CN105895921B - A kind of preparation method of the collector of lithium ion battery - Google Patents
A kind of preparation method of the collector of lithium ion battery Download PDFInfo
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- CN105895921B CN105895921B CN201610309467.3A CN201610309467A CN105895921B CN 105895921 B CN105895921 B CN 105895921B CN 201610309467 A CN201610309467 A CN 201610309467A CN 105895921 B CN105895921 B CN 105895921B
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 32
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 30
- 239000002131 composite material Substances 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 238000007639 printing Methods 0.000 claims abstract description 17
- 239000005030 aluminium foil Substances 0.000 claims abstract description 13
- 239000002322 conducting polymer Substances 0.000 claims abstract description 11
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 239000007767 bonding agent Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 19
- 239000002244 precipitate Substances 0.000 claims description 14
- 239000000178 monomer Substances 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 229920000128 polypyrrole Polymers 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 239000012266 salt solution Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229920000767 polyaniline Polymers 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229920000123 polythiophene Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 238000010189 synthetic method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000037427 ion transport Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 9
- 239000003575 carbonaceous material Substances 0.000 description 7
- 238000001291 vacuum drying Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 description 4
- 229910020881 PMo12O40 Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910020628 SiW12O40 Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920006389 polyphenyl polymer Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003233 pyrroles Chemical group 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- 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
- H01M4/64—Carriers or collectors
-
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/666—Composites in the form of mixed materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of preparation methods of the collector of lithium ion battery, it is included in the composite material of conducting polymer-polyoxometallic acid lithium salts and bonding agent is added, compound is printed as collector, collector printing compound is stirred for slurry in a solvent, the slurry is printed on aluminium foil through intaglio press, plus plate current-collecting body is made, the present invention is in charge and discharge process, lithium ion can also conduct while transmission in conducting polymer in the three-dimensional framework of polyoxometallic acid lithium salts, improve lithium ion transport properties, the transmission characteristic of electronics is improved further through conducting polymer, meet double requirements of the composite material to lithium ion transport and electron-transport.
Description
Technical field
The present invention relates to technical field of lithium ion more particularly to a kind of preparation sides of the collector of lithium ion battery
Method.
Background technology
With the wretched insufficiency of Global Oil resource, problem of environmental pollution increasingly aggravates, to the need of extensive clean energy resource
Ask increasing, but solar energy, the clean energy resourcies such as wind energy are unevenly distributed in the time, spatially, it is necessary to utilize extensive energy storage
System ensures the stability of power grid and the continuity of supply of electric power.Lithium battery is deposited as a kind of effective energy conversion and energy
Equipment is stored up, is attracted attention again always since the invention, operating voltage is high, energy density is big, higher than energy, specific power is big, puts
The features such as level is steady, memory-less effect is widely used in various electronic products.Although lithium battery achieves very big in 3C Product
Success, but it is applied in power and energy storage field is still at an early stage, and the key factor for restricting its development is composite material, mesh
Before to be mainly used in power and the positive electrode of energy storage field be LiFePO4, LiFePO4 has heat compared to other positive electrodes
The advantage of stability and safety, but since its internal crystal framework limits, electric conductivity is poor, cannot be satisfied the need of high current charge-discharge
It asks.Mainstream technology currently on the market is by one layer of traditional carbon material of intaglio printing on aluminium foil, for making up LiFePO4
The gravure process of the deficiency of self-conductive, traditional carbon material can have its electric conductivity a degree of promotion, but tradition
Carbon material affluxion body in lithium ion batteries gravure process, can only be directed to electron-transport requirement be promoted.
China Patent No. discloses a kind of preparation method of lithium ion battery for 201510116174.9 in 2015.8.5, first
Gravure application is first used to coat one layer of composite Nano conduction liquid on netted copper foil/aluminum foil current collector surface, after dry
Anode and cathode slurry is coated on its surface again, uses cold-hot pressure rolling techniques to carry out roll-in to pole piece later, uses laser again later
Microtomy cuts its pole piece, and finally prepares lithium ion battery.Method and lithium battery used by above-mentioned patent
The mainstream gravure process on boundary is similar, is to apply one layer of conductive materials on a current collector, to improve conductivity, such method
The deficiency of positive electrode active material self-conductive can be used for making up, have a degree of promotion to its electric conductivity, but can only improve
The transmission speed of electronics can not improve the transmission speed of lithium battery interior lithium ion, to reducing the internal resistance of cell and having polarized
It acts on limited.
