacity 5600mAh are spent, battery 1C discharge capacities are 5720mAh, preparation-obtained battery 30C constant current ranks
Section charging capacity 4480mAh, charging capacity ratio is that 78.3%, 30C constant-current discharges capacity is 5487mAh, and discharge capacity ratio is
95.9%.The requirement of GB/T31485-2015 can be met in terms of security performance.
Comparative example 1（Compare the advantage that positive and negative anodes apply the active material blending of cream）
Cathode apply each component of cream weight ratio be：Active material B：Thickener：Conductive agent C：Binder B=93：1.4：3：
2.6, wherein active material B are carbonaceous mesophase spherules, and conductive agent C is Super-P；Thickener is sodium carboxymethylcellulose CMC；It is viscous
It is styrene butadiene rubber sbr to tie agent B.The size distribution D50 of carbonaceous mesophase spherules is 6 μm, and specific surface area BET is 4.1m2/g。
Cream is applied using above-mentioned cathode and is fabricated to lithium ion battery.
Manufacture experimently into battery size 6080110-2500, wherein cell thickness 6mm, width 80mm, height 110mm, battery mark
It is 2667mAh, preparation-obtained battery 30C constant-current phase charging capacitys to claim capacity 2500mAh, battery 1C discharge capacities
1411mAh, charging capacity ratio are that 52.9%, 30C constant-current discharges capacity is 2256mAh, and discharge capacity ratio is 84.58%.Peace
Full aspect of performance cannot meet the requirement of GB/T31485-2015, especially pierce in needle, overcharge, there are thermal runaways in terms of extruding
Problem.
Comparative example 2（Comparative particle's degree）
Cathode apply each component of cream weight ratio be：Active material C：Active material D：Thickener：Conductive agent C：Binder B=
58：36：1.2：3：1.8, wherein active material C are the carbobitumen coke artificial graphite for coating hard carbon, and active material D is hard carbon；
Thickener is sodium carboxymethylcellulose CMC, and conductive agent C is Super-P, and binder B is Polystyrene-acrylate.Artificial stone
The size distribution D50 of ink is 12 μm, and specific surface area BET is 1.1m2/g.The size distribution D50 of hard carbon is 18 μm, specific surface area
BET is 2.2m2/g。
Cream is applied using above-mentioned cathode and is fabricated to lithium ion battery.
Manufacture experimently into battery size 60150211-7000, wherein cell thickness 6mm, width 150mm, height 211mm, battery
Nominal capacity 7000mAh, battery 1C discharge capacities are 7178mAh, preparation-obtained battery 30C constant-current phase charging capacitys
3379mAh, charging capacity ratio are that 47%, 30C constant-current discharges capacity is 5190mAh, and discharge capacity ratio is 72.3%.Safety
Energy aspect can meet the requirement of GB/T31485-2015.
According to the data of above example and comparative example can be seen that the lithium of high magnification fast charging and discharging that the present invention obtains from
Sub- battery, 30C multiplying powers charging capacity can be higher by 12% or more prior art products, and 30C multiplying power discharging capacity is higher by the prior art
5% or more product.
Above-described specific embodiment has carried out into one the purpose of the present invention, technical solution and advantageous effect
The detailed description of step, the foregoing is merely specific implementations of the invention, are not intended to limit the scope of protection of the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of cathode of fast charging and discharging type high power lithium ion cell applies cream, it is characterised in that：By weight calculating, including
The binder B of the thickener of active material D, 1-2 of active material C, 20.5-36 of 55-75, the conductive agent C and 1.5-3 of 2-4；
Wherein active material C is artificial graphite or carbonaceous mesophase spherules；Active material D is soft carbon or hard carbon；Conductive agent C is Super-P；
Thickener is sodium carboxymethylcellulose CMC；Binder B is styrene butadiene rubber sbr or Polystyrene-acrylate.
2. the cathode of fast charging and discharging type high power lithium ion cell according to claim 1 applies cream, it is characterised in that：It is described
Active material C size distributions D50 be 4-11 μm, specific surface area BET be 1.1-5m2/g；The size distribution D50 of active material D
It it is 4-15 μm, specific surface area BET is 1.5-8m2/g。
3. the cathode of fast charging and discharging type high power lithium ion cell according to claim 1 or 2 applies cream, it is characterised in that：
When the active material C is artificial graphite, it is that coal measures metallurgical coke or carbobitumen are burnt that artificial graphite, which makes raw material,；It is described artificial
Graphite microstructural surfaces are coated with hard carbon material.
