CN108365177A - A kind of high safety type ternary battery cathode sheet and preparation method thereof - Google Patents
A kind of high safety type ternary battery cathode sheet and preparation method thereof Download PDFInfo
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- CN108365177A CN108365177A CN201810168042.4A CN201810168042A CN108365177A CN 108365177 A CN108365177 A CN 108365177A CN 201810168042 A CN201810168042 A CN 201810168042A CN 108365177 A CN108365177 A CN 108365177A
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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
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
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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
- H01M4/04—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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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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
- H01M4/62—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
Abstract
The present invention relates to a kind of high safety type ternary battery cathode sheets and preparation method thereof.The preparation method includes step：S1：By weight, by carbon negative electrode powder 40 45 parts be mixed with beating with 45 55 parts of 0.2 1 parts of binder, 15 parts of conductive agent, 28 parts of organic acid and organic solvent, stable slurry is made；S2：Nanometer grade polypropylene and/or polyethylene and nano-silicon are added into slurry obtained by S1；The nano-silicon is 0.1% 2.5% relative to the additive amount of slurry obtained by S1；And/or the nano-silicon is 4% 100% relative to the dosage of nanometer grade polypropylene and/or polyethylene；S3：Slurry obtained by S2 is coated in copper foil tape, the negative plate is made in drying, roll-in and slice.Negative plate prepared by the present invention can effectively prevent because battery internal short-circuit leads to the generation of thermal runaway, to maximize the security hidden trouble for solving ternary battery in design source.
Description
Technical field
The present invention relates to battery pole piece manufacturing technology field, more particularly to a kind of system of high safety type ternary battery cathode sheet
Preparation Method.
Background technology
Ternary battery is because it is with high-energy density, high working voltage, service life length, memory-less effect, course continuation mileage
The advantages that long, becomes focus of people's attention in recent years, in power battery field, the positive surging emergence of ternary material, and ternary material
It effectively can overcome the problems such as cobalt acid lithium material cost is excessively high, lithium manganate material stability is not high, LiFePO4 capacity is low simultaneously,
With price advantage.Negative plate can use PVDF (Kynoar) or water soluble adhesive as bonding agent, be added conductive agent,
After chemical reagent and carbon negative electrode powder, slurry is made, is coated on copper foil and is made.The traditional operating procedure of negative plate is：First make
Make the negative electrode slurry of ternary battery, then dried, dispensing, slurrying, coating, using drying, compacting, cut-parts etc. it is a series of plus
Pole piece is made in work.
Although ternary battery has a so many advantage, safety is the maximum short slab of its development, poor high temperature stability,
Cause ternary battery that can't enter power battery field on a large scale, the safety of ternary material at present is an industry problems.
The security risk for how effectively solving ternary battery, avoids battery that thermal runaway phenomenon occurs in internal short-circuit, has become
For domestic and international each enterprise's urgent need to resolve the problem of.
Invention content
To solve the security risk of ternary battery, a kind of high safety type ternary battery cathode sheet of present invention offer and its preparation
Method maximizes the security hidden trouble for solving ternary battery in design source.
The preparation method, includes the following steps and (only includes the following steps)：
S1：In parts by weight, by 40-45 parts of carbon negative electrode powder and 0.2-1 parts of binder, 1-5 parts of conductive agent, organic acid
2-8 parts are mixed with beating with 45-55 parts of organic solvent, and stable slurry is made；
S2：Nanometer grade polypropylene and/or polyethylene and nano-silicon are added into slurry obtained by S1；
The nano-silicon is 0.1%-2.5% relative to the additive amount of slurry obtained by S1；
And/or the nano-silicon is 4%-100% relative to the dosage of nanometer grade polypropylene and/or polyethylene；S3：It will
Slurry is coated in copper foil tape obtained by S2, and the negative plate is made in drying, roll-in and slice.
It is an unexpected discovery of the invention that in above-mentioned negative electrode slurry formula, nano-silicon is added, battery heat can be significantly improved
Situation out of control, additionally it is possible to promote the capacity of battery.
Preferably, the ratio of the nanometer grade polypropylene and nanoscale polyethylene is 0.5-0.8: 1.In above-mentioned dosage control
Under system, lithium can be further prevented to be precipitated and generate dendrite.
When being prepared using above-mentioned formula, not only lithium is prevented to be precipitated, formula is more stable, while can promote battery appearance
Amount.
