CN107316977A - A kind of Novel lithium ion power battery negative pole and lithium-ion-power cell - Google Patents
A kind of Novel lithium ion power battery negative pole and lithium-ion-power cell Download PDFInfo
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- CN107316977A CN107316977A CN201710426567.9A CN201710426567A CN107316977A CN 107316977 A CN107316977 A CN 107316977A CN 201710426567 A CN201710426567 A CN 201710426567A CN 107316977 A CN107316977 A CN 107316977A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- 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
- H01M4/13—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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a kind of Novel lithium ion power battery negative pole and lithium-ion-power cell, the lithium ion power cell cathode, is sequentially provided with ceramic coating, cathode size, conductive coating, negative current collector, conductive coating, cathode size and ceramic coating from top to bottom；Negative pole of the present invention, reduces the DC internal resistance of battery, can lift the 2C high rate performances of battery, the security of battery can also be significantly improved, product quality and the market competitiveness are effectively improved, is conducive to widely applying in production, is of great practical significance.
Description
Technical field
The invention belongs to lithium ion power battery technology field, more particularly, to a kind of Novel lithium ion power battery negative pole
And lithium-ion-power cell.
Background technology
With increasing for haze number of days, country starts to incrementally increase to the input of new energy industry, and lithium ion power is electric
Pond is as an important component of new-energy automobile, and because of its environmental protection, the characteristic such as high-energy output causes extensive pass
Note, at present, with the development of technology and stepping up for production efficiency, new-energy automobile has progressively come into huge numbers of families.Lithium from
The extensive use of sub- battery proposes higher requirement to the energy density of battery, while also wanting compromise between security, at present extensively
The need for the lithium-ion battery system of application is increasingly difficult to meet client, it is therefore desirable to constantly improve and innovate.
Current lithium-ion-power cell is mainly coated, with energy density when carrying out negative pole coating on light paper tinsel
Raising, the thickness of coating is more and more thicker, and this infiltration, temperature rise of negative pole performance to follow-up electrolyte etc. all brings certain
Difficulty, is totally unfavorable for the new energy industry of competition.
The content of the invention
In view of this, the present invention is directed to propose a kind of Novel lithium ion power battery negative pole and lithium-ion-power cell,
The temperature rise of battery, improves the electrical property of electrokinetic cell when being infiltrated with improving the electrolyte of negative electrode of lithium ion battery, reducing big multiplying power
And security performance, the competitiveness of enterprise.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of Novel lithium ion power battery negative pole, is sequentially provided with ceramic coating, cathode size, conductive painting from top to bottom
Layer, negative current collector, conductive coating, cathode size and ceramic coating；In the raw material of the conductive coating, including conduction material
Material, the conductive material be CNT, vapour deposition carbon fiber, conductive black, graphene, Delanium, native graphite, in
Between more than one or both of phase carbon microspheres mixture；In the raw material of the ceramic coating, including solid material, it is described solid
Body material is the aluminium of titanium dioxide three, titanium dioxide, boehmite, silica, lithium titanate, zirconium oxide, one kind in boron nitride or two
Plant the mixture of the above；It is preferred that, the negative current collector is copper foil, and the dispersion liquid of conductive coating is water, NMP, methanol, second
The binding agent of mixture more than one or both of alcohol, isopropanol, tert-butyl alcohol, conductive coating and ceramic coating is poly-
Mixtures more than one or both of acid amides, butadiene-styrene rubber, sodium carboxymethylcellulose, epoxy resin, polyesters.
It is preferred that, the conductive coating includes the component of following parts by weight, 7~11 parts of conductive material, and dispersion liquid 80~
95 parts, 1~3 part of binding agent；The ceramic coating, includes the component of following parts by weight, 12~22 parts of solid material, dispersion liquid
65~85 parts, 3~12 parts of binding agent；The cathode size, includes the component of following parts by weight, 90~100 parts of Delanium,
1~3 part of conductive agent, 2~4 parts of binding agent, 95~105 parts of aqueous solvent, 15~25 parts of NMP (1-METHYLPYRROLIDONE)；It is preferred that,
95 parts of Delanium, 2 parts of conductive agent, 3 parts of binding agent, 100 parts of aqueous solvent, 20 parts of NMP.
