CN109167021A - Lithium ion cell electrode piece and preparation method thereof and lithium ion battery - Google Patents
Lithium ion cell electrode piece and preparation method thereof and lithium ion battery Download PDFInfo
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- CN109167021A CN109167021A CN201811087066.3A CN201811087066A CN109167021A CN 109167021 A CN109167021 A CN 109167021A CN 201811087066 A CN201811087066 A CN 201811087066A CN 109167021 A CN109167021 A CN 109167021A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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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 belongs to battery technology fields, and in particular to a kind of lithium ion cell electrode piece and preparation method thereof and lithium ion battery.The lithium ion cell electrode piece, the active material layer of the collection liquid surface is located at including collector and painting, the active material layer includes active material, hydrophobing agent, conductive agent and binder, wherein, the surface of the active material, the conductive agent and the binder is combined with the hydrophobing agent, and the active material is positive electrode active materials or negative electrode active material.Such lithium ion cell electrode piece is under the higher environmental condition of humidity, it can prevent its water suction in transhipment and operating process from excessively leading to properties for follow and to the influence of battery performance, the proper property for ensuring that electrode slice reduces storage cost of wheeling.
Description
Technical field
The invention belongs to battery technology fields, and in particular to a kind of lithium ion cell electrode piece and preparation method thereof and lithium from
Sub- battery.
Background technique
Lithium ion battery is widely used in hand with excellent properties such as its high voltage, high-energy density and long circulation lifes
Machine and Notebook Battery, power battery and energy-storage battery etc..Wherein, mobile phone and Notebook Battery are accounted for by lithium ion battery completely
According at all other kinds of battery is unable to reach the rigors of these portable intelligent devices.With lithium ion battery technology
Development, shared ratio is also increasing in power battery energy-storage battery, for current development trend, lithium-ion electric
Pond is in a rapid development stage, has a extensive future.
Existing lithium ion cell electrode piece is excessively high primarily directed to cost, energy density is relatively low and high-temperature behavior and follows
The deficiency of ring performance provides improved technical solution；Lithium ion cell electrode piece required after preparing rear stage procedure than
It is carried out in more harsh environment, it is more lower better that ambient humidity requires, and just can guarantee the performance that electrode slice is brought into normal play, pole piece in this way
Water absorbing properties largely effect on it and save and transport process, water suction easily occurs in lithium ion battery use process leads to penalty
The problem of do not improve very well always；Therefore, the prior art has much room for improvement.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of lithium ion cell electrode piece and its system are provided
Preparation Method and lithium ion battery, it is intended to solve the hygroscopic technical problem of existing lithium ion cell electrode piece.
For achieving the above object, The technical solution adopted by the invention is as follows:
One aspect of the present invention provides a kind of lithium ion cell electrode piece, including collector and painting are located at the collection liquid surface
Active material layer, the active material layer includes active material, hydrophobing agent, conductive agent and binder, wherein it is described activity material
The surface of material, the conductive agent and the binder is combined with the hydrophobing agent, and the active material is positive electrode active materials
Or negative electrode active material.
Active material, conductive agent and binder in lithium ion cell electrode piece provided by the invention, in active material layer
Surface be combined with hydrophobing agent, i.e. the hydrophobing agent surface that is incorporated in a variety of materials on electrode slice surface is uniformly coated in this way
On a current collector, make entire electrode slice that all there is hydrophobicity, the hydrophobic surface of electrode slice can be greatly improved compared with the prior art
Product, such lithium ion cell electrode piece can prevent it in transhipment and operating process under the higher environmental condition of humidity
Water suction excessively leads to properties for follow and the influence to battery performance, ensures that the proper property of electrode slice, reduces
Storage cost of wheeling.
Another aspect of the present invention provides a kind of preparation method of lithium ion cell electrode piece, includes the following steps:
The active material, hydrophobing agent, conductive agent and binder are dissolved in solvent, electrode slurry is obtained；
On a current collector by electrode slurry coating, it is dried.