Invention content
In order to overcome the defect of the above-mentioned prior art, the present invention provides a kind of preparations of the collector of lithium ion battery
Method, plus plate current-collecting body prepared by this method, may be used also while lithium ion transmits in conducting polymer in charge and discharge process
To be conducted in the three-dimensional framework of polyoxometallic acid lithium salts, lithium ion transport properties are improved, are improved further through conducting polymer
The transmission characteristic of electronics, meets double requirements of the composite material to lithium ion transport and electron-transport.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of preparation method of the collector of lithium ion battery, it is characterised in that：In conducting polymer-multi-metal oxygen
Bonding agent is added in the composite material of sour lithium salts, becomes collector printing compound, the collector is printed into compound molten
It is stirred for slurry in agent, the slurry is printed on aluminium foil through intaglio press, plus plate current-collecting body is made.
The synthetic method of the slurry is：
(1) in molar ratio 1：4 ratio point takes polyoxometallic acid lithium salts and aniline monomer, by polyoxometallic acid lithium salts with lead
Electric polymer is configured to aqueous solution；
(2) polyoxometallic acid lithium salt solution is added dropwise in conducting polymer monomer solution, reacts 1-24 at room temperature
Hour, then using distilled water and alcohol, washing precipitate puts the precipitate in 40-200 DEG C until filtrate is colourless repeatedly
It is 2-10 hours dry in vacuum drying chamber, obtain composite material；
(3) composite material and bonding agent are pressed 19：1 mass ratio is mixed into collector printing compound, and collector is printed
Brush compound was stirred into the collector through 10-12 hours in solvent N-methyl pyrilidone and prints compound.
The conducting polymer is the mixture of one or more of polyaniline, polypyrrole, polythiophene.
The polyoxometallic acid lithium salts includes Li3XY12O40, Li4XY12O40One or more of mixture；X
Refer to any one in two kinds of elements of P, Si；Y refers to any one in two kinds of elements of Mo, W.
The thickness of the aluminium foil is 12 microns.
The bonding agent is Kynoar or polytetrafluoroethylene (PTFE).
The present invention has the following advantages：
1, bonding agent is added in the composite material of conducting polymer-polyoxometallic acid lithium salts in the present invention, becomes collector
Compound is printed, collector printing compound is stirred for slurry in a solvent, through intaglio press by the slurry
Material is printed on aluminium foil, and plus plate current-collecting body is made.The gravure process of the affluxion body in lithium ion batteries of traditional carbon material, only
It can be promoted for the requirement of electron-transport.The intaglio printing material that this patent is stated, in charge and discharge process, lithium ion
It can also be conducted in the three-dimensional framework of polyoxometallic acid lithium salts while transmission in conducting polymer, improve lithium ion biography
Defeated characteristic improves the transmission characteristic of electronics further through conducting polymer, meets composite material to lithium ion transport and electronics
The double requirements of transmission.
2, the present invention can make polyoxometallic acid lithium salts and aniline reaction fully complete using the ratio, and make the two uniformly
Distribution can ensure that the reaction of polyoxometallic acid lithium salts is abundant using the method being added dropwise, it is small will to be set as 1-24 in the reaction time
When ensures the two, and the reaction was complete, and 40-200 DEG C of vacuum drying temperature ensures that the moisture in composite material fully removes.
3, conducting polymer of the invention be one or more of polyaniline, polypyrrole, polythiophene mixture this
Three kinds of polymer monomers are common conducting polymer monomer, at low cost, resource foot.
4, polyoxometallic acid lithium salts of the invention includes Li3XY12O40, Li4XY12O40One or more of mixing
Object；X refers to any one in two kinds of elements of P, Si；Y refers to any one in two kinds of elements of Mo, W, and polyoxometallate series structure is most
Stablize, resource foot, production cost is low.