It is preferred that, the conductive coating includes the component of following parts by weight, and conductive material is carbonaceous mesophase spherules, disperses
Liquid is water and ethanol, and binding agent is polyamide；The ceramic coating includes the component of following parts by weight, and solid material is dioxy
SiClx, dispersion liquid is water and isopropanol, and binding agent is butadiene-styrene rubber.
It is preferred that, the conductive coating includes the component of following parts by weight, and conductive material is 8 parts of carbonaceous mesophase spherules；
Dispersion liquid is 90 parts of water and ethanol, and the weight ratio of water and ethanol is 6:4；Binding agent is 2 parts of polyamide；The ceramic coating bag
The component of following parts by weight is included, solid material is 5 parts of silica 1；Dispersion liquid is 80 parts of water and isopropanol, and water and isopropyl
The weight ratio of alcohol is 7:3；Binding agent is 5 parts of butadiene-styrene rubber.
It is preferred that, the conductive coating includes the component of following weight fraction, and conductive material is multi-layer graphene, dispersion liquid
For water and the tert-butyl alcohol, binding agent is polyamide；The ceramic coating includes the component of following parts by weight, and solid material is metatitanic acid
Lithium, dispersion liquid is water and ethanol；Binding agent is sodium carboxymethylcellulose.
It is preferred that, the conductive coating includes the component of following weight fraction, and conductive material is multi-layer graphene, 10 parts,
Dispersion liquid is 85 parts of water and the tert-butyl alcohol, and both weight ratios are 7:3, binding agent is 2 parts of polyamide；The ceramic coating includes
The component of following parts by weight, solid material is 20 parts of lithium titanate, and dispersion liquid is water and ethanol, and the weight ratio of water and ethanol is
5:5；Binding agent is 10 parts of sodium carboxymethylcellulose.
It is preferred that, the thickness sum of the conductive coating of the negative current collector both sides is 1.5~10 μm, not including negative pole collection
Fluid；The thickness sum of the two-layer ceramic coating is 6 μm, not including middle negative current collector, conductive coating and negative pole
Slurry；It is preferred that, the thickness sum of conductive coating is 2 μm；The thickness sum of the cathode size of both sides is 50-250 μm；It is described negative
The thickness of pole collector is 6-20 μm.
The present invention also provides a kind of method for preparing Novel lithium ion power battery negative pole as described above, including following step
Suddenly,
1) be first respectively coated one layer of conductive coating on the two sides of negative electrode of lithium ion battery collector, conductive coating be according to than
Example measures each raw material, then disperses and obtains electrically-conducting paint after sonic oscillation each raw material through high speed, is coated on through anilox roll negative
It is to be dried rear standby on the collector of pole；
2) and then by cathode size be coated on the outside of conductive coating, it is to be coated after the completion of, rolled, negative after rolling
The outside of pole slurry, is respectively coated ceramic coating, that is, obtains negative pole.
It is preferred that, the solid content of the electrically-conducting paint is 5%~30%, and dispersing mode is that high speed planet is scattered and ultrasound is shaken
Swing, jitter time is 30min-8h, sonic oscillation frequency is 20KHZ-200KHz；Consolidating for the slurry that the ceramic coating is used contains
Measure as 10%-50%, dispersing mode is that high speed planet is scattered and sonic oscillation, and jitter time is 2h-8h, and sonic oscillation frequency is
20KHZ-200KHz, is then carrying out negative pole coating.
Present invention simultaneously provides a kind of lithium-ion-power cell, including lithium ion power cell cathode as described above or such as
Lithium ion power cell cathode prepared by upper described preparation method, it is LiFePO that its cathode active material, which is,4、
LiMn2O2、LiNixCoyMnzO2, 0 ＜ x, y, z ＜ 1 more than one or both of x+y+z=1 mixes by different proportion；
Barrier film is polyethylene, polypropylene is single/multiple and its single-side/double-side coated ceramic barrier film；Shell is box hat, aluminum hull, plastics
One kind in shell, aluminum-plastic packaging.