In the preparation method of lithium ion cell electrode piece provided by the invention, in burden process by adding in the slurry
Hydrophobing agent, so that in the electrode slurry of preparation, active pole material, conductive agent and binder can be adequately exposed to hydrophobing agent,
Hydrophobing agent sufficiently infiltrates in electrode slurry, and then solvent is distilled using the high temperature of coating process, entire electricity obtained in this way
Pole piece all has hydrophobicity, which has not only saved cost, but also has all carried out hydrophobicity processing to entire pole piece, makes
Finally electrode slice hygroscopicity obtained substantially reduce, thus greatly reduce the transhipment of lithium ion cell electrode piece and save at
This.
Finally, the present invention also provides a kind of lithium ion battery, including electrode slice, the electrode slice are above-mentioned lithium of the invention
Ion battery electrode piece.
Lithium ion battery in the present invention is because containing the distinctive lithium ion cell electrode piece of the present invention, therefore, it is possible to reduce
Lithium ion battery is influenced by moisture, is thus greatly reduced the electrode slice transhipment in lithium ion battery preparation process and is saved
Cost.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
On the one hand, the embodiment of the invention provides a kind of lithium ion cell electrode piece, including collector and painting be located at it is described
The active material layer of collection liquid surface, the active material layer include active material, hydrophobing agent, conductive agent and binder, wherein
The surface of the active material, the conductive agent and the binder is combined with the hydrophobing agent, and the active material is positive
Pole active material or negative electrode active material.
In lithium ion cell electrode piece provided in an embodiment of the present invention, active material, conductive agent in active material layer and
The surface of binder is combined with hydrophobing agent, i.e. the hydrophobing agent surface that is incorporated in a variety of materials on electrode slice surface, equal in this way
It is even to be coated on a current collector, make entire electrode slice that all there is hydrophobicity, dredging for electrode slice can be greatly improved compared with the prior art
Water meter area, such lithium ion cell electrode piece can prevent it from transporting and operating under the higher environmental condition of humidity
Water suction excessively leads to properties for follow and the influence to battery performance in the process, ensures that the inherency of electrode slice
Can, reduce storage cost of wheeling.
Further, in the lithium ion cell electrode piece of the embodiment of the present invention, the hydrophobing agent include butanol, amylalcohol,
Hexanol, enanthol, octanol, butanone, pentanone, hexanone, heptanone, octanone, nonanone, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, second
At least one of acetoacetic ester, methyl acetoacetate, tributyl phosphate, tetraethyl silane and N- N-formyl morpholine N.Above-mentioned hydrophobing agent
It is incorporated in the surface of active material, conductive agent and binder, can preferably improve the hydrophobicity of electrode slice.Further, institute
The boiling point for stating hydrophobing agent is 100-300 DEG C.Hydrophobing agent in the boiling spread, even if high in the coating process of preparation process
Temperature is dried, and also guarantees that hydrophobing agent will not volatilize as much as possible, so that binding capacity of the hydrophobing agent in electrode slice is improved, into one
Step has saved cost.
Further, in the lithium ion cell electrode piece of the embodiment of the present invention, the active material, conductive agent and bonding
The mass ratio of agent and the hydrophobing agent is (84-95): (5-10): (3-5): (0.2-3).In the quality than in range, hydrophobing agent
It is sufficiently combined with active material, conductive agent and binder, to keep the hydrophobic performance of electrode slice best.
Further, in the lithium ion cell electrode piece of the embodiment of the present invention, the conductive agent includes carbon nanotube
(CNT), at least one of acetylene black, graphene, Ketjen black and carbon black (Super-p) etc.；The binder includes gathering inclined fluorine
At least one of ethylene (PVDF), carboxymethyl cellulose and butadiene-styrene rubber etc..
