CN106571463A - Lithium ion battery and preparation method thereof - Google Patents
Lithium ion battery and preparation method thereof Download PDFInfo
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- CN106571463A CN106571463A CN201610989366.5A CN201610989366A CN106571463A CN 106571463 A CN106571463 A CN 106571463A CN 201610989366 A CN201610989366 A CN 201610989366A CN 106571463 A CN106571463 A CN 106571463A
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- ion battery
- lithium ion
- lithium
- pole piece
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
-
- 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
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
-
- 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
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a lithium ion battery and a preparation method thereof, and relates to the technical field of secondary batteries. The lithium ion battery comprises a positive electrode piece, a negative electrode piece, an electrolyte solution and a separation film, wherein the positive electrode piece comprises a current collector, a positive electrode active material, a conductive agent and a binder; the negative electrode piece comprises a current collector, a negative electrode active material, a conductive agent and a binder; the positive electrode active material is a nickel cobalt lithium manganate ternary material having a layered structure; the negative electrode active material is formed by mixing one or more of meso-carbon microbeads, composite graphite, mesoporous carbon and carbon fibers. The low temperature discharge performance of the lithium ion battery can be improved, the discharge capacity retention rate at a low temperature of -20 DEG C can reach up to 80%, and high-magnifying-power charge and discharge can be achieved at room temperature. Therefore, the preparation method of the lithium ion battery can be suitable for a low temperature system and also can be used at high temperature and high magnifying power only by meeting the production requirements of the lithium ion battery.
Description
Technical field
The present invention relates to secondary battery technology, more particularly to a kind of lithium ion battery and preparation method thereof.
Background technology
Lithium rechargeable battery is due to high-energy-density, high cycle life, memory-less effect, self discharge be low, nothing
Pollution, the features such as, achieve business in the traditional consumption field of batteries such as battery of mobile phone, notebook computer, MP3, IPAD, electronic toy
Industry application.
Lithium ion battery is used for electric automobile field, it is desirable to which lithium ion battery possesses high rate charge-discharge ability, to protect
The design speed per hour of card electric automobile, climbing capacity, acceleration etc..The high rate performance of traditional consumption lithium ion battery is poor, it is impossible to
Directly apply to electrokinetic cell field.Research shows：The design of battery, the structure of electrode material, particle size, electrode surface
The conductive capability of electric conductivity and electrolyte affects the embedding lithium degree of electrode material surface, and exploitation is conducive to lithium ion quickly to expand
Scattered lithium-ion battery system has great importance.
The operating temperature of conventional lithium ion battery is typically at 0-55 DEG C.With the continuous expansion of lithium ion battery applications,
The fields such as Aero-Space, deep-sea detecting, polar expedition, military project need can be even lower at -20 DEG C temperature under normal work
Lithium ion battery.Electrolyte intermediate ion electrical conductivity is reduced under low temperature, and active material inside lithium ion diffusion coefficient is reduced, electrolysis
The wellability such as liquid and barrier film is deteriorated, and the lithium ion diffusion of electrolyte/electrode interface and charge transfer effciency are reduced, and are caused conventional
At low temperature capacity is low for lithium ion battery, and decay is serious, and circulating ratio poor performance etc. can not meet the demand in terms of these.In order to
Improve the cryogenic property of lithium ion battery, Smatr etc. (M.C.Smatr et al., Journal of power source,
2003,119-121:349-358.) have studied impact of the different electrolytes to battery cryogenic property.But only change under usual conditions
Transformation electrolytic liquid is the cryogenic property that cannot effectively improve lithium ion battery, need to take into full account the structure and wellability of electrode material
The impact of diffusion and electric charge transfer to lithium ion.
After lithium ion cell positive, negative pole, barrier film, the big fundamental of electrolyte four has been taken into full account, the present invention is obtained
Low-temperature lithium ion battery, not only can realize at -20 DEG C 1C discharge, can powerful discharge and recharge (3C charge and discharges under room temperature
More than 1000 weeks).