Relative to prior art, a kind of Novel lithium ion power battery negative pole and lithium ion power electricity of the present invention
Pond, has the advantage that：
Lithium ion power cell cathode of the present invention, is applied using negative copper foil primary coat technology and cathode pole piece surface
Cover ceramic layer technology, each coating cooperates, reduce the DC internal resistance of battery, lifting can battery 2C high rate performances, moreover it is possible to
The security of battery is significantly improved, product quality and the market competitiveness is effectively improved, is conducive to widely in production should
With being of great practical significance.
Brief description of the drawings
Fig. 1 is the simple structure schematic diagram of the Novel lithium ion power battery negative pole described in embodiment；
1st, ceramic coating；2nd, cathode size；3rd, conductive coating；4th, negative current collector；
Embodiment
In addition to being defined, technical term used has and the invention one of ordinary skill in the art in following examples
The identical meanings being commonly understood by.Test reagent used, is routine biochemistry reagent unless otherwise specified in following examples；
The experimental method, is conventional method unless otherwise specified.
The present invention is described in detail with reference to embodiment.
A kind of Novel lithium ion power battery negative pole, is sequentially provided with ceramic coating 1, cathode size 2, conductive painting from top to bottom
Layer 3, negative current collector 4, conductive coating 3, cathode size 2 and ceramic coating 1.
Embodiment 1
A kind of Novel lithium ion power battery negative pole, its preparation method is as follows,
1) one layer of conductive coating is coated on negative electrode of lithium ion battery collector, conductive coating includes following parts by weight
Raw material；Conductive material is that 8 parts of MCMB, dispersion liquid are 90 parts of water and ethanol, and the weight ratio of water and ethanol is 6:4、
Binding agent is 2 parts of polyamide, disperses through high speed and solid content is obtained after sonic oscillation for 8% electrocondution slurry, then through anilox roll
It is coated on copper foil, thickness is 2 μm of double thickness (the thickness sum of the conductive coating of both sides), to be dried rear standby；
2) cathode size that normal homogenization process makes is coated on the negative current collector with conductive coating, correlation coating
Parameter is consistent with the technological parameter of normal production procedure, it is to be coated after the completion of, rolled, after the completion of rolling, coated ceramic apply
Layer；
The cathode size, includes the component of following parts by weight, 95 parts of Delanium, 2 parts of conductive agent, 3 parts of binding agent,
100 parts of aqueous solvent, 20 parts of NMP.The conductive agent is SP；The binding agent is butadiene-styrene rubber.The thickness of the cathode size of both sides
Sum is 200 μm；The thickness of the negative current collector is 6 μm.
The slurry of the ceramic coating, includes the component of following parts by weight, 5 parts of silica 1, dispersion liquid are water and different
80 parts of propyl alcohol, and both weight ratios are 7:3, binding agent is 5 parts of butadiene-styrene rubber, disperses through high speed and is consolidated after sonic oscillation
Content is 15% ceramic slurry, is then coated on the pole piece for having been coated with electrocondution slurry and cathode size, and thickness is two-sided
6 μm of (the thickness sum of the ceramic coating of both sides), subsequent production process is consistent with normal production battery, treats that resultant battery goes out
DC internal resistance, high rate performance, the security performance of battery are tested after coming, related procedure is as follows；Electrocondution slurry preparation → conductive coating
Coating → conductive coating drying → negative pole homogenate → is coated with → rolls, and → ceramic coating coating → cutting → drying → lamination → is dry
Dry → fluid injection → standing 24h → subsequent handling
A kind of lithium-ion-power cell, including negative pole produced above, positive pole LiNi0.6Co0.2Mn0.2O2；Barrier film is individual layer
PE films, 25 microns of thickness；Shell is aluminum plastic film.