Further, in the lithium ion cell electrode piece of the embodiment of the present invention, the lithium ion cell electrode piece is positive
Pole piece, the active material be positive electrode active materials, and the positive electrode active materials include: nickel cobalt manganese (NCM) ternary material (such as
NCM 523, NCM 622, NCM 613, NCM 712, NCM 811 etc.), nickel cobalt aluminium (NCA) ternary material, LiFePO4, cobalt acid
One of lithium and LiMn2O4 are a variety of.Alternatively, the lithium ion cell electrode piece is negative electrode tab, the active material is cathode
Active material, and the negative electrode active material includes: one of graphite, graphene and silicon-carbon or a variety of.I.e. the hydrophobing agent is
It can be used for positive plate, can be used for negative electrode tab.
On the other hand, the embodiment of the present invention provides a kind of preparation method of above-mentioned lithium ion cell electrode piece, including as follows
Step:
S01: the active material, hydrophobing agent, conductive agent and binder are dissolved in solvent, electrode slurry is obtained；
S02: it on a current collector by electrode slurry coating, is dried.
In the preparation method of lithium ion cell electrode piece provided in an embodiment of the present invention, in burden process by slurry
Middle addition hydrophobing agent, so that in the electrode slurry of preparation, active pole material, conductive agent and binder can be adequately exposed to dredge
Aqua, hydrophobing agent sufficiently infiltrate in electrode slurry, and then solvent is distilled using the high temperature of coating process, obtained whole in this way
A electrode slice all has hydrophobicity, which has not only saved cost, but also has all carried out at hydrophobicity to entire pole piece
Reason thus greatly reduces the transhipment of lithium ion cell electrode piece and protects so that final electrode slice hygroscopicity obtained substantially reduces
The cost deposited.
Further, in above-mentioned steps S01, electrode slurry may include: active material: 84-95 parts；Binder:
3-5 parts；Conductive agent: 5-10 parts；Hydrophobing agent: 0.2-3 parts；Solvent: 35-110 parts；If it is positive plate is prepared, by following weight
Part component prepares electrode slurry: positive electrode active materials: 85-95 parts；Binder: 3-5 parts；Conductive agent: 5-10 parts；Hydrophobing agent:
0.2-3 parts；Solvent: 35-40 parts；Because after electrode slice is made, solvent can volatilize, collector table is located at so applying in final positive plate
The anode active material layer in face contains: positive electrode active materials: 85-95 parts；Binder: 3-5 parts；Conductive agent: 5-10 parts；It is hydrophobic
Agent: 0.2-3 parts.If it is preparation negative electrode tab, then electrode slurry is prepared by following parts by weight of component: negative electrode active material: 84-94
Part；Binder: 3-5 parts；Thickener: 1-3 parts；Conductive agent: 5-10 parts；Hydrophobing agent: 2-2 parts；Solvent: 105-110 parts.It is final negative
The anode active material layer that painting is located at collection liquid surface in pole piece contains: negative electrode active material: 84-94 parts；Binder: 3-5 parts；
Conductive agent: 5-10 parts；Hydrophobing agent: 2-2 parts.Solvent in the step is preferably N-Methyl pyrrolidone (NMP).
Specifically, in order to come into full contact with hydrophobing agent with active pole material, conductive agent and binder.The process for preparing slurry can
With are as follows:
First a part of solvent (such as 30-50% total solvent) and conductive agent are added in mulser, homogeneous stirring is (preferably
20 hertz of matter frequency, 20 hertz of stirring frequency)；Binder is added in mulser again, homogeneous stirs (preferably homogeneous frequency 40
Hertz, 35 hertz of stirring frequency)；Then hydrophobing agent is added in mulser, and homogeneous stirring (30 hertz of homogeneous frequency, stirring frequency
30 hertz of rate)；Finally active material and remaining solvent are added in mulser, homogeneous stirs (preferably 10 hertz of homogeneous frequency
Hereby, 10 hertz of stirring frequency).The stirring of preceding homogeneous three times, be make under relatively high speed dispersion condition positive/negative active material with
And conductive agent and binder can be adequately exposed to hydrophobing agent, last time relative low speeds disperse certain time, can further protect
Card hydrophobing agent sufficiently infiltrates.