Specific implementation mode
Embodiment 1
By 1：4 molar ratio point takes Li3PMo12O40Polyoxometallic acid lithium salts and polyphenyl amine monomers, do not prepare multi-metal oxygen
Sour lithium salt solution and polyaniline solutions, the polyoxometallic acid lithium salts Li that will be prepared3PMo12O40Polyaniline is slowly added dropwise in solution
In solution, reacts at room temperature 1-24 hours, then use distilled water and alcohol washing precipitate repeatedly, be until filtrate is colourless
Only, drying 2-10 hours in 40-200 DEG C of vacuum drying chamber are put the precipitate in, composite material is obtained.
Composite material is pressed again：Kynoar（PVDF）=19：1 admittedly containing mass ratio be mixed into collector printing it is compound
Collector is printed compound in solvent N-methyl pyrilidone by object（NMP）It is middle to be stirred into slurry through 10-12 hours, after
Slurry is printed on the aluminium foil of thickness 12um through intaglio press, after dry, as plus plate current-collecting body.
Plus plate current-collecting body is prepared for battery, and battery used in being tested is：
Positive electrode forms：LiFePO4 content 91%, conductive carbon black content 5%, binder PVDF 4%.By positive material
Material forms anode sizing agent according to the above ratio in nmp solution after uniform stirring 10-12 hours, with coating machine coated in previously system
On the plus plate current-collecting body got ready, through drying, pole piece thickness 139um after cold pressing.
Negative material forms：Active material content of graphite 93%, conductive carbon black content 3%, binder PVDF4%.It will bear
Pole material forms negative electrode slurry, is coated in coating machine according to the above ratio in nmp solution after uniform stirring 10-12 hours
In 15um thickness copper foil current collectors, through drying, pole piece thickness 100um after cold pressing.
Diaphragm is PP/PE/PP three-layer membranes, battery design capacity 20Ah.
Detection method：
By prepared battery full charge, the internal resistance of battery is detected with AC internal Resistance tester.
Embodiment 2
By 1：3 molar ratio point takes phosphotungstic acid lithium Li3PW12O40Polyoxometallic acid lithium salts and polypyrrole monomer, are not prepared
Polyoxometallic acid lithium salt solution and polypyrrole solution, the polyoxometallic acid lithium salts Li that will be prepared3PW12O40Solution is slowly added dropwise
In polypyrrole solution, react 6-8 hour at room temperature, then with distilled water and alcohol washing precipitate repeatedly, until filtrate without
Until color, drying 6 hours in 80 DEG C of vacuum drying chambers are put the precipitate in, composite material is obtained.
Composite material is pressed again：Polytetrafluoroethylene (PTFE)=19：1 admittedly containing mass ratio be mixed into collector print compound, will collect
Fluid prints compound in solvent N-methyl pyrilidone（NMP）It is middle to be stirred into slurry through 11 hours, by intaglio printing
Slurry is printed on the aluminium foil of thickness 12um by machine, after dry, as plus plate current-collecting body.
Plus plate current-collecting body is prepared for battery and detection method is the same as embodiment 1.
Embodiment 3
By 3：7 molar ratio point takes silicotungstate lithium Li4SiW12O40Polyoxometallic acid lithium salts and polypyrrole monomer, are not prepared
Polyoxometallic acid lithium salt solution and polypyrrole solution, the polyoxometallic acid lithium salts Li that will be prepared4SiW12O40Solution slowly adds dropwise
Enter in polypyrrole solution, react at room temperature 10 hours, then use distilled water and alcohol washing precipitate repeatedly, until filtrate without
Until color, drying 10 hours in 40 DEG C of vacuum drying chambers are put the precipitate in, composite material is obtained.
Composite material is pressed again：Polytetrafluoroethylene (PTFE)=19：1 admittedly containing mass ratio be mixed into collector print compound, will collect
Fluid prints compound in solvent N-methyl pyrilidone（NMP）It is middle to be stirred into slurry through 10 hours, by intaglio printing
Slurry is printed on the aluminium foil of thickness 12um by machine, after dry, as plus plate current-collecting body.