Embodiment 2
A kind of Novel lithium ion power battery negative pole, its preparation method is as follows,
1) one layer of conductive coating is coated on negative electrode of lithium ion battery collector, the slurry of conductive coating includes following weight
The component of number, conductive material is that 10 parts of multi-layer graphene, dispersion liquid are 85 parts of water and the tert-butyl alcohol, and both weight ratios are 7:
3rd, binding agent is 2 parts of polyamide, and it is 8% conductive to disperse to obtain solid content with (frequency of oscillation 50KHz) after sonic oscillation through high speed
Slurry, is then coated on copper foil through anilox roll, and thickness is 2 μm of double thickness, to be dried rear standby；
2) cathode size made of normal homogenization process is coated on the negative current collector with conductive coating, and correlation is applied
Cloth parameter is consistent with the technological parameter of normal production procedure, it is to be coated after the completion of, rolled, after the completion of rolling, coated ceramic
Coating；
The cathode size, includes the component of following parts by weight, 95 parts of Delanium, 2 parts of conductive agent, 3 parts of binding agent,
100 parts, NMP20 parts of aqueous solvent.The conductive agent is SP；The binding agent is butadiene-styrene rubber.The thickness of the cathode size of both sides
Sum is 200 μm；The thickness of the negative current collector is 6 μm.
The slurry of the ceramic coating includes the component of following parts by weight, and 20 parts of lithium titanate, dispersion liquid are water and ethanol
70 parts, and both weight ratios are 5:5, binding agent is 10 parts of sodium carboxymethylcellulose, disperses through high speed and is obtained after sonic oscillation
Solid content is 20% ceramic slurry, is then coated on the pole piece for having been coated with electrocondution slurry and negative pole major ingredient, thickness is double
5 μm of face, subsequent production process is consistent with normal production battery, tested after resultant battery comes out battery DC internal resistance,
High rate performance, security performance, related procedure are as follows；
Electrocondution slurry preparation → conductive coating coating → conductive coating drying → negative pole homogenate → is coated with → rolled → ceramics
Coating coating → cutting → drying → lamination → drying → fluid injection → standing 12h → subsequent handling
A kind of lithium-ion-power cell, including negative pole produced above, extremely just LiNi0.6Co0.2Mn0.2O2；Barrier film is single
Layer PE films, 25 microns of thickness；Shell is aluminum plastic film.
Comparative example 1：The lithium ion battery of normal production procedure, without conductive coating, without ceramic coating, by normal process
Production and aging, test DC internal resistance, high rate performance, the security performance of battery,
Flow is as follows；Negative pole homogenate → negative pole is coated with → rolls → cutting → and dries → lamination → drying → fluid injection → standing
24h → subsequent handling
Comparative example 2：Negative current collector only has one side to be coated with conductive coating, and the surface of conductive coating coats cathode size,
The surface coated ceramic coating of cathode size, the operation of remaining be the same as Example 1.
Electrocondution slurry preparation → conductive coating one side coating → conductive coating drying → negative pole homogenate → is coated with → rolls →
Ceramic coating coating → cutting → drying → lamination → drying → fluid injection → standing 12h → subsequent handling
A kind of lithium-ion-power cell, including negative pole produced above, extremely just LiNi0.6Co0.2Mn0.2O2；Barrier film is single
Layer PE films, 25 microns of thickness；Shell is aluminum plastic film.
Comparative example 1, comparative example 2 and embodiment 1, embodiment 2 are carried out to the contrast of performance, comparing result is as follows：
From above table as can be seen that after using negative pole primary coat coating and ceramic surface coating, battery it is straight
Stream internal resistance decreases, and the performance of 2C rate of charge has clear improvement, and temperature rise also has obvious reduction, while also substantially increasing electricity
The security in pond；The time of repose after battery liquid-filling can also be reduced simultaneously, production efficiency is substantially increased.
The preferred embodiment of the invention is the foregoing is only, creation is not intended to limit the invention, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc. should be included in the invention
Protection domain within.
