CN106099172B - A kind of aseptate lithium ion battery - Google Patents
A kind of aseptate lithium ion battery Download PDFInfo
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- CN106099172B CN106099172B CN201610570327.1A CN201610570327A CN106099172B CN 106099172 B CN106099172 B CN 106099172B CN 201610570327 A CN201610570327 A CN 201610570327A CN 106099172 B CN106099172 B CN 106099172B
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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
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- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
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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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
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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
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/04—Alginic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention relates to field of lithium ion battery, disclose a kind of aseptate lithium ion battery, including anode, cathode, the anode, cathode cross laminates；The surface of positive or negative pole is equipped with plural gel cured film, and the plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A includes 4 10 parts by weight vinylidene hexafluoropropylene copolymers, 10 20 parts by weight of silica, 68 parts by weight galapectite pipes, 35 parts by weight sodium alginates, 40 60 parts by weight of ethanol, 80 100 parts by weight water；The B component includes 13 parts by weight calcium chloride, 40 60 parts by weight water.The lithium ion battery of the present invention is not provided with diaphragm, the space availability ratio inside lithium ion battery cell greatly improved, to improve the volume energy density of lithium ion battery.
Description
Technical field
The present invention relates to field of lithium ion battery more particularly to a kind of aseptate lithium ion batteries.
Background technology
The structure of current lithium ion battery includes mainly positive plate, negative plate, in the positive plate of arbitrary neighborhood and negative
It is spaced apart by diaphragm between pole piece.Important component of the diaphragm as current lithium ion battery, diaphragm, which is one kind, to be had
The polymer-function material of nano micropore structure, main function are to separate battery plus-negative plate, Electolyte-absorptive, only allow
Lithium ion by, do not allow electronics to pass through.
Such as application No. is the Chinese patents of CN201520888975.2 to disclose a kind of high capacity low cost mangaic acid lithium ion
Battery battery core, including planar unit mangaic acid lithium ion battery cell that three pieces of height are identical, of same size, three pieces of monomers
Mangaic acid lithium ion battery cell is stacked, every piece of monomer mangaic acid lithium ion battery cell by diaphragm, positive plate and its
Anode ear, negative plate and its negative electrode lug are constituted, and the diaphragm is between positive plate and negative plate, the positive plate, negative plate
And diaphragm is successively wound to same direction, the anode ear is in electrical contact with positive plate, and the negative electrode lug is in electrical contact with negative plate；This
Utility model is compact-sized, easy to make, reduces the risk of cost and short circuit, improves safety, is conducive to produce Gao Rong
The mangaic acid lithium ion battery of amount, high current.
But the present inventor has found in carrying out research process, there are following defects for the lithium ion battery of the prior art：
Due to the limitation of manufacturing process, diaphragm occupies the more body of lithium ion battery as smaller part is contributed battery capacity
Product causes the volume energy density of lithium ion battery limited.
Invention content
In order to solve the above technical problem, the present invention provides a kind of aseptate lithium ion batteries.The present invention lithium from
Sub- battery is not provided with diaphragm, and the space availability ratio inside lithium ion battery cell greatly improved, to improve lithium ion battery
Volume energy density.
The specific technical solution of the present invention is：A kind of aseptate lithium ion battery, including anode, cathode, the anode,
Cathode cross laminates.At least one of surface is equipped with plural gel cured film in the anode and cathode, and the plural gel is solid
Change film to be formed by slurry curing；The slurry includes component A and B component；The component A includes 4-10 parts by weight vinylidene-
Hexafluoropropylene copolymer, 10-20 parts by weight of silica, 6-8 parts by weight galapectites pipe, 3-5 parts by weight sodium alginate, 40-60
Parts by weight of ethanol, 80-100 parts by weight water；The B component includes 1-3 parts by weight calcium chloride, 40-60 parts by weight water.
The present invention is not provided with diaphragm, replaces diaphragm with the plural gel cured film coated on pole piece, substantially increases
The volume utilization of battery core, to improve the volume energy density of lithium ion battery.Form the slurry of the plural gel cured film
In, as inorganic material, having had insulating properties and heat resistance, battery core good will not send out at high temperature for silica and galapectite pipe
The case where raw plural gel cured film is shunk or is melted.And galapectite pipe is a kind of hollow tubular structure, has porosity,
There is good wellability to electrolyte, internal resistance can be reduced, improve battery performance.Sodium alginate generates solid after being reacted with calcium chloride
Body gel can adsorb a large amount of electrolyte, further decrease internal resistance.