The content of the invention
It is an object of the present invention to provide a kind of lithium ion battery, it can work at low ambient temperatures, again can
The lithium ion battery of high power charging-discharging is realized in the case of room temperature.
The present invention one further objective is that the technique that enable to prepare above-mentioned lithium ion battery more optimizes, real
The low-temperature working and high rate performance of existing lithium ion battery is taken into account.
Especially, the invention provides a kind of lithium ion battery, including anode pole piece, cathode pole piece, electrolyte and barrier film,
The anode pole piece includes collector, positive electrode active materials, conductive agent and binding agent, and the cathode pole piece includes collector, bears
Pole active material, conductive agent and binding agent, wherein, the positive electrode active materials are with layer structure nickle cobalt lithium manganate ternary material
Material, the negative active core-shell material is one or more mixing in carbonaceous mesophase spherules, composite graphite, mesoporous carbon, carbon fiber
Form.
Further, the ratio of positive electrode active materials is between 85%-95% in described anode pole piece, and anode pole piece is double
Face surface density is 100-300g/m2.
Ball of the layered structure cobalt nickel lithium manganate ternary material used preferably as positive electrode active materials
D50 particle diameters are at 5-10 μm, and specific surface area is in 0.2-0.5m2/g。
Further, the ratio of active material is between 90%-96% in described cathode pole piece, and the cathode pole piece is double
Face surface density is 50-150g/cm2.
Preferably, a ball D50 particle diameter of the negative active core-shell material is at 1-10 μm, and specific surface area is in 5-20m2/g.
Further, the electrolyte is nonaqueous electrolytic solution, and it includes straight chain based organic solvent and lithium salts.
Preferably, the organic solvent includes ethylene carbonate, Allyl carbonate, diethyl carbonate or first ethyl carbonate
One or more in ester, lithium salts used is the one kind in lithium hexafluoro phosphate, LiBF4 or lithium perchlorate.
Further, barrier film used is olefin-based film, and thin film porosity is not less than 42%.
Especially, present invention also offers a kind of method for preparing lithium ion battery as above, wherein lithium-ion electric
Every production standard in pond is as described above.
Present invention improves the low temperature performance of lithium ion battery, both can protect in-the 20 of low temperature DEG C of discharge capacities
Holdup can be capable of achieving powerful discharge and recharge at normal temperatures again up to 80%.Therefore, the method for preparing the lithium ion battery
The production requirement of the lithium ion battery need to only be met can just make its both be suitable for low temperature system, again can room temperature high magnification use.
According to the detailed description below in conjunction with accompanying drawing to the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, the advantages and features of the present invention.
Description of the drawings
Describe some specific embodiments of the present invention in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is discharge curve contrast of the lithium ion battery of embodiment 1 in embodiment one at 25 DEG C and -20 DEG C；
Fig. 2 is the discharge curve contrast of embodiment 1 and embodiment 2 under -20 DEG C of low temperature in embodiment one；
Fig. 3 is the room temperature 3C charging/3C discharge cycles curves of embodiment 1 in embodiment one；
Fig. 4 is the 0.33C charging/1C discharge cycles curves of -20 DEG C of 1 low temperature of embodiment in embodiment one.
Specific embodiment
Embodiment one：
Present embodiment describes a kind of lithium ion battery, it can include in general manner anode pole piece, cathode pole piece, electrolysis
Liquid and barrier film, the anode pole piece includes collector, positive electrode active materials, conductive agent and binding agent, and the cathode pole piece includes
Collector, negative active core-shell material, conductive agent and binding agent, wherein, the positive electrode active materials are with layer structure nickel cobalt manganese
Sour lithium ternary material, the negative active core-shell material be carbonaceous mesophase spherules, composite graphite, mesoporous carbon, carbon fiber in one kind or
Person is various to be mixed.