Claims (10)
1. a kind of Novel lithium ion power battery negative pole, it is characterised in that：Ceramic coating, negative pole slurry are sequentially provided with from top to bottom
Material, conductive coating, negative current collector, conductive coating, cathode size and ceramic coating；In the raw material of the conductive coating, bag
Conductive material is included, the conductive material is CNT, vapour deposition carbon fiber, conductive black, graphene, Delanium, day
Mixture more than one or both of right graphite, MCMB；In the raw material of the ceramic coating, including solid material
Material, the solid material is in the aluminium of titanium dioxide three, titanium dioxide, boehmite, silica, lithium titanate, zirconium oxide, boron nitride
One or more kinds of mixtures；It is preferred that, the negative current collector is copper foil, the dispersion liquid of conductive coating is water, NMP,
The bonding of mixture more than one or both of methanol, ethanol, isopropanol, tert-butyl alcohol, conductive coating and ceramic coating
Agent is mixing more than one or both of polyamide, butadiene-styrene rubber, sodium carboxymethylcellulose, epoxy resin, polyesters
Thing.
2. Novel lithium ion power battery negative pole according to claim 1, it is characterised in that：The conductive coating is included such as
The component of lower parts by weight, 7~11 parts of conductive material, 80~95 parts of dispersion liquid, 1~3 part of binding agent；The ceramic coating, bag
Include the component of following parts by weight, 12~22 parts of solid material, 65~85 parts of dispersion liquid, 3~12 parts of binding agent；The negative pole slurry
Material, includes the component of following parts by weight, 90~100 parts of Delanium, 1~3 part of conductive agent, 2~4 parts of binding agent, aqueous solvent
95~105 parts, 15~25 parts of NMP；It is preferred that, 95 parts of Delanium, 2 parts of conductive agent, 3 parts of binding agent, 100 parts of aqueous solvent,
20 parts of NMP.
3. Novel lithium ion power battery negative pole according to claim 2, it is characterised in that：The conductive coating is included such as
The component of lower parts by weight, conductive material is carbonaceous mesophase spherules, and dispersion liquid is water and ethanol, and binding agent is polyamide；It is described
Ceramic coating includes the component of following parts by weight, and solid material is silica, and dispersion liquid is water and isopropanol, and binding agent is
Butadiene-styrene rubber.
4. Novel lithium ion power battery negative pole according to claim 3, it is characterised in that：The conductive coating is included such as
The component of lower parts by weight, conductive material is 8 parts of carbonaceous mesophase spherules；Dispersion liquid is 90 parts of water and ethanol, and water and ethanol
Weight ratio is 6：4；Binding agent is 2 parts of polyamide；The ceramic coating includes the component of following parts by weight, and solid material is two
15 parts of silica；Dispersion liquid is 80 parts of water and isopropanol, and the weight ratio of water and isopropanol is 7：3；Binding agent is butadiene-styrene rubber 5
Part.
5. Novel lithium ion power battery negative pole according to claim 2, it is characterised in that：The conductive coating is included such as
The component of lower weight fraction, conductive material is multi-layer graphene, and dispersion liquid is water and the tert-butyl alcohol, and binding agent is polyamide；It is described
Ceramic coating includes the component of following parts by weight, and solid material is lithium titanate, and dispersion liquid is water and ethanol；Binding agent is carboxylic first
Base sodium cellulosate.
6. Novel lithium ion power battery negative pole according to claim 5, it is characterised in that：The conductive coating is included such as
The component of lower weight fraction, conductive material is multi-layer graphene, 10 parts, and dispersion liquid is 85 parts of water and the tert-butyl alcohol, and both weights
Amount is than being 7:3, binding agent is 2 parts of polyamide；The ceramic coating includes the component of following parts by weight, and solid material is metatitanic acid
20 parts of lithium, dispersion liquid is 70 parts of water and ethanol, and the weight ratio of water and ethanol is 5：5；Binding agent is sodium carboxymethylcellulose 10
Part.