As the preferred embodiment of the present invention, the ratio of the nano-silicon and S1 gained slurries is (0.8-1.5)：(88-
101)。
The nano-silicon and the ratio of the nanometer grade polypropylene and/or polyethylene are (0.8-1.5)：(1.8-4), wherein
The polyacrylic additive amount of nanoscale is less than the additive amount of nanoscale polyethylene.
About preparation method of the present invention, in S1, it is preferable that the carbon negative electrode powder is selected from electrographite, natural
One kind in graphite, carbonaceous mesophase spherules, petroleum coke, carbon fiber, thermal decomposed resins carbon.
The binder is Kynoar.
The conductive agent is one or more in super carbon black, conductive carbon black, carbon fiber or carbon nanotube.(this hair
The bright carbon nanotube is Conductive carbon nanotubes)
The organic acid is oxalic acid；The oxalic acid of preferred mass a concentration of 99.6%.
The organic solvent is N-Methyl pyrrolidone.
About preparation method of the present invention, in S2, the nano level polypropylene, nano level polyethylene and receive
Rice silicon is three dimensions of grain diameter in 100nm.
The nanometer grade polypropylene, polyethylene preparation method are as follows：
Based on high density poly propylene or polyethylene quality, the organo montmorillonite after 1%-8% is activated and compatilizer, 1%-
8% carboxylic acid, melt blending, then extruded granulation at a temperature of 150-200 DEG C with high density poly propylene or polyethylene, you can
Nano level polypropylene or polyethylene.
Wherein, the compatilizer is cyclic acid anhydride, is selected from maleic anhydride or phthalic anhydride, and the organo montmorillonite is
The organo montmorillonite of acid activation.
Existing acid activation method can be used in the activation of organo montmorillonite, do not do herein it is specifically limited, only provide it is a kind of compared with
For preferred method：First the purified water stirring of 20 times of quality of montmorillonite mine soil is fully impregnated 10 hours, waits for that it is fully expanded
Afterwards, so that solution is sieved through 200 mesh vibrating screens while stirring, to isolate large granular impurity mine soil, be added under room temperature
0.8% sodium carbonate liquor and with the concentrated sulfuric acid adjust pH=6.5,3h is stirred in dispersion machine.
The preparation method of the nano-silicon is：
Tetraethyl orthosilicate (TEOS) is added in the absolute ethyl alcohol of mixing 5min or more, ammonium hydroxide, in 29 DEG C of hydrolysis temperature
Lower water-bath 4h.Through the SiO that is centrifuged at a high speed out2Then bead is centrifuged repeatedly washing with absolute ethyl alcohol, until during solution is
Property, it is dried to obtain SiO2Powder.
Wherein SiO in tetraethyl orthosilicate (TEOS)2Content is not less than 28%, ammonium hydroxide (NH3H2O) content is 25%-
28%.
Then by gained SiO2In 200 DEG C of molten salt systems, is restored using metal Al, nano-silicon is prepared.
Wherein, in S2, the polypropylene, polyethylene, nano-silicon any in-process can be added in S1.
As the preferred embodiment of the present invention, a kind of preparation method of battery cathode sheet is provided, including：
40-42 parts of graphite cathode powder, 0.2-0.8 parts of Kynoar, 2-3 parts of conductive black, 2-5 parts of oxalic acid, You Jirong
Agent is 45-50 parts of N-Methyl pyrrolidone；0.8-1.5 parts of grade polypropylene of nanometer, 1-2.5 parts of nanoscale polyethylene, nano-silicon
0.8-1.5 parts；
Wherein, in above-mentioned value range, the polyacrylic additive amount of nanoscale is less than the additive amount of nanoscale polyethylene.
It, can be from overall coordination, preferably to prevent battery internal short-circuit using above-mentioned specific component and weight proportion
Occur, and also has the effect for promoting battery capacity.
Negative plate prepared by the present invention can effectively prevent because battery internal short-circuit leads to the generation of thermal runaway, thus
It designs source and maximizes the security hidden trouble for solving ternary battery.Negative plate prepared by the present invention is by being added nanoscale poly- third
Alkene, polyethylene, nano-silicon, when the raising of internal short-circuit temperature occurs for battery, polypropylene, polyethylene powders fusing so that battery is negative
Pole forms tough nano-interface.Lithium ion mobility channel can be effectively blocked, while anti-even if there is a small amount of lithium ion to occur
Cathode should be moved to, nano-silicon can also increase cathode and be reacted with lithium ion, prevent analysis lithium phenomenon, inhibit tree-shaped crystallization life
Length punctures diaphragm, and positive and negative anodes is avoided further to contact the generation for causing battery thermal runaway, to solve to perplex industry all the time
Safety issue.
