CN107086287A - A kind of preparation method of high multiplying power lithium ion battery - Google Patents
A kind of preparation method of high multiplying power lithium ion battery Download PDFInfo
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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
- H01M10/058—Construction or 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
- 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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- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
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- 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
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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
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Abstract
A kind of preparation method of high multiplying power lithium ion battery, the manufacture for lithium ion battery.The positive pole film-making prepared, negative pole film-making and polyalkene diaphragm are wound into battery core, battery core is pre-packaged with shell, it is vacuum dried to inject chemical conversion after electrolyte, standing, encapsulation, partial volume afterwards, that is, obtain lithium ion battery.The present invention on positive plate single, double surface surface by coating conductive carbon layer, to improve ionic conductivity and ion percent of pass, reduces polarization between battery layers, and then reduces the internal resistance of cell, improves the high rate capability of battery.One layer of anti-burr layer is coated in pole piece edge notches end face, to prevent short circuit or micro-short circuit that pole piece burrs on edges is likely to result in, self-discharge rate is reduced, improves the security performance of battery.Using the barrier film with compared with low porosity, on the premise of high rate capability is ensured, the self-discharge rate and cost of battery are reduced.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly a kind of preparation method of high multiplying power lithium ion battery.
Background technology
Because lithium ion battery has operating high voltage, high specific energy, long circulation life, low self-discharge rate, pollution-free etc. excellent
Gesture, has been widely used in the miniaturized electronics such as mobile phone, portable computer, digital product, and model plane, nobody
Its wide application prospect is shown on the vehicles such as machine, automobile starting power supply, electric automobile and hybrid vehicle and strong
The growth momentum of strength.
At present, high multiplying power lithium ion battery is received significant attention and applied.In order to which the high power for improving lithium ion battery is forthright
Can, typically realized by adjusting positive and negative electrode slice prescription and surface density, such as improve conductive agent content and reduction surface density,
Its high rate performance can be improved to a certain extent, but in this way, significantly reduces the energy density of battery.As
The appearance and application of positive plate collector utter misery aluminium foil, improve the high rate performance of lithium ion battery to a certain extent, but still
Requirement of the market electrical equipment to battery high rate performance can not so be met.Pole piece notching edge easily produces hair in process of production
Thorn, has while self-discharge of battery is big and punctures the risk that barrier film causes short circuit, to reduce this risk, it is general using ceramics every
Film, this but have impact on battery high rate performance, also increase manufacturing cost while battery safety is improved.At present
Technique in, the barrier film of high voidage 50% or so being used high-multiplying-power battery, cost is very high more.
The content of the invention
To overcome the deficiencies in the prior art, goal of the invention of the invention is to provide a kind of system of high multiplying power lithium ion battery
Preparation Method, by increasing positive plate surface conductance coating, to improve ionic conductivity and ion percent of pass, reduction battery is finally interior
Resistance；By in positive plate otch end face coated ceramic coating, to reduce battery self discharge rate, realizing the high magnification of lithium ion battery
Performance；Using the barrier film with compared with low porosity, on the premise of high rate capability is ensured, reduce battery self-discharge rate and
Cost.
For achieving the above object, preparation method of the invention is as follows：
Preparation method is as follows：
（a）Make positive plate
（a1）Positive pole dry powder and solvent are uniformly mixed, anode sizing agent is configured to, the positive pole dry powder is with solvent quality ratio for just
Pole dry powder:Solvent=1:0.8~1.7；The positive pole dry powder includes positive active material, conductive agent, binding agent, the positive pole dry powder
It is made up of following material according to mass percent：Positive active material 90% ~ 95%, conductive agent 3% ~ 6%, binding agent 2% ~ 5%；
（a2）Using coating machine, anode sizing agent is coated in carbon-coated aluminum foils, it is large stretch of through being dried to obtain positive pole；Reuse coating machine
1 ~ 5um conductive gelatin is coated on the large stretch of positive and negative surface of positive pole, positive plate coiled strip is obtained through drying, roll-in, cutting；
（a3）In positive plate coiled strip both sides, otch end face coats one layer of ceramic coating using spraying equipment, and positive pole is both obtained after drying
Piece；
（b）Make negative plate
（b1）Negative pole dry powder and solvent are uniformly mixed, cathode size is configured to, the negative pole dry powder and solvent quality ratio are negative
Pole dry powder:Solvent=1:1.2~1.7；The negative pole dry powder includes negative electrode active material, conductive agent, binding agent, the negative pole dry powder
It is made up of following material according to mass percent：Negative electrode active material 90% ~ 95%, conductive agent 0% ~ 5%, binding agent 2% ~ 5%；
（b2）Using coating machine, cathode size is coated on copper foil, negative plate is obtained through drying, roll-in, cutting；
（c）Battery makes
（c1）The positive plate, negative plate and the polyalkene diaphragm that prepare are wound into battery core；
（c2）Battery core is pre-packaged with shell, it is vacuum dried to inject chemical conversion after electrolyte, standing, sealing, partial volume afterwards, that is, obtain
Lithium ion battery.