4. a kind of cathode of the fast charging and discharging type high power lithium ion cell in claim 1-3 described in one of which applies the system of cream
Make method comprising following steps：
A, the active material C of the amount, active material D, thickener and conductive agent C are premixed into 5- in dry powder intensive mixer
15min obtains cathode powder mixture；
B, cathode powder is transferred in double planetary mixer, control double planetary mixer revolution speed 10-15 turns/min, dispersion
Speed 150-400 turns/min, feed time 5-10min；
C, the deionized water for the 22-27% that weight is cathode powder total weight of the mixture is added to the cathode powder first
In mixture, control double planetary mixer revolution speed 25-35 turns/min, and rate of dispersion 20-50 turns/min, stirs wetting time
For 35-45min；
D, the deionized water for the 15-20% that weight is cathode powder total weight of the mixture, control double planetary mixer revolution are added
Speed 40-50 turns/min, and rate of dispersion 800-1200 turns/min, and the high-viscosity stirring time is 55-65min；
E, it is eventually adding the deionized water for the 10-15% that weight is cathode powder total weight of the mixture, control double planetary mixer is public
Rotary speed 50-60 turns/min, and rate of dispersion 1500-2000 turns/min, and after diluting homogeneous 60-70min, the bonding of the amount is added
Agent continuation vacuumizes de-bubbled under this speed and obtains cathode painting cream again after stirring 35-45min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425711.3A CN108305989A (en) | 2017-12-25 | 2017-12-25 | A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425711.3A CN108305989A (en) | 2017-12-25 | 2017-12-25 | A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108305989A true CN108305989A (en) | 2018-07-20 |
Family
ID=62870626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711425711.3A Pending CN108305989A (en) | 2017-12-25 | 2017-12-25 | A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108305989A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786724A (en) * | 2019-03-11 | 2019-05-21 | 贵州省铜仁华迪斯新能源有限公司 | A kind of ultralow-temperature high-rate type lithium ion cell and preparation method thereof |
| CN112614984A (en) * | 2020-12-25 | 2021-04-06 | 湖州凯金新能源科技有限公司 | Graphite negative electrode material of low-magnetism substance for lithium battery and preparation method thereof |
| CN112928274A (en) * | 2019-12-05 | 2021-06-08 | 恒大新能源技术(深圳)有限公司 | Lithium ion battery cathode material, cathode and lithium ion battery |
| CN113257584A (en) * | 2021-05-08 | 2021-08-13 | 贵州梅岭电源有限公司 | Preparation method of hard carbon slurry for lithium ion capacitor |
| CN114530603A (en) * | 2022-02-21 | 2022-05-24 | 远景动力技术(江苏)有限公司 | Negative electrode, electrochemical device, and electronic apparatus |
| CN115572557A (en) * | 2022-10-11 | 2023-01-06 | 珠海冠宇电池股份有限公司 | Binder and battery comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030039886A1 (en) * | 2001-08-22 | 2003-02-27 | Guiping Zhang | Modified lithium ion polymer battery |
| CN102290577A (en) * | 2011-07-25 | 2011-12-21 | 东莞新能源科技有限公司 | Anode of lithium ion battery |
| CN102544504A (en) * | 2011-12-05 | 2012-07-04 | 深圳市中星动力电池技术有限公司 | Anode material composition for multi-element nanometer vanadium power battery |
| CN102610791A (en) * | 2012-02-27 | 2012-07-25 | 宁德新能源科技有限公司 | Lithium ion battery for plug-in type hybrid power automobile and cathode thereof |
| CN104766949A (en) * | 2014-01-08 | 2015-07-08 | 中山天贸电池有限公司 | Processing method of lithium ion battery negative electrode slurry |
| CN104838526A (en) * | 2012-12-13 | 2015-08-12 | 昭和电工株式会社 | Negative electrode material for lithium ion secondary battery, negative electrode sheet for lithium ion secondary battery, and lithium secondary battery |
-
2017
- 2017-12-25 CN CN201711425711.3A patent/CN108305989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030039886A1 (en) * | 2001-08-22 | 2003-02-27 | Guiping Zhang | Modified lithium ion polymer battery |
| CN102290577A (en) * | 2011-07-25 | 2011-12-21 | 东莞新能源科技有限公司 | Anode of lithium ion battery |
| CN102544504A (en) * | 2011-12-05 | 2012-07-04 | 深圳市中星动力电池技术有限公司 | Anode material composition for multi-element nanometer vanadium power battery |
| CN102610791A (en) * | 2012-02-27 | 2012-07-25 | 宁德新能源科技有限公司 | Lithium ion battery for plug-in type hybrid power automobile and cathode thereof |