Through the above technical solutions, realize lithium ion battery without diaphragm, battery preparation technique is simple, reduces electricity
Pond cost, simultaneously because coating diaphragm combined with pole piece it is closer, be conducive to raising battery security performance and electrochemistry
Can, relatively it is suitble to electric vehicle or hybrid vehicle to use, these advantageous effects are to lithium ion battery on electric vehicle
Using playing good facilitation.
Preferably, the thickness in monolayer of the plural gel cured film is 10-30 microns.
Preferably, the plural gel cured film is set to negative terminal surface.
Preferably, the cathode includes negative current collector, the porous polyamides Asia coated on the negative current collector surface
Amine negative electrode layer, the plural gel cured film coated on the porous polyimide cathode layer surface.
Preferably, the porous polyimide negative electrode layer is cured by polyimides negative electrode slurry；It is described porous poly-
The thickness of acid imide negative electrode layer is 50-200 microns；The polyimides negative electrode slurry include 70-83 parts by weight polyimides,
15-20 parts by weight conductive agent, 2-10 parts by weight binder, 1-3 parts by weight pore-foaming agent, 40-80 weight parts organic solvents；It is wherein poly-
The summation of acid imide, conductive agent and binder is 100 parts by weight.
Polyimides is a kind of special engineering plastics, with high temperature resistant（400 DEG C or more）, corrosion-resistant, good mechanical property,
Simple advantage is synthesized, contains a large amount of carboxyl groups in strand, since acyl group has multiple oxidation state, in certain condition
Under, redox reaction can occur with metal ion such as lithium ion, sodium ion, thus polyimides can be used as lithium-ion electric
The negative material in pond.The present invention is anode with conventional lithium ion battery positive electrode, using high molecular weight polyimides as cathode
Material occurs electrochemical oxidation-reduction reaction by the acyl group in polyimide molecule and completes energy transfer.Use polyimides
As negative material, there is no the losses to capacity in graphite type material initial charge SEI film forming procedures, are also not present SEI's
It constantly repairs and solvent molecule is inserted into and leads to battery capacity attenuation problem altogether.In the present invention, porous polyimide negative electrode layer
For cellular, hole Electolyte-absorptive can be relied on to be hindered to further decrease negative electrode lithium ion conduction.
Also, in the present invention, porous polyimide negative electrode layer is matched with plural gel cured film, is had with additional
Beneficial effect：Since cathode porous polyimide negative electrode layer is the bonding in high molecular material, with the slurry of plural gel cured film
Dosage form is at stronger binding force, thus plural gel cured film can be closely bonded on porous polyimide negative electrode layer, no
Can occur slurry being coated in occur on traditional cathode the problems such as falling off or lose powder.Just because of plural gel cured film with it is more
Hole polyimides negative electrode layer can be closely bonded so that the contact interface between plural gel cured film and cathode more steps up
Close, the advantageous interface impedance for reducing lithium ion conduction improves battery rate charge-discharge performance.And porous polyimide negative electrode layer
It is not easy to break when cathode being crimped or bent in cell fabrication processes with better toughness due to being plastic material, it is attached
The plural gel cured film on cathode is not easy to fall off.
Preferably, the porosity of the porous polyimide negative electrode layer is 5-20%, aperture is 5-50 microns.
Preferably, the molecular weight of the polyimides is 300000-1500000.
Preferably, the organic solvent is NMP or DMAC；The conductive agent is conductive carbon black, conductive fiber, carbon nanometer
Pipe, graphene；The binder is SBR, PVDF；The pore-foaming agent is selected from PEG1000, PEG4000 or ammonium hydrogen carbonate.
Preferably, the negative current collector is the copper foil coated with conductive coating.
Conductive coating is pre-coated on copper foil, conductive priming coat can improve viscous between polyimides and copper foil current collector
Tie effect, and the disadvantage for further overcoming polyimides electric conductivity bad.
A kind of electric vehicle contains above-mentioned aseptate lithium ion battery.
It is compared with the prior art, the beneficial effects of the invention are as follows：The lithium ion battery of the present invention is not provided with diaphragm, substantially carries
Space availability ratio inside high lithium ion battery cell, to improve the volume energy density of lithium ion battery.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is a kind of structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is a kind of structural schematic diagram of the embodiment of the present invention 4；
Fig. 4 is a kind of structural schematic diagram of the embodiment of the present invention 5.