Plus plate current-collecting body is prepared for battery and detection method is the same as embodiment 1.
Embodiment 4
By 1：3 molar ratio point takes Li3PMo12O40Polyoxometallic acid lithium salts and polypyrrole monomer, do not prepare multi-metal oxygen
Sour lithium salt solution and polypyrrole solution, the polyoxometallic acid lithium salts Li that will be prepared3PMo12O40Polypyrrole is slowly added dropwise in solution
In solution, reacts at room temperature 24 hours, then use distilled water and alcohol washing precipitate repeatedly, until filtrate is colourless,
Drying 6 hours in 200 DEG C of vacuum drying chambers are put the precipitate in, composite material is obtained.
Composite material is pressed again：Polytetrafluoroethylene (PTFE)=19：1 admittedly containing mass ratio be mixed into collector print compound, will collect
Fluid prints compound in solvent N-methyl pyrilidone（NMP）It is middle to be stirred into slurry through 12 hours, by intaglio printing
Slurry is printed on the aluminium foil of thickness 12um by machine, after dry, as plus plate current-collecting body.
Plus plate current-collecting body is prepared for battery and detection method is the same as embodiment 1.
Embodiment 5
By 3.5：6.5 molar ratio point takes Li3PW12O40Polyoxometallic acid lithium salts and polyphenyl amine monomers are not prepared mostly golden
Belong to oxygen acid lithium salt solution and polyaniline solutions, the polyoxometallic acid lithium salts Li that will be prepared3PW12O40Polyphenyl is slowly added dropwise in solution
In amine aqueous solution, reacts at room temperature 12 hours, then use distilled water and alcohol washing precipitate repeatedly, be until filtrate is colourless
Only, drying 8 hours in 100 DEG C of vacuum drying chambers are put the precipitate in, composite material is obtained.
Composite material is pressed again：Polytetrafluoroethylene (PTFE)=19：1 admittedly containing mass ratio be mixed into collector print compound, will collect
Fluid prints compound in solvent N-methyl pyrilidone（NMP）It is middle to be stirred into slurry through 12 hours, by intaglio printing
Slurry is printed on the aluminium foil of thickness 12um by machine, after dry, as plus plate current-collecting body.
Plus plate current-collecting body is prepared for battery and detection method is the same as embodiment 1.
Comparative example 1
Battery production process and test method only use carbon material as intaglio printing material, carbon materials with embodiment 1
Material：Kynoar（PVDF）=19：1 solid content ratio, in solvent N-methyl pyrilidone（NMP）It is middle to be stirred through 12 hours
Uniformly, slurry is printed on the aluminium foil of 12um by intaglio press, after dry, as plus plate current-collecting body.
Comparative example 2
Battery production process only uses H with embodiment 12O2Make oxidizing polymerized monomer and forms electrode material.This
Polymer monomer is pyrroles, H in example2O2Molar ratio with pyrroles is 4.5：5.5, it reacts 7-10 hours obtain electricity at room temperature
Pole material.Battery making step is the same as embodiment 1
Gained battery is done into AC internal Resistance test, the results detailed in Table：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | |
| Internal resistance (milliohm) | 1.32 | 1.29 | 1.41 | 1.57 | 1.34 | 2.40 | 1.93 |
The battery prepared by the printing collector of composite material is used as can be seen from the above table, and internal resistance and polarization are less than
The collector battery printed using traditional carbon material, smaller than not using the battery of the collector of printing, so using the present invention
Plus plate current-collecting body made of have remarkable result to reducing the internal resistance of cell and polarization.