It is highly preferred that include the following steps: that a certain amount of NMP and conductive agent are added in mulser by (1), homogeneous stirring
10-20min.20 hertz of homogeneous frequency, 20 hertz of stirring frequency.(2) scattered PVDF glue is added in mulser,
Matter stirs 60min.40 hertz of homogeneous frequency, 35 hertz of stirring frequency.(3) by a certain amount of hydrophobic agent addition agent to mulser
In, homogeneous stirs 10-20min.30 hertz of homogeneous frequency, 30 hertz of stirring frequency.(4) required positive electrode active materials powder is added
Enter into mulser, residue NMP is added, adjusts slurry viscosity, stir at low speed 12h after homogeneous stirring 60min.10 hertz of homogeneous frequency
Hereby, 10 hertz of stirring frequency.
Further, in above-mentioned steps S02, the electrode slurry that viscosity is 3000-6000Pas is coated in described
On collector；Electrode slurry in the range of viscosities is not easily settled and is easy to apply on the surface of collector.Further,
It is (10-20) × 10 by surface density-5g/mm2, the electrode slurry is coated on the collector.Final electrode slice is not only
With good hydrophobicity and there is good chemical property.
The electrode slurry prepared is coated: slurry is coated on aluminium foil, adjusts 100-130 DEG C of coating temperature,
Solvent is evaporated in coating drying process, and hydrophobing agent is dispersed in pole piece, is tightly bonded after drying with collector
It is close, required pole piece is made later using roll-in.By high temperature action to the material modification on pole piece, pole piece material (active pole
Material, conductive agent and binder) it is connect with hydrophobing agent by chemical bond, molecular separating force or hydrogen bond, so that pole piece be made to reach hydrophobic effect
Fruit.The positive plate prepared or negative electrode tab and diaphragm, electrolyte are assembled into lithium ion battery.
In short, the preparation method of the embodiment of the present invention, carries out action of soaking hydrophobing agent is added in dispensing stage, is being coated with
Stage drying carries out hydrophobic treatment to it, saves process and cost, and final entire electrode slice obtained all has hydrophobicity, phase
Than substantially increasing hydrophobic surface product using processed hydrophobic powder.
Finally, the embodiment of the present invention also provides a kind of lithium ion battery, including electrode slice, the electrode slice is of the invention
Above-mentioned lithium ion cell electrode piece.
Lithium ion battery in the embodiment of the present invention therefore can because containing the distinctive lithium ion cell electrode piece of the present invention
It is influenced with reducing lithium ion battery by moisture, thus greatly reduces the electrode slice transhipment in lithium ion battery preparation process
With the cost of preservation.
Specifically, which includes positive plate, negative electrode tab and electrolyte.And the positive plate can be the present invention
The lithium ion cell electrode piece of embodiment, and/or, negative electrode tab is also possible to the lithium ion cell electrode piece of the embodiment of the present invention.
The present invention successively carried out test of many times, and it is further detailed as reference pair invention progress now to lift A partial experiment result
Thin description, is described in detail combined with specific embodiments below.
Comparative example 1
A kind of preparation method of positive plate, includes the following steps:
Slurry is prepared by following parts by weight first:
Adjusting viscosity is 3000Pas-6000Pas, and the slurry mixed is coated uniformly on aluminium foil, coats thickness in monolayer
It is 40 μm, bilayer coating.Roll pressing is carried out after drying into required electrode slice.
Wherein, coating electrode piece surface density 20*10-5g/mm2；The electrode slice for being placed in Temperature and Humidity Control room is area
0.05m2。
Embodiment 1
A kind of preparation method of positive plate, includes the following steps:
Slurry is prepared by following parts by weight first:
Adjusting viscosity is 3000Pas-6000Pas, and the slurry mixed is coated uniformly on aluminium foil, coats thickness in monolayer
It is 40 μm, bilayer coating.Roll pressing is carried out after drying into required electrode slice.