The present invention provides a kind of battery including above-mentioned negative plate together, preferably, the positive plate of the battery uses
Nickle cobalt lithium manganate (LiNi0.5Co0.2Mn0.3O2).When positive plate uses nickle cobalt lithium manganate, can more embody prevents the excellent of thermal runaway
Point.
Further, above-mentioned positive plate is prepared in the method that China Patent Publication No. CN106848194A is provided.
Description of the drawings
Fig. 1 is battery cathode piece preparation method block diagram of the present invention
Fig. 2 is that internal short-circuit protection philosophy figure occurs for battery of the present invention
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
In following embodiment, involved polypropylene, polyethylene, nano-silicon are through superfine grinding nanosizing to three dimensions
In 100nm or less.
In following embodiment, used nanometer grade polypropylene, polyethylene are prepared by following methods：By highly dense
Spend polypropylene or polyethylene quality meter, the organo montmorillonite after 1%-8% is activated and compatilizer, the carboxylic acid of 1%-8%, with high
Density polypropylene or polyethylene melt blending at a temperature of 150-200 DEG C, then extruded granulation, you can obtain nano level polypropylene
Or polyethylene；
Wherein, the compatilizer is cyclic acid anhydride, is selected from maleic anhydride or phthalic anhydride, and the organo montmorillonite is
The organo montmorillonite of acid activation.
In following embodiment, used nano-silicon is prepared by following methods：By tetraethyl orthosilicate, it is added
It mixes in the absolute ethyl alcohol of 5min or more, ammonium hydroxide, the water-bath 4-5h at 25-30 DEG C of hydrolysis temperature.Through being centrifuged at a high speed
Go out SiO2Then bead is centrifuged repeatedly washing with absolute ethyl alcohol, until solution is neutrality, be dried to obtain SiO2Powder；
Wherein SiO in tetraethyl orthosilicate2Content is not less than 28%, and ammonium hydroxide content is 25%-28%；
Then by gained SiO2In 200 DEG C of molten salt systems, is restored using metal Al, nano-silicon is prepared.
Embodiment 1
In the present embodiment, first by graphite cathode powder 84Kg, polyvinylidene fluoride 1Kg, conductive black 4Kg, oxalic acid 6Kg (matter
Measure it is a concentration of 99.6%), N-Methyl pyrrolidone 98Kg, polypropylene 2Kg, polyethylene 3Kg, nano-silicon 2Kg are mixed into uniformly
Slurry.
By slurry agitation 6 hours.Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried
It is dry, it carries out roll-in and slice obtains required negative plate.The polypropylene, polyethylene, nano-silicon through superfine grinding nanosizing extremely
Three dimensions are in 100nm or less.
Embodiment 2
In the present embodiment, first by carbonaceous mesophase spherules 80Kg, Kynoar 1.5Kg, carbon nanotube 4Kg, oxalic acid
4Kg, N-Methyl pyrrolidone 95Kg, polypropylene 2kg, polyethylene 3kg, nano-silicon 2Kg are mixed into uniform slurry, slurry agitation
Time is 6 hours.
Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, roll-in is carried out and is cut
Piece obtains required negative plate.The polypropylene, polyethylene, nano-silicon exist through superfine grinding nanosizing to three dimensions
100nm or less.
Embodiment 3
In the present embodiment, first by thermal decomposed resins carbon 90Kg, Kynoar 2Kg, super carbon black 3.5Kg, oxalic acid
5Kg, N-Methyl pyrrolidone 105Kg, polypropylene 2kg, polyethylene 2.5Kg, nano-silicon 1Kg are mixed into uniform slurry, slurry
Mixing time is 6 hours.
Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, roll-in is carried out and is cut
Piece obtains required negative plate.The polypropylene, polyethylene, nano-silicon exist through superfine grinding nanosizing to three dimensions
100nm or less.
Embodiment 4
In the present embodiment, first by graphite cathode powder 80Kg, Kynoar 1.5Kg, carbon fiber 4Kg, oxalic acid 6Kg,
N-Methyl pyrrolidone 95Kg, polypropylene 2kg, polyethylene 3Kg, nano-silicon 3Kg are mixed into uniform slurry, slurry agitation time
It is 6 hours.Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, roll-in is carried out and is cut
Piece obtains required negative plate.The polypropylene, polyethylene, nano-silicon exist through superfine grinding nanosizing to three dimensions
100nm or less.