Claims (5)
1. a kind of preparation method of the collector of lithium ion battery, it is characterised in that：In conducting polymer-polyoxometallic acid
Bonding agent is added in the composite material of lithium salts, becomes collector printing compound, the collector is printed into compound in solvent
In be stirred for slurry, the slurry is printed on aluminium foil through intaglio press, plus plate current-collecting body is made；
The synthetic method of the composite material is：
(1) in molar ratio 1：4 ratio point takes polyoxometallic acid lithium salts and aniline monomer, and polyoxometallic acid lithium salts is gathered with conduction
It closes object and is configured to aqueous solution；
(2) polyoxometallic acid lithium salt solution is added dropwise in conducting polymer monomer solution, it is small reacts 1-24 at room temperature
When, distilled water and alcohol washing precipitate repeatedly are then used, until filtrate is colourless, puts the precipitate in 40-200 DEG C very
It is 2-10 hours dry in empty drying box, obtain composite material；
(3) composite material and bonding agent are pressed 19：1 mass ratio is mixed into collector printing compound, collector is printed multiple
It closes object and was stirred into the collector printing compound through 10-12 hours in solvent N-methyl pyrilidone.
2. the preparation method of the collector of lithium ion battery according to claim 1, it is characterised in that：The conduction
Polymer is the mixture of one or more of polyaniline, polypyrrole, polythiophene.
3. the preparation method of the collector of lithium ion battery according to claim 1, it is characterised in that：Described is mostly golden
It includes Li to belong to oxygen acid lithium salts3XY12O40, Li4XY12O40One or more of mixture；X, which refers in two kinds of elements of P, Si, to be appointed
Meaning is a kind of；Y refers to any one in two kinds of elements of Mo, W.
4. the preparation method of the collector of lithium ion battery according to claim 1, it is characterised in that：The aluminium foil
Thickness be 12 microns.
5. the preparation method of the collector of lithium ion battery according to claim 1, it is characterised in that：The bonding
Agent is Kynoar or polytetrafluoroethylene (PTFE).
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| CN201610309467.3A CN105895921B (en) | 2016-05-11 | 2016-05-11 | A kind of preparation method of the collector of lithium ion battery |
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| CN201610309467.3A CN105895921B (en) | 2016-05-11 | 2016-05-11 | A kind of preparation method of the collector of lithium ion battery |
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| CN107142507B (en) * | 2017-05-03 | 2019-01-01 | 中国东方电气集团有限公司 | A kind of preparation method of lithium ion battery collector |
| FR3074967B1 (en) * | 2017-12-08 | 2021-04-23 | Commissariat Energie Atomique | CURRENT COLLECTOR AND CURRENT COLLECTOR-ELECTRODE ASSEMBLY FOR ACCUMULATOR OPERATING ACCORDING TO THE PRINCIPLE OF IONIC INSERTION AND DISINSERTION |
| CA3238946A1 (en) * | 2021-12-02 | 2023-06-08 | Kam Piu Ho | Modified current collector for secondary battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186349A (en) * | 1996-12-26 | 1998-07-01 | 中国科学院长春应用化学研究所 | Preparation of material for anode of solid lithium battery |
| CN103131267A (en) * | 2011-11-24 | 2013-06-05 | 珠海银通新能源有限公司 | Lithium ion battery current collector precoating and preparation method thereof |
| CN103956499A (en) * | 2014-04-15 | 2014-07-30 | 洛阳月星新能源科技有限公司 | Preparation method of safety coating for positive current collector in lithium ion battery |
| CN104051734A (en) * | 2014-06-16 | 2014-09-17 | 中国东方电气集团有限公司 | Electrode material for polyoxometallate carbon nanotube lithium ion battery and preparation method of electrode material |
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| JP2007273123A (en) * | 2006-03-30 | 2007-10-18 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery and method of manufacturing same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186349A (en) * | 1996-12-26 | 1998-07-01 | 中国科学院长春应用化学研究所 | Preparation of material for anode of solid lithium battery |
| CN103131267A (en) * | 2011-11-24 | 2013-06-05 | 珠海银通新能源有限公司 | Lithium ion battery current collector precoating and preparation method thereof |
| CN103956499A (en) * | 2014-04-15 | 2014-07-30 | 洛阳月星新能源科技有限公司 | Preparation method of safety coating for positive current collector in lithium ion battery |
| CN104051734A (en) * | 2014-06-16 | 2014-09-17 | 中国东方电气集团有限公司 | Electrode material for polyoxometallate carbon nanotube lithium ion battery and preparation method of electrode material |
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