The solvent that described anode sizing agent and cathode size is used is deionized water or 1-METHYLPYRROLIDONE.
Described positive active material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, phosphoric acid
One or more mixtures in ferrimanganic lithium；Described negative electrode active material be Delanium, native graphite, composite graphite,
One or more mixtures in silicon-carbon cathode, lithium titanate.
The conductive agent that the anode sizing agent and cathode size are used is received for conductive carbon black SP-Li, electrically conductive graphite ks6, carbon
The combined conductive agent of any one or a few composition in mitron CNTS, carbon nano-fiber VGCF, graphene.
The binding agent that the anode sizing agent and cathode size are used is Kynoar PVDF, sodium carboxymethylcellulose
One or more of mixing in CMC, butadiene-styrene latex SBR, the aqueous dispersions LA133 and LA132 of acrylonitrile multiple copolymer are glued
Tie agent.
The conductive gelatin of the large stretch of positive and negative surface coating of the positive pole is equal according to a certain percentage by conductive agent, binding agent, solvent
It is even to be mixed to prepare, the conductive agent be conductive carbon black SP-Li, electrically conductive graphite ks6, CNT CNTS, carbon nano-fiber VGCF,
The combined conductive agent of any one or a few composition in graphene；Binding agent is Kynoar PVDF, carboxymethyl cellulose
One or more of mixing in sodium CMC, butadiene-styrene latex SBR, the aqueous dispersions LA133 and LA132 of acrylonitrile multiple copolymer
Binding agent；The solvent that the conductive gelatin is used is deionized water or 1-METHYLPYRROLIDONE；The conductive agent of the conductive gelatin
Mass ratio with binding agent is conductive agent：Binding agent=19 ~ 49:1, solvent load is the 90% ~ 97% of conductive gelatin gross weight.
The ceramic coating of the positive plate coiled strip both sides otch end face by oxide ceramic material, binding agent, solvent according to
Certain proportion is uniformly mixed to prepare；The oxide ceramic material includes at least one of aluminum oxide, titanium oxide and silica；
The binding agent is Kynoar PVDF, sodium carboxymethylcellulose CMC, butadiene-styrene latex SBR, the water of acrylonitrile multiple copolymer
One or more of hybrid adhesives in dispersion liquid LA133 and LA132；The solvent that the ceramic coating is used is deionized water
Or 1-METHYLPYRROLIDONE；Oxide ceramic material, the binding agent mass ratio of the ceramic coating are respectively oxide ceramics material
Material：Binding agent=9 ~ 19:1, solvent load is the 80% ~ 95% of ceramic masking liquid gross weight.
Described polyalkene diaphragm voidage is 40% ~ 45%, and thickness is 12-40um.
The electrolyte includes the carbonic acid third that the lithium hexafluoro phosphate of 1.0 ~ 1.5 mol/Ls, mass percent are 3.0 ~ 6.0%
Alkene ester, 15 ~ 20% ethylene carbonate, 20 ~ 25% diethyl carbonate, 10 ~ 15% ethyl acetate, 0.5 ~ 1.5% carbonic acid are sub-
Vinyl acetate, 1.0 ~ 2.0% propylene sulfite, 1.0 ~ 2.0% fluorine with ethylene carbonate, 0.5 ~ 6% cyclohexyl benzene and
0.5 ~ 1.5% silicon phosphonitrile flame retardant.