Further, the ratio of positive electrode active materials is between 85%-95% in described anode pole piece, and anode pole piece is double
Face surface density is 100-300g/m2.
Ball of the layered structure cobalt nickel lithium manganate ternary material used preferably as positive electrode active materials
D50 particle diameters are at 5-10 μm, and specific surface area is in 0.2-0.5m2/g。
Further, the ratio of active material is between 90%-96% in described cathode pole piece, and the cathode pole piece is double
Face surface density is 50-150g/cm2.
Preferably, a ball D50 particle diameter of the negative active core-shell material is at 1-10 μm, and specific surface area is in 5-20m2/g.
Further, the electrolyte is nonaqueous electrolytic solution, and it includes straight chain based organic solvent and lithium salts.
Preferably, the organic solvent includes ethylene carbonate, Allyl carbonate, diethyl carbonate or first ethyl carbonate
One or more in ester, lithium salts used is the one kind in lithium hexafluoro phosphate, LiBF4 or lithium perchlorate.
Further, barrier film used is olefin-based film, and thin film porosity is not less than 42%.
As a example by assembling the lithium ion battery of 1700mAH, but the negative material for adopting is different.
Wherein, embodiment 1 is that positive pole adopts cobalt nickel lithium manganate ternary material (LiNi0.5Co0.2Mn0.3O2), a ball
D50 particle diameters are at 8.4 μm.Negative pole adopts mesophase carbon ball, and a ball D50 is at 7.8 μm.
Embodiment 1 is by positive active material cobalt nickel lithium manganate ternary material (LiNi0.5Co0.2Mn0.3O2), binding agent
Polyvinylidene fluoride (PVDF), conductive agent, according to 93:2:5 ratio is dispersed in METHYLPYRROLIDONE (NMP), is passed through
Sufficiently form anode sizing agent after dispersed with stirring.Anode sizing agent is coated in into the two sides of the aluminium foil that thickness is 16 μm, then through roller
Pressure, section, formation anode pole piece.The two-sided surface density of anode pole piece is 300g m2。
By negative electrode active material composite graphite, binding agent (sodium carboxymethyl cellulose), conductive agent and styrene-butadiene latex according to 92:
3:3:1 ratio is dispersed in aqueous solvent, and through being sufficiently stirred for dispersion cathode size is formed, and the cathode size of acquisition is coated in
Thickness is the two sides of 9 μm of Copper Foil, and Jing after roll-in, section negative plate is formed.The two-sided surface density of cathode pole piece is 180g m2。
Finally again by gained negative plate and positive plate soldering polar ear, by winding, entering shell, welding, fluid injection, chemical conversion, partial volume
Obtain the lithium ion battery described in embodiment 1.In addition, electrolyte adopts ternary system (1mol/L LiPF6/EC+DMC+
EMC), barrier film used is PE films, and porosity is 42%.
And 2 kinds of negative poles of embodiment are to adopt composite graphite, a ball D50 is at 10.5 μm.It is to answer negative electrode active material
Graphite, binding agent (sodium carboxymethyl cellulose), conductive agent and styrene-butadiene latex are closed according to 92:3:3:1 ratio is dispersed in aqueous solvent
In, cathode size is formed through being sufficiently stirred for dispersion, the cathode size of acquisition is coated in into the two sides of the Copper Foil that thickness is 9 μm,
Negative plate is formed Jing after roll-in, section.The two-sided surface density of cathode pole piece is 180g m2.Gained negative plate and positive plate are welded
Lug, by winding, entering the lithium ion battery that shell, welding, fluid injection, chemical conversion, partial volume obtain described in embodiment 2.Electrolyte with
Embodiment 1 is identical, using ternary system (1mol/L LiPF6/ EC+DMC+EMC), barrier film used is PE films, and porosity is
42%.