Reference numeral is：Negative current collector 1, porous polyimide negative electrode layer 2, plural gel cured film 3, plus plate current-collecting body
4, positive electrode material layer 5, conductive coating 6, negative electrode material layer 7.
Specific implementation mode
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of aseptate lithium ion battery, including anode, cathode, are not provided with diaphragm, and the anode, cathode are staggeredly folded
Layer.As shown in Figure 1, the cathode includes that negative current collector 1, porous polyimide coated on the negative current collector surface are negative
Pole layer 2, the plural gel cured film 3 coated on the porous polyimide cathode layer surface.Anode include plus plate current-collecting body 4,
Positive electrode material layer 5 coated on plus plate current-collecting body surface.Negative current collector is copper foil.
The thickness of the porous polyimide negative electrode layer is 125 microns, porosity 15%, and aperture is 5-50 microns.It is described
The thickness in monolayer of plural gel cured film is 20 microns.
The porous polyimide negative electrode layer is cured by polyimides negative electrode slurry；The polyimides negative electrode slurry
It is 350000 or so polyimides, 18 parts by weight conductive carbon blacks, 6 parts by weight SBR, 2 parts by weight including 76 parts by weight molecular weight
PEG1000,60 parts by weight NMP.
The plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A packet
Include 7 parts by weight vinylidene fluoride-hexafluoropropylene copolymers, 15 parts by weight of silica, 7 parts by weight galapectite pipes, 4 parts by weight seaweed
Sour sodium, 50 parts by weight of ethanol, 90 parts by weight water；The B component includes 2 parts by weight calcium chloride, 50 parts by weight water.Above-mentioned slurry
Painting method is, component A is first coated on to the surface of porous polyimide negative electrode layer, is then added dropwise B component, after cross-linking reaction at
Type, after drying, solidification.
The plus plate current-collecting body is aluminium foil, and positive electrode is LiFePO4；The conductive agent of anode is conductive carbon black；Anode
Binder is PVDF；The electrolyte is with the LiPF of a concentration of 1.1mol/L6For solute, with EC:EMC:DMC=1:1:1 is molten
Agent.
Embodiment 2
A kind of aseptate lithium ion battery, including anode, cathode, are not provided with diaphragm, and the anode, cathode are staggeredly folded
Layer.
As shown in Fig. 2, the cathode includes negative current collector 1, the porous polyamides coated on the negative current collector surface
Imines negative electrode layer 2, the plural gel cured film 3 coated on the porous polyimide cathode layer surface.Anode includes anode collection
Fluid 4, the positive electrode material layer 5 coated on plus plate current-collecting body surface.The negative current collector is the copper coated with conductive coating 6
Foil.
The thickness of the porous polyimide negative electrode layer is 50 microns, porosity 20%, and aperture is 5-50 microns.It is described
The thickness in monolayer of plural gel cured film is 10 microns.
The porous polyimide negative electrode layer is cured by polyimides negative electrode slurry；The polyimides negative electrode slurry
It is 900000 or so polyimides, 20 parts by weight conductive fibers, 10 parts by weight PVDF, 1 weight including 70 parts by weight molecular weight
Part PEG4000,40 parts by weight DMAC.
The plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A packet
Include 4 parts by weight vinylidene fluoride-hexafluoropropylene copolymers, 10 parts by weight of silica, 6 parts by weight galapectite pipes, 3 parts by weight seaweed
Sour sodium, 40 parts by weight of ethanol, 80 parts by weight water；The B component includes 1 parts by weight calcium chloride, 40 parts by weight water.
The plus plate current-collecting body is aluminium foil, and positive electrode is cobalt acid lithium；The conductive agent of anode is conductive carbon black；Anode glues
Knot agent is PVDF；The electrolyte is with the LiPF of a concentration of 1.1mol/L6For solute, using EC as solvent.
Embodiment 3
A kind of aseptate lithium ion battery, including anode, cathode, are not provided with diaphragm, and the anode, cathode are staggeredly folded
Layer.
The cathode include negative current collector, the porous polyimide negative electrode layer coated on the negative current collector surface,
Plural gel cured film coated on the porous polyimide cathode layer surface.The thickness of the porous polyimide negative electrode layer
It it is 200 microns, porosity 5%, aperture is 5-50 microns.The thickness in monolayer of the plural gel cured film is 30 microns.It is described
Negative current collector is the copper foil coated with conductive coating 6.