The present invention compared with prior art, made lithium ion battery have excellent chemical property, high magnification and
High safety performance, with advantages below：
1st, positive pole sheet is obtained by using utter misery made with aluminum foil and coats conductive carbon layer on the large stretch of positive and negative surface of positive pole, to improve
Ionic conductivity and ion percent of pass, reduce polarization between battery layers, and then reduce the internal resistance of cell, and the high power for improving battery is forthright
Energy.
2nd, one layer of ceramic coating is coated in positive plate coiled strip both sides otch end face, pole piece burrs on edges can be prevented to be likely to result in
Short circuit or micro-short circuit, reduce battery self discharge rate, improve battery high rate performance and storage performance.
3rd, using the electrolyte containing special additive, the safety of battery can be improved while battery high rate performance is ensured
Performance.
4th, using the barrier film with compared with low porosity, on the premise of high rate capability is ensured, putting certainly for battery is reduced
Electric rate and cost.
Brief description of the drawings
Fig. 1 is the rate discharge curves of high multiplying power lithium ion battery of the present invention.
Embodiment
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The all other embodiment obtained, belongs to the scope of protection of the invention.
Embodiment 1
Mass percent is uniformly mixed into system for 92% cobalt acid lithium, 4% conductive carbon black SP-Li, 4% Kynoar PVDF
It is positive pole dry powder into positive pole dry powder, then by mass ratio：1-METHYLPYRROLIDONE=1:1.0 positive pole dry powder and N- crassitudes
Ketone is uniformly mixed, and is configured to anode sizing agent；Using coating machine, anode sizing agent is coated in carbon-coated aluminum foils, through being dried to obtain just
Very big piece；Reuse coating machine and coat 2.0um conductive gelatins on the large stretch of positive and negative surface of positive pole, through drying, roll-in, cut
To positive plate coiled strip, the conductive carbon black SP-Li and Kynoar PVDF of the conductive gelatin mass ratio are conductive carbon black SP-
Li:Kynoar PVDF=49:1, solvent load is the 90% of conductive gelatin gross weight；In positive plate coiled strip both sides otch end face
One layer of ceramic coating is coated using spraying equipment, the ceramic coating is that mass ratio is aluminum oxide AL2O3:Kynoar PVDF
=19：1 1-METHYLPYRROLIDONE mixed liquor, 1-METHYLPYRROLIDONE consumption is the 90% of ceramic masking liquid gross weight, after drying both
Obtain positive plate.Mass percent is uniform for 91% Delanium, 4% conductive carbon black SP-Li, 5% Kynoar PVDF
It is mixed and made into negative pole dry powder, then by mass ratio is negative pole dry powder:1-METHYLPYRROLIDONE=1:1.5 negative pole dry powder and N- methyl
Pyrrolidones is uniformly mixed, and is configured to cathode size；Using coating machine, cathode size is coated on copper foil, through drying, roller
Pressure, cutting obtain negative plate.It is the polyolefin that 40%, thickness is 25um by the positive plate, negative plate and the voidage that prepare
Membrane winding is into battery core.Battery core is pre-packaged with shell, it is vacuum dried after injection electrolyte, after standing through chemical conversion, sealing, point
The processes such as appearance, that is, obtain lithium ion battery；Lithium hexafluoro phosphate of the electrolyte containing 1.2 mol/Ls, mass percent are 3.0%
Propene carbonate (PC), 20% ethylene carbonate (EC), 20% diethyl carbonate (DEC), 10% ethyl acetate（EA）、
0.5% vinylene carbonate（VC）, 2.0% propylene sulfite（PS）, 2.0% fluorine band ethylene carbonate（FEC）, content
1.0% cyclohexyl benzene and the silicon phosphonitrile flame retardant of content 0.5%.