When laboratory test is carried out, the test data for specifically carrying out experiment test is as follows.Fig. 1 is lithium in embodiment 1
Ion battery is contrasted in 25 DEG C and -20 DEG C of discharge curve；Fig. 2 is embodiment 1 and embodiment 2 under -20 DEG C of low temperature
Discharge curve is contrasted, and Fig. 3 is the room temperature 3C charging/3C discharge cycles curves of embodiment 1；Fig. 4 is -20 DEG C of 1 low temperature of embodiment
0.33C charging/1C discharge cycles curves.Following test data contrast table can be summarized：
Table 1：Implement 1 and 2 lithium ion batteries for making and spend performance test data in 25 degree of room temperature and low temperature -20
Table 2：The lithium ion battery that embodiment 1 and example 2 make loop test data under room temperature and low temperature
It is seen that, present invention improves the low temperature performance of lithium ion battery, both can be in-the 20 of low temperature DEG C of decentralizations
Capacitance conservation rate can be capable of achieving powerful discharge and recharge at normal temperatures again up to 80%.
Embodiment two：
Present embodiment describes a kind of manufacture method of lithium ion battery is as follows：
The first step：Slurrying.
1st, positive pole slurrying.First by a certain amount of binding agent (polyvinylidene fluoride PVDF) and METHYLPYRROLIDONE
(NMP) stir according to certain ratio, be subsequently adding a certain proportion of conductive agent, positive active material, stirring mixing is equal
It is anode sizing agent after even.
2nd, negative pole slurrying.First by a certain amount of binding agent (sodium carboxymethyl cellulose CMC) and water according to certain ratio
Stir, be subsequently adding a certain proportion of conductive agent, negative electrode active material, after being uniformly mixed, add a certain amount of SBR
Latex, continues to stir mixing, is cathode size.
Second step：Coating.
The anode sizing agent and cathode size of preparation are uniformly coated in respectively by aluminium foil and copper foil current collector using coating machine
Above.
3rd step：Roll-in.
Positive plate and negative plate after coating is rolled by into respectively certain thickness, so as to obtain roll-in after pole piece.
4th step：Section.
Pole piece after roll-in is cut into into the pole piece of specific dimensions size.
5th step：Winding.
Using up- coiler anode pole piece, cathode pole piece, membrane winding are got up to form the battery core of lithium ion battery.
6th step：Enter shell and welding.
7th step：Fluid injection, chemical conversion and partial volume.
Using the technique and the system of formula of the lithium ion battery of the above, can significantly improve the low temperature of lithium ion battery
Discharge performance, low temperature -20 DEG C of discharge capacity conservation rates up to 80%；Can be capable of achieving at normal temperatures again powerful
Discharge and recharge.The battery of the system of invention had both been suitable for low temperature system, again can room temperature high magnification use.
So far, although those skilled in the art will appreciate that detailed herein illustrate and describe multiple showing for the present invention
Example property embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all these other variations or modifications.
Claims (9)
1. a kind of lithium ion battery, including anode pole piece, cathode pole piece, electrolyte and barrier film, it is characterised in that the positive pole pole
Piece include collector, positive electrode active materials, conductive agent and binding agent, the cathode pole piece include collector, negative active core-shell material,
Conductive agent and binding agent, wherein, the positive electrode active materials are with layer structure cobalt nickel lithium manganate ternary material, the negative pole
Active material is that one or more in carbonaceous mesophase spherules, composite graphite, mesoporous carbon, carbon fiber are mixed.
2. lithium ion battery according to claim 1, it is characterised in that positive electrode active materials in described anode pole piece
Between 85%-95%, the two-sided surface density of anode pole piece is 100-300g/m2 to ratio.
3. lithium ion battery according to claim 1 and 2, it is characterised in that described in using as positive electrode active materials
Ball D50 particle diameter of layer structure cobalt nickel lithium manganate ternary material is at 5-10 μm, and specific surface area is in 0.2-0.5m2/g。
4. lithium ion battery according to claim 1, it is characterised in that the ratio of active material in described cathode pole piece
Between 90%-96%, the two-sided surface density of the cathode pole piece is 50-150g/cm2.