Embodiment 5
In the present embodiment, first by graphite cathode powder 86Kg, Kynoar 1Kg, conductive carbon black 4Kg, oxalic acid 6Kg,
N-Methyl pyrrolidone 95Kg, polypropylene 1.5kg, polyethylene 3Kg, nano-silicon 2.5Kg are mixed into uniform slurry, slurry agitation
Time is 6 hours.Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, roll-in is carried out
Required negative plate is obtained with slice.The polypropylene, polyethylene, nano-silicon exist through superfine grinding nanosizing to three dimensions
100nm or less.
Embodiment 6
In the present embodiment, first by graphite cathode powder 80Kg, Kynoar 1.6Kg, carbon nanotube 4Kg, oxalic acid
6Kg, N-Methyl pyrrolidone 98Kg, polypropylene 2kg, polyethylene 3Kg, nano-silicon 1.2Kg are mixed into uniform slurry, and slurry stirs
It is 6 hours to mix the time.Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, roller is carried out
Pressure and slice obtain required negative plate.The polypropylene, polyethylene, nano-silicon are equal to three dimensions through superfine grinding nanosizing
In 100nm or less.
Embodiment 7
In the present embodiment, first by graphite cathode powder 84Kg, Kynoar 1Kg, super carbon black 4Kg, oxalic acid 6Kg,
N-Methyl pyrrolidone 98Kg, polypropylene 2kg, polyethylene 3Kg, nano-silicon 1.4Kg are mixed into uniform slurry, when slurry agitation
Between be 6 hours.Slurry is coated with coating machine on copper foil of affluxion body band.Coated negative plate is dried, carry out roll-in and
Slice obtains required negative plate.The polypropylene, polyethylene, nano-silicon exist through superfine grinding nanosizing to three dimensions
100nm or less.
Embodiment 8-14
The present embodiment provides the lithium ion batteries for separately including the preparation-obtained negative plates of embodiment 1-7.
The lithium ion battery includes：Embodiment 1-7 is respectively adopted in shell, anode, cathode, diaphragm and electrolyte, cathode
The negative plate of middle offer, just extremely nickle cobalt lithium manganate (LiNi0.5Co0.2Mn0.3O2), diaphragm is polyethylene or ceramic diaphragm, electrolysis
Liquid is ternary electrolyte, and the manufacturing process of lithium ion battery is：Positive and negative anodes dispensing-positive and negative anodes slurrying-positive and negative anodes coating-positive and negative anodes
Drying-positive and negative anodes roll-in-positive and negative anodes film-making-positive and negative anodes winding-assembling-baking-slip casting-chemical conversion-sealing of hole-partial volume-product battery.
According to the above method to prepare the lithium ion battery using the negative plate that embodiment 1-7 is provided as cathode respectively：
Embodiment 8-14.
Comparative example 1
This comparative example provides a kind of pole piece and the battery including the pole piece, compared with Example 8 compared with differing only in：Its
In the just extremely common positive plate for not increasing polypropylene, polyethylene, cathode is commonly not increase polypropylene, polyethylene, nano-silicon
Negative plate.
Comparative example 2
This comparative example provides a kind of ternary lithium ion battery, compared with Example 8 compared with differing only in, negative plate is not added with
Enter nano-silicon.
Test example 1
Using high safety ternary lithium ion battery (embodiment 8-14 is provided) provided by the invention and current ternary lithium
The ternary lithium ion battery that ion battery (comparative example 1 is provided), comparative example 2 are provided carries out contrast test.Comparing result is shown in
Table 1.
The ternary lithium ion battery comparing result that 1 embodiment 8-14 of table, comparative example 1-2 are provided
| Tested number | Pin prick test | 25 DEG C of cycle lives | 45 DEG C of storage lives |
| Embodiment 8 | Nothing is caught fire, without explosion | 1150 residual capacities 95.9% | 1000 residual capacities 89.6% |
| Embodiment 9 | Nothing is caught fire, without explosion | 1150 residual capacities 94.3% | 1000 residual capacities 88.25% |
| Embodiment 10 | Nothing is caught fire, without explosion | 1150 residual capacities 93% | 1000 residual capacities 87% |
| Embodiment 11 | Nothing is caught fire, without explosion | 1000 residual capacities 91.4% | 1000 residual capacities 86.65% |
| Embodiment 12 | Nothing is caught fire, without explosion | 1000 residual capacities 89.8% | 1000 residual capacities 85.3% |
| Embodiment 13 | Nothing is caught fire, without explosion | 1000 residual capacities 88% | 1000 residual capacities 84% |
| Embodiment 14 | Nothing is caught fire, without explosion | 1000 residual capacities 86.6% | 1000 residual capacities 82.65% |
| Comparative example 1 | Nothing catches fire, explodes | 1000 residual capacities 86.2% | 1000 residual capacities 81.5% |
| Comparative example 2 | Without catching fire, explode | 1000 residual capacities 85.6% | 1000 residual capacities 75% |
As it can be seen from table 1 the good cycle of lithium ion battery provided by the invention, the residue after recycling 1150 times
Capacity remains to reach 95.9%, is much better than current ternary lithium ion battery, also superior to the ternary lithium-ion electric for not adding nano-silicon
Pond, also, when temperature is higher, also there is very big promotion in storage life than current ternary lithium ion battery.