Embodiment 2
Mass percent is uniformly mixed into system for 90% LiFePO4,5% CNT CNTS, 5% Kynoar PVDF
It is positive pole dry powder into positive pole dry powder, then by mass ratio:1-METHYLPYRROLIDONE=1:1.7 positive pole dry powder and N- crassitudes
Ketone is uniformly mixed, and is configured to anode sizing agent；Using coating machine, anode sizing agent is coated in carbon-coated aluminum foils, through being dried to obtain just
Very big piece；Reuse coating machine and coat 3.0um conductive gelatins on the large stretch of positive and negative surface of positive pole, through drying, roll-in, cut
To positive plate coiled strip, the conductive carbon black SP-Li and Kynoar PVDF of the conductive gelatin mass ratio are conductive carbon black SP-
Li：Kynoar PVDF=32.3:1, solvent load is the 95% of conductive gelatin gross weight；In positive plate coiled strip both sides cut ends
Face coats one layer of ceramic coating using spraying equipment, and the ceramic coating is that mass ratio is aluminum oxide AL2O3:Kynoar
PVDF =9:1 1-METHYLPYRROLIDONE mixed liquor, 1-METHYLPYRROLIDONE consumption is the 80% of ceramic masking liquid gross weight, is dried
Positive plate is both obtained afterwards.The Delanium, 4% conductive carbon black SP-Li, 5% acrylonitrile multi-component copolymer for being 91% by mass percent
The LA132 of thing is uniformly mixed and made into negative pole dry powder, then by mass ratio is negative pole dry powder:Deionized water=1:1.5 negative pole dry powder with
Deionized water is uniformly mixed, and is configured to cathode size；Using coating machine, cathode size is coated on copper foil, through drying, roller
Pressure, cutting obtain negative plate.It is the polyolefin that 40%, thickness is 14um by the positive plate, negative plate and the voidage that prepare
Membrane winding is into battery core.Battery core is pre-packaged with shell, it is vacuum dried after injection electrolyte, after standing through chemical conversion, sealing, point
The processes such as appearance, that is, obtain lithium ion battery；Lithium hexafluoro phosphate of the electrolyte containing 1.3 mol/Ls, mass percent are 3.0%
Propene carbonate (PC), 15% ethylene carbonate (EC), 20% diethyl carbonate (DEC), 15% ethyl acetate（EA）、
0.8% vinylene carbonate（VC）, 1.2% propylene sulfite（PS）, 1.5% fluorine band ethylene carbonate（FEC）, content
2.0% cyclohexyl benzene and the silicon phosphonitrile flame retardant of content 1.5%.
Embodiment 3
Mass percent is uniformly mixed and made into positive pole and done for 95% cobalt acid lithium, 3% graphene, 2% Kynoar PVDF
Powder, then by mass ratio be cobalt acid lithium:1-METHYLPYRROLIDONE=1:1.5 cobalt acid lithium is uniformly mixed with 1-METHYLPYRROLIDONE,
It is configured to anode sizing agent；Using coating machine, anode sizing agent is coated in carbon-coated aluminum foils, it is large stretch of through being dried to obtain positive pole；Make again
5.0um conductive gelatins are coated on the large stretch of positive and negative surface of positive pole with coating machine, positive plate volume is obtained through drying, roll-in, cutting
Material, the CNT CNTS and Kynoar PVDF of the conductive gelatin mass ratio are CNT CNTS：Polyvinylidene fluoride
Alkene PVDF=49:1,1-METHYLPYRROLIDONE consumption is the 92% of conductive gelatin gross weight；In positive plate coiled strip both sides otch end face
One layer of ceramic coating is coated using spraying equipment, the ceramic coating is that mass ratio is aluminum oxide AL2O3:Kynoar PVDF
=15:1 1-METHYLPYRROLIDONE mixed liquor, 1-METHYLPYRROLIDONE consumption is the 88% of ceramic masking liquid gross weight, after drying both
Obtain positive plate.The Delanium, 4% conductive carbon black SP-Li, 3.0% sodium carboxymethylcellulose for being 93% by mass percent
CMC is uniformly mixed and made into negative pole dry powder, then by mass ratio is negative pole dry powder:Deionized water=1:1.3 negative pole dry powder and deionization
Water is uniformly mixed, and is configured to cathode size；Using coating machine, cathode size is coated on copper foil, through drying, roll-in, cutting
Obtain negative plate.It is the polyalkene diaphragm volume that 48%, thickness is 32um by the positive plate, negative plate and the voidage that prepare
It is coiled into battery core.Battery core is pre-packaged with shell, it is vacuum dried to inject afterwards after electrolyte, standing through works such as chemical conversion, sealing, partial volumes
Sequence, that is, obtain lithium ion battery；Lithium hexafluoro phosphate of the electrolyte containing 1.0 mol/Ls, the carbonic acid that mass percent is 6.0%
Propylene (PC), 18% ethylene carbonate (EC), 25% diethyl carbonate (DEC), 15% ethyl acetate（EA）, 1.0%
Vinylene carbonate（VC）, 1.5% propylene sulfite（PS）, 1.0% fluorine band ethylene carbonate（FEC）, content 3.0%
The silicon phosphonitrile flame retardant of cyclohexyl benzene and content 0.5%.