5. the lithium ion battery according to claim 1 or 4, it is characterised in that a ball D50 of the negative active core-shell material
Particle diameter is at 1-10 μm, and specific surface area is in 5-20m2/g.
6. lithium ion battery according to claim 1, it is characterised in that the electrolyte is nonaqueous electrolytic solution, and it includes
Straight chain based organic solvent and lithium salts.
7. lithium ion battery according to claim 6, it is characterised in that the organic solvent includes ethylene carbonate, carbon
One or more in acid propylene ester, diethyl carbonate or the first and second base carbonic esters, lithium salts used is lithium hexafluoro phosphate, tetrafluoro boron
One kind in sour lithium or lithium perchlorate.
8. lithium ion battery according to claim 1, it is characterised in that barrier film used is olefin-based film, and membrane pores
Gap rate is not less than 42%.
9. a kind of method of the lithium ion battery prepared as described in claim 1 to 8.
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| CN201610989366.5A CN106571463A (en) | 2016-11-10 | 2016-11-10 | Lithium ion battery and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108511788A (en) * | 2018-03-29 | 2018-09-07 | 东莞市智盈新能源有限公司 | A kind of high magnification ternary system start and stop lithium ion battery and preparation method thereof |
| CN109411745A (en) * | 2017-08-17 | 2019-03-01 | 江苏津谊新能源科技有限公司 | A kind of novel tertiary material lithium ion battery |
| CN109461901A (en) * | 2018-09-28 | 2019-03-12 | 桑顿新能源科技有限公司 | A kind of appraisal procedure of pulp of lithium ion battery and its stability |
| CN109671974A (en) * | 2018-12-10 | 2019-04-23 | 江苏天鹏电源有限公司 | A kind of low temperature fast charge long-life high power dynamic lithium battery |
| CN113659107A (en) * | 2021-07-15 | 2021-11-16 | 恒大新能源技术(深圳)有限公司 | Battery pole piece, preparation method thereof and secondary battery |
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| CN105336942A (en) * | 2015-11-19 | 2016-02-17 | 上海空间电源研究所 | Fully-sealed Li-ion storage battery based on ternary cathode material and preparation method of fully-sealed Li-ion storage battery |
| CN105552355A (en) * | 2015-12-16 | 2016-05-04 | 山东精工电子科技有限公司 | High-rate lithium-ion battery and preparation method thereof |
| CN105591151A (en) * | 2015-12-09 | 2016-05-18 | 山东精工电子科技有限公司 | Multiplying power type ternary battery and preparation method thereof |
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| CN105336942A (en) * | 2015-11-19 | 2016-02-17 | 上海空间电源研究所 | Fully-sealed Li-ion storage battery based on ternary cathode material and preparation method of fully-sealed Li-ion storage battery |
| CN105591151A (en) * | 2015-12-09 | 2016-05-18 | 山东精工电子科技有限公司 | Multiplying power type ternary battery and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109411745A (en) * | 2017-08-17 | 2019-03-01 | 江苏津谊新能源科技有限公司 | A kind of novel tertiary material lithium ion battery |
| CN108511788A (en) * | 2018-03-29 | 2018-09-07 | 东莞市智盈新能源有限公司 | A kind of high magnification ternary system start and stop lithium ion battery and preparation method thereof |
| CN109461901A (en) * | 2018-09-28 | 2019-03-12 | 桑顿新能源科技有限公司 | A kind of appraisal procedure of pulp of lithium ion battery and its stability |
| CN109671974A (en) * | 2018-12-10 | 2019-04-23 | 江苏天鹏电源有限公司 | A kind of low temperature fast charge long-life high power dynamic lithium battery |
| CN113659107A (en) * | 2021-07-15 | 2021-11-16 | 恒大新能源技术(深圳)有限公司 | Battery pole piece, preparation method thereof and secondary battery |
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