In terms of pin prick test, when battery instantaneous short circuit, high safety pole piece technology will make cathode due to safe practice
Using, effectively block lithium ion movable passageway, increase reacted with lithium ion, prevent analyse lithium phenomenon, inhibit internal short-circuit into
One step occurs, temperature will not continue to rise, and isolation film will not further shrink, melt, and then effective solution safety
Problem.
Although above having used general explanation, specific implementation mode and experiment, the present invention is made to retouch in detail
It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (10)
1. a kind of preparation method of high safety type ternary battery cathode sheet, which is characterized in that include the following steps：
S1：In parts by weight, by 40-45 parts of carbon negative electrode powder and 0.2-1 parts of binder, 1-5 parts of conductive agent, organic acid 2-8
45-55 parts of part and organic solvent are mixed with beating, and stable slurry is made；
S2：Nanometer grade polypropylene and/or polyethylene and nano-silicon are added into slurry obtained by S1；
The nano-silicon is 0.1%-2.5% relative to the additive amount of slurry obtained by S1；
And/or the nano-silicon is 4%-100% relative to the dosage of nanometer grade polypropylene and/or polyethylene；
S3：Slurry obtained by S2 is coated in copper foil tape, the negative plate is made in drying, roll-in and slice.
2. preparation method according to claim 1, which is characterized in that the ratio of slurry obtained by the nano-silicon and S1 is
(0.8-1.5)：(88-101)；
And/or the weight ratio of the nano level polypropylene and the nano level polyethylene is (0.5-0.8): 1.
3. preparation method according to claim 1 or 2, which is characterized in that the carbon negative electrode powder is selected from electrographite, day
One kind in right graphite, carbonaceous mesophase spherules, petroleum coke, carbon fiber, thermal decomposed resins carbon；
And/or the binder is Kynoar；
And/or the conductive agent is one or more in super carbon black, conductive carbon black, carbon fiber or carbon nanotube.
4. according to claim 1-3 any one of them preparation methods, which is characterized in that the organic acid is oxalic acid；And/or
The organic solvent is N-Methyl pyrrolidone.
5. according to claim 1-4 any one of them preparation methods, which is characterized in that the nanometer grade polypropylene, polyethylene
And nano-silicon, it is three dimensions of grain diameter in 100nm.
6. according to claim 1-5 any one of them preparation methods, which is characterized in that the nanometer grade polypropylene, polyethylene
Preparation method it is as follows：Based on high density poly propylene or polyethylene quality, organo montmorillonite after 1%-8% is activated and compatible
Agent, the carboxylic acid of 1%-8%, with high density poly propylene or polyethylene at a temperature of 150-200 DEG C melt blending, then extruded make
Grain, you can obtain nano level polypropylene or polyethylene；
Wherein, the compatilizer is cyclic acid anhydride, is selected from maleic anhydride or phthalic anhydride, and the organo montmorillonite is that acid is living
The organo montmorillonite of change.
7. according to claim 1-6 any one of them preparation methods, which is characterized in that the preparation method of the nano-silicon is：
Tetraethyl orthosilicate is added in the absolute ethyl alcohol of mixing 5min or more, ammonium hydroxide, the water-bath at 25-30 DEG C of hydrolysis temperature
4-5h is reacted, through the SiO that is centrifuged at a high speed out2Then bead is centrifuged repeatedly washing with absolute ethyl alcohol, until solution is neutrality,
It is dried to obtain SiO2Powder；
Wherein SiO in tetraethyl orthosilicate2Content is not less than 28%, and ammonium hydroxide content is 25%-28%；
Then by gained SiO2In 200-220 DEG C of molten salt system, is restored using metal Al, nano-silicon is prepared.