The high rate performance test of the present invention：
Method of testing：At room temperature, then battery partial volume crossed, first 0.5C constant-current discharges to 3000mv are unified to use 1C constant currents
Constant-voltage charge is to 4200mv, and it is 0.02C to control cut-off current, shelves 5min, then uses 1C, 35C, 50C, 60C, 80C electricity respectively
Constant-current discharge is flowed to 3000mv.During record electric discharge mean voltage, battery surface maximum temperature and capability retention etc., and make
Go out rate discharge curves.
Test data such as table 1 and rate discharge curves are as shown in Figure 1.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (9)
1. a kind of preparation method of high multiplying power lithium ion battery, it is characterised in that：The preparation method is as follows：
（a）Make positive plate
（a1）Positive pole dry powder and solvent are uniformly mixed, anode sizing agent is configured to, the positive pole dry powder is positive pole with solvent quality ratio
Dry powder:Solvent=1:0.8~1.7；The positive pole dry powder include positive active material, conductive agent, binding agent, the positive pole dry powder by
Following material is made according to mass percent：Positive active material 90% ~ 95%, conductive agent 3% ~ 6%, binding agent 2% ~ 5%；
（a2）Using coating machine, anode sizing agent is coated in carbon-coated aluminum foils, it is large stretch of through being dried to obtain positive pole；Reuse coating machine
1 ~ 5um conductive gelatin is coated on the large stretch of positive and negative surface of positive pole, positive plate coiled strip is obtained through drying, roll-in, cutting；
（a3）In positive plate coiled strip both sides, otch end face coats one layer of ceramic coating using spraying equipment, and positive plate is both obtained after drying；
（b）Make negative plate
（b1）Negative pole dry powder and solvent are uniformly mixed, cathode size is configured to, the negative pole dry powder is negative pole with solvent quality ratio
Dry powder:Solvent=1:1.2~1.7；The negative pole dry powder include negative electrode active material, conductive agent, binding agent, the negative pole dry powder by
Following material is made according to mass percent：Negative electrode active material 90% ~ 95%, conductive agent 0% ~ 5%, binding agent 2% ~ 5%；
（b2）Using coating machine, cathode size is coated on copper foil, negative plate is obtained through drying, roll-in, cutting；
（c）Battery makes
（c1）The positive plate, negative plate and the polyalkene diaphragm that prepare are wound into battery core；
（c2）Battery core is pre-packaged with shell, it is vacuum dried to inject chemical conversion after electrolyte, standing, sealing, partial volume afterwards, that is, obtain
Lithium ion battery.
2. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：Described positive pole
The solvent that slurry and cathode size are used is deionized water or 1-METHYLPYRROLIDONE.
3. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：Described positive pole
Active material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, one kind in lithium ferric manganese phosphate or many
The mixture planted；Described negative electrode active material is in Delanium, native graphite, composite graphite, silicon-carbon cathode, lithium titanate
One or more mixtures.
4. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：The positive pole slurry
The conductive agent that material and cathode size are used is conductive carbon black SP-Li, electrically conductive graphite ks6, CNT CNTS, carbon nano-fiber
The combined conductive agent of any one or a few composition in VGCF, graphene.
5. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：The positive pole slurry
The binding agent that material and cathode size are used is Kynoar PVDF, sodium carboxymethylcellulose CMC, butadiene-styrene latex SBR, propylene
One or more of hybrid adhesives in the aqueous dispersions LA133 and LA132 of nitrile multiple copolymer.
6. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：The positive maximum
The conductive gelatin of the positive and negative surface coating of piece is uniformly mixed to prepare according to a certain percentage by conductive agent, binding agent, solvent, described to lead
Electric agent is any one in conductive carbon black SP-Li, electrically conductive graphite ks6, CNT CNTS, carbon nano-fiber VGCF, graphene
The combined conductive agent of kind or several compositions；Binding agent is Kynoar PVDF, sodium carboxymethylcellulose CMC, butadiene-styrene latex
One or more of hybrid adhesives in SBR, the aqueous dispersions LA133 and LA132 of acrylonitrile multiple copolymer；The conduction
The solvent that glue is used is deionized water or 1-METHYLPYRROLIDONE；The conductive agent of the conductive gelatin and the mass ratio of binding agent
For conductive agent：Binding agent=19 ~ 49:1, solvent load is the 90% ~ 97% of conductive gelatin gross weight.
7. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：The positive plate
The ceramic coating of coiled strip both sides otch end face by oxide ceramic material, binding agent, solvent, uniformly make according to a certain percentage by mixing
；The oxide ceramic material includes at least one of aluminum oxide, titanium oxide and silica；The binding agent is to gather inclined fluorine
It is one or more of mixed in ethene PVDF, butadiene-styrene latex SBR, the aqueous dispersions LA133 and LA132 of acrylonitrile multiple copolymer
Close binding agent；The solvent that the ceramic coating is used is deionized water or 1-METHYLPYRROLIDONE；The oxidation of the ceramic coating
Thing ceramic material, binding agent mass ratio are respectively：Oxide ceramic material：Binding agent=9 ~ 19:1, solvent load is conductive gelatin
The 80% ~ 95% of gross weight.
8. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：Described polyene
Hydrocarbon barrier film voidage is 40% ~ 45%, and thickness is 12-40um.
9. a kind of preparation method of high multiplying power lithium ion battery according to claim 1, it is characterised in that：The electrolyte
Propene carbonate, 15 ~ 20% carbonic acid of lithium hexafluoro phosphate, mass percent including 1.0 ~ 1.5 mol/Ls for 3.0 ~ 6.0%
Vinyl acetate, 20 ~ 25% diethyl carbonate, 10 ~ 15% ethyl acetate, 0.5 ~ 1.5% vinylene carbonate, 1.0 ~ 2.0%
Propylene sulfite, 1.0 ~ 2.0% fluorine are with ethylene carbonate, 0.5 ~ 6% cyclohexyl benzene and 0.5 ~ 1.5% silicon phosphonitrile system
Fire retardant.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681117A (en) * | 2017-09-19 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | A kind of electrodes of lithium-ion batteries and its preparation technology for scribbling ceramic slurry |
| CN108321427A (en) * | 2018-01-31 | 2018-07-24 | 深圳市卓能新能源股份有限公司 | 18650 high-rate lithium ion battery and preparation method thereof |
| CN108417884A (en) * | 2018-02-09 | 2018-08-17 | 东莞市诺威新能源有限公司 | It is a kind of to dodge the preparation method and lithium ion battery for filling high-capacity lithium ion cell |
| CN108417886A (en) * | 2018-03-06 | 2018-08-17 | 深圳前海优容科技有限公司 | Battery core and its manufacturing method, battery |
| CN109103490A (en) * | 2018-08-17 | 2018-12-28 | 云南锡业集团（控股）有限责任公司研发中心 | A kind of high magnification iron phosphate polymer lithium battery |
| CN109638212A (en) * | 2018-11-20 | 2019-04-16 | 东莞锂威能源科技有限公司 | A kind of high magnification fast charge lithium ion battery |
| CN110459730A (en) * | 2019-07-29 | 2019-11-15 | 漳州华锐锂能新能源科技有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN110518249A (en) * | 2019-09-09 | 2019-11-29 | 江苏塔菲尔新能源科技股份有限公司 | A kind of battery core pole piece and obtained battery core is assembled by it |
| CN110911645A (en) * | 2019-12-10 | 2020-03-24 | 杭州威宏能源科技有限公司 | High-rate lithium battery pole piece of automobile starting power supply and manufacturing process and application thereof |