| CN104838526A (en) * | 2012-12-13 | 2015-08-12 | 昭和电工株式会社 | Negative electrode material for lithium ion secondary battery, negative electrode sheet for lithium ion secondary battery, and lithium secondary battery |
| CN104766949A (en) * | 2014-01-08 | 2015-07-08 | 中山天贸电池有限公司 | Processing method of lithium ion battery negative electrode slurry |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786724A (en) * | 2019-03-11 | 2019-05-21 | 贵州省铜仁华迪斯新能源有限公司 | A kind of ultralow-temperature high-rate type lithium ion cell and preparation method thereof |
| CN112928274A (en) * | 2019-12-05 | 2021-06-08 | 恒大新能源技术(深圳)有限公司 | Lithium ion battery cathode material, cathode and lithium ion battery |
| CN112928274B (en) * | 2019-12-05 | 2022-07-22 | 恒大新能源技术(深圳)有限公司 | Lithium ion battery cathode material, cathode and lithium ion battery |
| CN112614984A (en) * | 2020-12-25 | 2021-04-06 | 湖州凯金新能源科技有限公司 | Graphite negative electrode material of low-magnetism substance for lithium battery and preparation method thereof |
| CN112614984B (en) * | 2020-12-25 | 2022-11-11 | 湖州凯金新能源科技有限公司 | Graphite negative electrode material of low-magnetism substance for lithium battery and preparation method thereof |
| CN113257584A (en) * | 2021-05-08 | 2021-08-13 | 贵州梅岭电源有限公司 | Preparation method of hard carbon slurry for lithium ion capacitor |
| CN114530603A (en) * | 2022-02-21 | 2022-05-24 | 远景动力技术(江苏)有限公司 | Negative electrode, electrochemical device, and electronic apparatus |
| CN115572557A (en) * | 2022-10-11 | 2023-01-06 | 珠海冠宇电池股份有限公司 | Binder and battery comprising same |
| CN115572557B (en) * | 2022-10-11 | 2024-04-16 | 珠海冠宇电池股份有限公司 | Adhesive and battery comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108305989A (en) | A kind of the cathode painting cream and production method of fast charging and discharging type high power lithium ion cell | |
| CN108306013B (en) | Fast-charging and fast-discharging type high-power lithium ion battery and manufacturing method thereof | |
| US11335895B2 (en) | Micro-capsule type silicon-carbon composite negative electrode material and preparing method and use thereof | |
| WO2016201942A1 (en) | Lithium ion battery having high-rate charge-discharge performance | |
| WO2016202169A2 (en) | High energy density lithium ion battery | |
| EP3859825A1 (en) | Positive electrode additive and preparation method therefor, positive electrode and preparation method therefor, and lithium ion battery | |
| CN112768699A (en) | Sodium ion battery positive plate, preparation method thereof and sodium ion battery | |
| CN108258207B (en) | Positive electrode coating paste of quick-charging and quick-discharging type high-power lithium ion battery and manufacturing method | |
| CN105552344A (en) | Positive plate of lithium ion battery, lithium ion battery and preparation method of lithium ion battery | |
| CN105552324A (en) | Preparation method for lithium iron phosphate coated lithium nickel cobalt manganese composite material | |
| CN110061222B (en) | Preparation method and application of lithium battery slurry | |
| CN105810899A (en) | Lithium ion battery | |
| CN106025194B (en) | A kind of black phosphorus base composite negative pole material and preparation method thereof | |
| WO2016202168A1 (en) | Lithium-ion battery positive-electrode slurry and preparation method therefor | |
| CN105655559A (en) | Lithium ion battery and preparation method thereof | |
| WO2016201941A1 (en) | Lithium ion battery with long cycle performance | |
| CN112713266B (en) | Negative electrode slurry and application thereof | |
| CN102427123A (en) | Lithium ion secondary battery and anode sheet thereof | |
| CN102013517A (en) | Polymer lithium ion low-temperature battery | |
| CN101752545A (en) | Electrode of lithium battery, preparation method of electrode and lithium battery adopting electrode | |
| CN105390683A (en) | Sulfur-based negative electrode material of lithium ion batteries and application thereof | |
| CN105742695A (en) | Lithium-ion battery and preparation method thereof | |
| CN103762335A (en) | Lithium titanate electrode plate and lithium ion battery | |
| CN107611407A (en) | A kind of positive pole of lithium manganese battery formula and preparation method | |
| CN105990606B (en) | A kind of lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180720 |
|
| RJ01 | Rejection of invention patent application after publication |