Wherein, coating electrode piece surface density 20*10-5g/mm2；It is placed in the electrode slice area 0.05m of Temperature and Humidity Control room2
(shape specification is with comparative example 1).
Comparative example 2
A kind of preparation method of negative electrode tab, includes the following steps:
Slurry is prepared by following parts by weight first:
Adjusting viscosity is 3000Pas-6000Pas, and the slurry mixed is coated uniformly on aluminium foil, coats thickness in monolayer
It is 40 μm, bilayer coating.Roll pressing is carried out after drying into required electrode slice.
Wherein, coating electrode piece surface density 10*10-5g/mm2；It is placed in the electrode slice area of Temperature and Humidity Control room
0.05m2。
Embodiment 2
A kind of preparation method of negative electrode tab, includes the following steps:
Slurry is prepared by following parts by weight first:
Adjusting viscosity is 3000Pas-6000Pas, and the slurry mixed is coated uniformly on aluminium foil, coats thickness in monolayer
It is 40 μm, bilayer coating.Roll pressing is carried out after drying into required electrode slice.
Wherein, coating electrode piece surface density 10*10-5g/mm2；It is placed in the electrode slice area 0.05m of Temperature and Humidity Control room2
(shape specification is with comparative example 2).
The detection of hygroscopicity contrast effect:
By the electrode slice handled by hygroscopicity and untreated electrode slice (electrode slice material and surface density are identical)
It is placed in Temperature and Humidity Control room progress hygroscopicity comparison, Temperature and Humidity Control room is controlled at 25 DEG C, humidity 60%, with 24 hours
For the weight change of unit recording electrode piece, until its weight is not further added by (moisture absorption saturation), then calculate after moisture absorption
The increased percentage of example weight, to judge its hydrophobic effect, concrete outcome is shown in Table 1.
Table 1
Weight rate refers to: (weight-origin pole slice weight after moisture absorption saturation)/origin pole slice weight × 100%.
By the data of table 1 can be seen that the pole piece weight rate after hydrophobic treatment be significantly less than it is untreated
Pole piece.Wherein, its hygroscopicity reduces 76%=(13.18-3.125)/13.18 positive plate after treatment, and negative electrode tab
Hygroscopicity reduce 70%=(20-6)/20, pole piece its hygroscopicity so as to obtain by hydrophobic treatment substantially reduces.
Thus it is ensured that pole piece reduced performance storage cost of wheeling.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of preparation method of lithium ion cell electrode piece, which comprises the steps of:
Active material, hydrophobing agent, conductive agent and binder are dissolved in solvent, electrode slurry is obtained；
On a current collector by electrode slurry coating, it is dried.
2. preparation method as described in claim 1, which is characterized in that the electrode slurry for being 3000-6000Pas by viscosity
Coated on the collector；And/or
It is (10-20) × 10 by surface density-5g/mm2, the electrode slurry is coated on the collector.
3. preparation method as described in claim 1, which is characterized in that the hydrophobing agent include butanol, amylalcohol, hexanol, enanthol,
Octanol, butanone, pentanone, hexanone, heptanone, octanone, nonanone, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, ethyl acetate, second
At least one of methyl acetoacetate, tributyl phosphate, tetraethyl silane and N- N-formyl morpholine N.
4. preparation method as described in claim 1, which is characterized in that the active material is positive electrode active materials, and described
Positive electrode active materials include: one in nickel-cobalt-manganese ternary material, nickel cobalt aluminium ternary material, LiFePO4, cobalt acid lithium and LiMn2O4
Kind is a variety of；Alternatively,
The active material is negative electrode active material, and the negative electrode active material includes: one in graphite, graphene and silicon-carbon
Kind is a variety of.