| CN111430666A (en) * | 2020-04-14 | 2020-07-17 | 江西远东电池有限公司 | High-temperature lithium ion battery and preparation method thereof |
| RU2728531C2 (en) * | 2017-12-28 | 2020-07-30 | Касенко Андрей Леонидович | Lithium-ion battery with operating range expanded into low temperature range |
| CN112382795A (en) * | 2020-11-11 | 2021-02-19 | 中盐安徽红四方锂电有限公司 | Lithium ion battery and preparation method thereof |
| CN112635812A (en) * | 2019-09-24 | 2021-04-09 | 深圳市莫提尔科技有限公司 | High-power lithium iron phosphate start-stop lithium ion battery and preparation method 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 |
| CN114267821A (en) * | 2021-12-22 | 2022-04-01 | 西安瑟福能源科技有限公司 | Positive pole piece for high-safety lithium ion battery and preparation method and application thereof |
| WO2023060554A1 (en) * | 2021-10-15 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Electrolyte, secondary battery, and power device |
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| CN105895855A (en) * | 2014-12-17 | 2016-08-24 | 中国人民解放军63971部队 | Electrode coated with conductive carbon layer on surface and preparation method of electrode |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681117A (en) * | 2017-09-19 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | A kind of electrodes of lithium-ion batteries and its preparation technology for scribbling ceramic slurry |
| RU2728531C2 (en) * | 2017-12-28 | 2020-07-30 | Касенко Андрей Леонидович | Lithium-ion battery with operating range expanded into low temperature range |
| CN108321427A (en) * | 2018-01-31 | 2018-07-24 | 深圳市卓能新能源股份有限公司 | 18650 high-rate lithium ion battery and preparation method thereof |
| CN108417884A (en) * | 2018-02-09 | 2018-08-17 | 东莞市诺威新能源有限公司 | It is a kind of to dodge the preparation method and lithium ion battery for filling high-capacity lithium ion cell |
| CN108417886A (en) * | 2018-03-06 | 2018-08-17 | 深圳前海优容科技有限公司 | Battery core and its manufacturing method, battery |
| CN109103490A (en) * | 2018-08-17 | 2018-12-28 | 云南锡业集团（控股）有限责任公司研发中心 | A kind of high magnification iron phosphate polymer lithium battery |
| CN109638212A (en) * | 2018-11-20 | 2019-04-16 | 东莞锂威能源科技有限公司 | A kind of high magnification fast charge lithium ion battery |
| CN110459730A (en) * | 2019-07-29 | 2019-11-15 | 漳州华锐锂能新能源科技有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN110459730B (en) * | 2019-07-29 | 2023-11-10 | 漳州华富新能源科技有限公司 | Lithium ion battery and manufacturing method thereof |
| CN110518249A (en) * | 2019-09-09 | 2019-11-29 | 江苏塔菲尔新能源科技股份有限公司 | A kind of battery core pole piece and obtained battery core is assembled by it |
| CN112635812A (en) * | 2019-09-24 | 2021-04-09 | 深圳市莫提尔科技有限公司 | High-power lithium iron phosphate start-stop lithium ion battery and preparation method thereof |
| CN110911645A (en) * | 2019-12-10 | 2020-03-24 | 杭州威宏能源科技有限公司 | High-rate lithium battery pole piece of automobile starting power supply and manufacturing process and application thereof |
| CN111430666A (en) * | 2020-04-14 | 2020-07-17 | 江西远东电池有限公司 | High-temperature lithium ion battery and preparation method thereof |
| CN112382795A (en) * | 2020-11-11 | 2021-02-19 | 中盐安徽红四方锂电有限公司 | Lithium ion battery and preparation method 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 |
| WO2023060554A1 (en) * | 2021-10-15 | 2023-04-20 | 宁德时代新能源科技股份有限公司 | Electrolyte, secondary battery, and power device |
| CN114267821A (en) * | 2021-12-22 | 2022-04-01 | 西安瑟福能源科技有限公司 | Positive pole piece for high-safety lithium ion battery and preparation method and application thereof |
| CN114267821B (en) * | 2021-12-22 | 2024-05-24 | 西安瑟福能源科技有限公司 | Positive electrode plate for high-safety lithium ion battery, and preparation method and application thereof |
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