8. according to claim 1-7 any one of them preparation methods, which is characterized in that in S1 and S2, by weight,
40-42 parts of graphite cathode powder, 0.2-0.8 parts of Kynoar, 2-3 parts of conductive black, 2-5 parts of oxalic acid, organic solvent are
45-50 parts of N-Methyl pyrrolidone；0.8-1.5 parts of grade polypropylene of nanometer, 1-2.5 parts of nanoscale polyethylene, nano-silicon 0.8-1.5
Part；
Wherein the polyacrylic additive amount of nanoscale is less than the polyacrylic additive amount of nanoscale.
9. a kind of high safety type ternary battery cathode sheet, which is characterized in that with claim 1-8 any one of them preparation methods
It is prepared to obtain.
10. a kind of ternary battery, which is characterized in that include negative plate as claimed in claim 9；
Preferably, the positive plate of the ternary battery is nickle cobalt lithium manganate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755546A (en) * | 2019-03-08 | 2019-05-14 | 湖南宸宇富基新能源科技有限公司 | A kind of preparation method of lithium-ion-power cell silicon based composite material |
| CN110289443A (en) * | 2019-07-26 | 2019-09-27 | 珠海冠宇电池有限公司 | A kind of anti-overcharge lithium ion battery and preparation method thereof |
| CN112133887A (en) * | 2020-10-09 | 2020-12-25 | 昆山宝创新能源科技有限公司 | Quasi-solid-state battery pole piece and preparation method and application thereof |
| CN113178547A (en) * | 2021-03-10 | 2021-07-27 | 武汉力兴(火炬)电源有限公司 | Preparation method of high-safety inorganic diaphragm composite electrode and composite electrode prepared by same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709602A (en) * | 2012-05-22 | 2012-10-03 | 株洲市高远电池有限公司 | Manufacturing method of high energy-density lithium-ion secondary battery |
| CN103022423A (en) * | 2012-11-28 | 2013-04-03 | 上海锦众信息科技有限公司 | Method for preparing lithium-ion safe negative pole |
| CN105336937A (en) * | 2015-12-17 | 2016-02-17 | 中国有色桂林矿产地质研究院有限公司 | Negative electrode sizing agent for manufacturing lithium ion battery negative electrode, preparation method of negative electrode sizing agent, lithium ion battery negative electrode and battery |
| CN106848194A (en) * | 2016-12-20 | 2017-06-13 | 北京鼎能开源电池科技股份有限公司 | A kind of manufacture method of safety-type ternary battery anode slice |
-
2018
- 2018-02-28 CN CN201810168042.4A patent/CN108365177A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709602A (en) * | 2012-05-22 | 2012-10-03 | 株洲市高远电池有限公司 | Manufacturing method of high energy-density lithium-ion secondary battery |
| CN103022423A (en) * | 2012-11-28 | 2013-04-03 | 上海锦众信息科技有限公司 | Method for preparing lithium-ion safe negative pole |
| CN105336937A (en) * | 2015-12-17 | 2016-02-17 | 中国有色桂林矿产地质研究院有限公司 | Negative electrode sizing agent for manufacturing lithium ion battery negative electrode, preparation method of negative electrode sizing agent, lithium ion battery negative electrode and battery |
| CN106848194A (en) * | 2016-12-20 | 2017-06-13 | 北京鼎能开源电池科技股份有限公司 | A kind of manufacture method of safety-type ternary battery anode slice |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755546A (en) * | 2019-03-08 | 2019-05-14 | 湖南宸宇富基新能源科技有限公司 | A kind of preparation method of lithium-ion-power cell silicon based composite material |
| CN110289443A (en) * | 2019-07-26 | 2019-09-27 | 珠海冠宇电池有限公司 | A kind of anti-overcharge lithium ion battery and preparation method thereof |
| CN112133887A (en) * | 2020-10-09 | 2020-12-25 | 昆山宝创新能源科技有限公司 | Quasi-solid-state battery pole piece and preparation method and application thereof |
| CN113178547A (en) * | 2021-03-10 | 2021-07-27 | 武汉力兴(火炬)电源有限公司 | Preparation method of high-safety inorganic diaphragm composite electrode and composite electrode prepared by same |
| CN113178547B (en) * | 2021-03-10 | 2023-04-28 | 武汉力兴(火炬)电源有限公司 | Preparation method of inorganic diaphragm composite electrode and composite electrode prepared by same |
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