The porous polyimide negative electrode layer is cured by polyimides negative electrode slurry；The polyimides negative electrode slurry
It is 1500000 or so polyimides, 15 parts by weight of carbon nanotubes, 2 parts by weight SBR, 3 parts by weight including 83 parts by weight molecular weight
Ammonium hydrogen carbonate, 80 parts by weight DMAC.
The plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A packet
Include 10 parts by weight vinylidene fluoride-hexafluoropropylene copolymers, 20 parts by weight of silica, 8 parts by weight galapectite pipes, 5 parts by weight sea
Mosanom, 60 parts by weight of ethanol, 100 parts by weight water；The B component includes 3 parts by weight calcium chloride, 60 parts by weight water.
Plus plate current-collecting body is aluminium foil, and positive electrode is LiMn2O4；The conductive agent of anode is conductive fiber；The binder of anode
For polyacrylic binder；The electrolyte is with the LiPF of a concentration of 1.0mol/L6For solute, using PC as solvent.
Embodiment 4
A kind of aseptate lithium ion battery, including anode, cathode, are not provided with diaphragm, and the anode, cathode are staggeredly folded
Layer.
As shown in figure 3, the cathode includes negative current collector 1, negative electrode material layer 7；Anode includes plus plate current-collecting body 4, applies
It is overlying on the positive electrode material layer 5 on plus plate current-collecting body surface, the surface of positive electrode material layer is equipped with plural gel cured film 3, described compound
The thickness in monolayer of gel solidification film is 15 microns.
The plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A packet
Include 8 parts by weight vinylidene fluoride-hexafluoropropylene copolymers, 16 parts by weight of silica, 7 parts by weight galapectite pipes, 4 parts by weight seaweed
Sour sodium, 45 parts by weight of ethanol, 95 parts by weight water；The B component includes 2 parts by weight calcium chloride, 45 parts by weight water.
Plus plate current-collecting body is aluminium foil, and negative current collector is copper foil.Positive electrode is LiMn2O4；The conductive agent of anode is conduction
Fiber；The binder of anode is polyacrylic binder；The electrolyte is with the LiPF of a concentration of 1.0mol/L6For solute,
Using PC as solvent.
Embodiment 5
A kind of aseptate lithium ion battery, including anode, cathode, are not provided with diaphragm, and the anode, cathode are staggeredly folded
Layer.
As shown in figure 4, the cathode includes negative current collector 1, coated on the negative electrode material layer 7 on negative current collector, if
In the plural gel cured film 3 on negative electrode material layer.Anode include plus plate current-collecting body 4, coated on plus plate current-collecting body surface just
The surface of pole material layer 5, positive electrode material layer is equipped with plural gel cured film 3, and the thickness in monolayer of the plural gel cured film is
10-30 microns.
The plural gel cured film is formed by slurry curing；The slurry includes component A and B component；The component A packet
Include 9 parts by weight vinylidene fluoride-hexafluoropropylene copolymers, 18 parts by weight of silica, 6 parts by weight galapectite pipes, 5 parts by weight seaweed
Sour sodium, 55 parts by weight of ethanol, 95 parts by weight water；The B component includes 3 parts by weight calcium chloride, 40-60 parts by weight water.
Plus plate current-collecting body is aluminium foil, and negative current collector is copper foil.Positive electrode is LiMn2O4；The conductive agent of anode is conduction
Fiber；The binder of anode is polyacrylic binder；The electrolyte is with the LiPF of a concentration of 1.0mol/L6For solute,
Using PC as solvent.
Embodiment 6
A kind of electric vehicle, the aseptate lithium ion battery containing embodiment 1.
Raw materials used in the present invention, equipment is unless otherwise noted the common raw material, equipment of this field；In the present invention
Method therefor is unless otherwise noted the conventional method of this field.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit still falls within the technology of the present invention side to any simple modification, change and equivalent transformation made by above example
The protection domain of case.
Claims (10)
1. a kind of aseptate lithium ion battery, including anode, cathode, it is characterised in that：The anode, cathode cross laminates；
Anode and cathode at least one of surface be equipped with plural gel cured film, the plural gel cured film by slurry curing and
At；The slurry includes component A and B component；The component A include 4-10 parts by weight vinylidene fluoride-hexafluoropropylene copolymer,
10-20 parts by weight of silica, 6-8 parts by weight galapectites pipe, 3-5 parts by weight sodium alginate, 40-60 parts by weight of ethanol, 80-
100 parts by weight water；The B component includes 1-3 parts by weight calcium chloride, 40-60 parts by weight water.
2. a kind of aseptate lithium ion battery as described in claim 1, which is characterized in that the plural gel cured film
Thickness in monolayer is 10-30 microns.