5. a kind of lithium ion cell electrode piece is located at the active material layer of the collection liquid surface including collector and painting, special
Sign is: the active material layer includes active material, hydrophobing agent, conductive agent and binder, wherein the active material, institute
The surface for stating conductive agent and the binder is combined with the hydrophobing agent, and the active material is positive electrode active materials or cathode
Active material.
6. lithium ion cell electrode piece as claimed in claim 5, which is characterized in that the hydrophobing agent include butanol, amylalcohol, oneself
Alcohol, enanthol, octanol, butanone, pentanone, hexanone, heptanone, octanone, nonanone, butyraldehyde, valeral, hexanal, enanthaldehyde, octanal, aldehyde C-9, acetic acid
At least one of ethyl ester, methyl acetoacetate, tributyl phosphate, tetraethyl silane and N- N-formyl morpholine N.
7. lithium ion cell electrode piece as claimed in claim 5, which is characterized in that the conductive agent includes carbon nanotube, second
At least one of acetylene black, graphene, Ketjen black and carbon black；And/or
The binder includes at least one of Kynoar, carboxymethyl cellulose and butadiene-styrene rubber.
8. lithium ion cell electrode piece as claimed in claim 5, which is characterized in that the active material, conductive agent and bonding
The mass ratio of agent and the hydrophobing agent is (84-95): (5-10): (3-5): (0.2-3).
9. such as the described in any item lithium ion cell electrode pieces of claim 5-8, which is characterized in that the lithium ion cell electrode
Piece is positive plate, the active material be positive electrode active materials, and the positive electrode active materials include: nickel-cobalt-manganese ternary material,
One of nickel cobalt aluminium ternary material, LiFePO4, cobalt acid lithium and LiMn2O4 are a variety of；Alternatively,
The lithium ion cell electrode piece is negative electrode tab, and the active material is negative electrode active material, and the negative electrode active material
Material includes: one of graphite, graphene and silicon-carbon or a variety of.
10. a kind of lithium ion battery, including electrode slice, it is characterised in that: the electrode slice is claim 5-9 any described
Lithium ion cell electrode piece.
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| CN111740177A (en) * | 2019-07-26 | 2020-10-02 | 瑞新材料科技(香港)有限公司 | Positive electrode material, positive electrode, battery, and battery pack |
| CN112002906A (en) * | 2020-07-16 | 2020-11-27 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and battery |
| CN113487965A (en) * | 2021-06-22 | 2021-10-08 | 武汉华星光电半导体显示技术有限公司 | Support member, manufacturing method thereof and display module |
| CN113614941A (en) * | 2020-10-19 | 2021-11-05 | 宁德新能源科技有限公司 | Electrochemical device and electronic device comprising same |
| CN114551789A (en) * | 2020-11-26 | 2022-05-27 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740177A (en) * | 2019-07-26 | 2020-10-02 | 瑞新材料科技(香港)有限公司 | Positive electrode material, positive electrode, battery, and battery pack |
| CN111740177B (en) * | 2019-07-26 | 2022-09-16 | 眉山茵地乐科技有限公司 | Positive electrode material, positive electrode, battery, and battery pack |
| CN112002906A (en) * | 2020-07-16 | 2020-11-27 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and battery |
| CN112002906B (en) * | 2020-07-16 | 2023-07-25 | 瑞海泊有限公司 | Hydrophobic electrode, preparation method thereof and battery |
| CN113614941A (en) * | 2020-10-19 | 2021-11-05 | 宁德新能源科技有限公司 | Electrochemical device and electronic device comprising same |
| WO2022082355A1 (en) * | 2020-10-19 | 2022-04-28 | 宁德新能源科技有限公司 | Electrochemical device and electronic device containing same |
| CN113614941B (en) * | 2020-10-19 | 2024-02-20 | 宁德新能源科技有限公司 | Electrochemical device and electronic device comprising same |
| CN114551789A (en) * | 2020-11-26 | 2022-05-27 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN113487965A (en) * | 2021-06-22 | 2021-10-08 | 武汉华星光电半导体显示技术有限公司 | Support member, manufacturing method thereof and display module |
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