7. the Novel lithium ion power battery negative pole according to any one of claim 1~6, it is characterised in that：The negative pole
The thickness sum of the conductive coating of collector both sides is 1.5~10 μm, not including negative current collector；The two-layer ceramic coating
Thickness sum is 6 μm, not including middle negative current collector, conductive coating and cathode size；It is preferred that, the thickness of conductive coating
It is 2 μm to spend sum；The thickness sum of the cathode size of both sides is 50-250 μm；The thickness of the negative current collector is 6-20 μm.
8. a kind of method of the Novel lithium ion power battery negative pole prepared as described in any one of claim 1~6, its feature exists
In：Comprise the following steps,
1) one layer of conductive coating is first respectively coated on the two sides of negative electrode of lithium ion battery collector, conductive coating is proportionally to measure
Each raw material is taken, then each raw material is disperseed through high speed and obtains electrically-conducting paint after sonic oscillation, negative pole collection is coated on through anilox roll
It is to be dried rear standby on fluid；
2) and then by cathode size be coated on the outside of conductive coating, it is to be coated after the completion of, rolled, starched after rolling in negative pole
The outside of material, is respectively coated ceramic coating, that is, obtains negative pole.
9. preparation method according to claim 8, it is characterised in that the solid content of the electrically-conducting paint is 5%~30%,
Dispersing mode is that high speed planet disperses and sonic oscillation, and jitter time is 30min-8h, and sonic oscillation frequency is 20KHZ-
200KHz；The solid content for the slurry that the ceramic coating is used is 10%-50%, and dispersing mode is that high speed planet is scattered and ultrasonic
Vibration, jitter time is 2h-8h, and sonic oscillation frequency is 20KHZ-200KHz, is then carrying out negative pole coating.
10. a kind of lithium-ion-power cell, it is characterised in that including the lithium ion power as described in any one of claim 1~7
Lithium ion power cell cathode prepared by the preparation method described in GND or claim 8 or 9, its positive electrode active material material
Expect to be LiFePO4、LiMn2O2、LiNixCoyMnzO2, 0 ＜ x, y, z ＜ 1, more than one or both of x+y+z=1 is not by
Mix in proportion；Barrier film is polyethylene, polypropylene is single/multiple and its single-side/double-side coated ceramic barrier film；Shell is
One kind in box hat, aluminum hull, plastic housing, aluminum-plastic packaging.
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| CN108346831A (en) * | 2018-01-04 | 2018-07-31 | 湖南立方新能源科技有限责任公司 | A kind of electrode structure and the lithium ion battery containing the electrode structure |
| CN109755557A (en) * | 2019-01-04 | 2019-05-14 | 桑顿新能源科技有限公司 | A kind of safe high-voltage high-energy-density lithium ion battery and preparation method thereof |
| CN109860538A (en) * | 2018-12-20 | 2019-06-07 | 天津市捷威动力工业有限公司 | A kind of lithium battery silicon-carbon cathode slurry and preparation method thereof, lithium ion battery |
| CN109950467A (en) * | 2019-03-26 | 2019-06-28 | 天津市捷威动力工业有限公司 | A kind of preparation method that pole piece table applies, the pole piece and lithium ion battery applied with table |
| CN112068002A (en) * | 2020-09-21 | 2020-12-11 | 昆山宝创新能源科技有限公司 | Method for rapidly evaluating ceramic composite pole piece |
| CN113004735A (en) * | 2021-03-04 | 2021-06-22 | 辛格顿(常州)新材料科技有限公司 | Matte black copper foil and preparation method thereof |
| CN113193171A (en) * | 2021-05-06 | 2021-07-30 | 合肥国轩高科动力能源有限公司 | High-safety ternary lithium ion battery and preparation method thereof |
| CN113471404A (en) * | 2020-03-15 | 2021-10-01 | 深圳格林德能源集团有限公司 | Inorganic ceramic coating negative plate of lithium ion battery and manufacturing method thereof |
| CN114156439A (en) * | 2021-10-21 | 2022-03-08 | 浙江南都电源动力股份有限公司 | Negative pole piece and lithium iron phosphate battery |
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