3. a kind of aseptate lithium ion battery as described in claim 1, which is characterized in that the plural gel cured film is set
In negative terminal surface.
4. a kind of aseptate lithium ion battery as claimed in claim 3, which is characterized in that the cathode includes negative pole currect collecting
Body, is coated on the porous polyimide negative electrode layer at the porous polyimide negative electrode layer coated on the negative current collector surface
The plural gel cured film on surface.
5. a kind of aseptate lithium ion battery as claimed in claim 4, which is characterized in that the porous polyimide cathode
Layer is cured by polyimides negative electrode slurry；The thickness of the porous polyimide negative electrode layer is 50-200 microns；It is described poly-
Acid imide negative electrode slurry includes 70-83 parts by weight polyimides, 15-20 parts by weight conductive agent, 2-10 parts by weight binder, 1-3
Parts by weight pore-foaming agent, 40-80 weight parts organic solvents；Wherein the summation of polyimides, conductive agent and binder is 100 weight
Part.
6. a kind of aseptate lithium ion battery as claimed in claim 4, which is characterized in that the porous polyimide cathode
The porosity of layer is 5-20%, and aperture is 5-50 microns.
7. a kind of aseptate lithium ion battery as claimed in claim 5, which is characterized in that the molecular weight of the polyimides
For 300000-1500000.
8. a kind of aseptate lithium ion battery as claimed in claim 5, which is characterized in that the organic solvent be NMP or
DMAC；The conductive agent is conductive carbon black, conductive fiber, carbon nanotube, graphene；The binder is SBR, PVDF；It is described
Pore-foaming agent is selected from PEG1000, PEG4000 or ammonium hydrogen carbonate.
9. a kind of aseptate lithium ion battery as claimed in claim 4, which is characterized in that the negative current collector is coating
There is the copper foil of conductive coating.
10. a kind of electric vehicle, which is characterized in that contain the aseptate lithium ion battery as described in one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570327.1A CN106099172B (en) | 2016-07-19 | 2016-07-19 | A kind of aseptate lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570327.1A CN106099172B (en) | 2016-07-19 | 2016-07-19 | A kind of aseptate lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN106099172A CN106099172A (en) | 2016-11-09 |
| CN106099172B true CN106099172B (en) | 2018-09-11 |
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| CN201610570327.1A Active CN106099172B (en) | 2016-07-19 | 2016-07-19 | A kind of aseptate lithium ion battery |
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| CN109346656B (en) * | 2018-10-12 | 2021-11-05 | 深圳中科瑞能实业有限公司 | Application of organic coating, pole piece for lithium ion battery and application thereof, lithium ion battery and application thereof |
| CN115149211B (en) * | 2022-08-09 | 2023-07-14 | 四川大学 | Double-layer composite diaphragm, preparation method thereof and HNTs@PI-PP double-layer composite diaphragm |
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| JP2003317695A (en) * | 2002-04-26 | 2003-11-07 | Nitto Denko Corp | Nonaqueous electrolyte lithium ion cell and separator there for |
| CN102055014A (en) * | 2010-07-22 | 2011-05-11 | 中信国安盟固利动力科技有限公司 | Lithium ion battery without diaphragm |
| CN104916811A (en) * | 2015-04-24 | 2015-09-16 | 深圳市格瑞普电池有限公司 | Non-diaphragm lithium ion battery and pole piece thereof |
| CN104916455A (en) * | 2014-03-12 | 2015-09-16 | 中国科学院大连化学物理研究所 | Colloidal electrolyte super capacitor adopting reticular diaphragm |
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| KR101040482B1 (en) * | 2008-03-04 | 2011-06-09 | 주식회사 엘지화학 | A separator having porous coating layer and electrochemical device containing the same |
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| JP2003317695A (en) * | 2002-04-26 | 2003-11-07 | Nitto Denko Corp | Nonaqueous electrolyte lithium ion cell and separator there for |
| CN102055014A (en) * | 2010-07-22 | 2011-05-11 | 中信国安盟固利动力科技有限公司 | Lithium ion battery without diaphragm |
| CN104916455A (en) * | 2014-03-12 | 2015-09-16 | 中国科学院大连化学物理研究所 | Colloidal electrolyte super capacitor adopting reticular diaphragm |
| CN104916811A (en) * | 2015-04-24 | 2015-09-16 | 深圳市格瑞普电池有限公司 | Non-diaphragm lithium ion battery and pole piece thereof |
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