CN107142507B - A kind of preparation method of lithium ion battery collector - Google Patents
A kind of preparation method of lithium ion battery collector Download PDFInfo
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- CN107142507B CN107142507B CN201710304029.2A CN201710304029A CN107142507B CN 107142507 B CN107142507 B CN 107142507B CN 201710304029 A CN201710304029 A CN 201710304029A CN 107142507 B CN107142507 B CN 107142507B
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- lithium ion
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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 15
- 239000000243 solution Substances 0.000 claims abstract description 31
- 239000002253 acid Substances 0.000 claims abstract description 26
- 239000002322 conducting polymer Substances 0.000 claims abstract description 22
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 22
- 239000000178 monomer Substances 0.000 claims abstract description 22
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 20
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 20
- 239000005030 aluminium foil Substances 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012153 distilled water Substances 0.000 claims abstract description 8
- 239000012266 salt solution Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims abstract description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims 2
- 150000003233 pyrroles Chemical class 0.000 claims 1
- 229930192474 thiophene Natural products 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 14
- 230000037427 ion transport Effects 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910020881 PMo12O40 Inorganic materials 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000767 polyaniline Polymers 0.000 description 3
- 229920000128 polypyrrole Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 229910020628 SiW12O40 Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011267 electrode slurry Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- UYDPQDSKEDUNKV-UHFFFAOYSA-N phosphanylidynetungsten Chemical compound [W]#P UYDPQDSKEDUNKV-UHFFFAOYSA-N 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
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010020 roller printing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/02—Electrolytic coating other than with metals with organic materials
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- 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
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of preparation methods of lithium ion battery collector, include the following steps: (1) by 1:(1-9) molar ratio prepare polyoxometallic acid lithium salt solution and conducting polymer monomer solution respectively；(2) one side of aluminium foil is covered with empire cloth, another side connects the cathode of DC power supply, and the anode of DC power supply connects to electrode, and two electrodes are placed in prepared conducting polymer monomer solution；(3) it opens DC power supply, be powered, and conducting polymer monomer solution is added in the polyoxometallic acid lithium salt solution of preparation, it reacts 1-24 hours at room temperature, then with the aluminium foil after distilled water and ethanol wash plating, the aluminium foil after washing is placed in drying 2-10 hours in 40-200 DEG C of drying box again, obtains collector, which raises lithium ion transport properties, the transmission characteristic that electronics is improved by conducting polymer meets composite material to the double requirements of lithium ion transport and electron-transport.
Description
Technical field
The present invention relates to technical field of lithium batteries more particularly to a kind of preparation methods of lithium ion battery collector.
Background technique
Lithium battery attracts attention always again since the invention as a kind of effective energy conversion and energy storage device,
The features such as its operating voltage is high, energy density is big, specific energy is high, specific power is big, electric discharge is steady, memory-less effect is widely used in
Various electronic products.Although lithium battery achieves very ten-strike in 3C Product, it is applied in power and energy storage field is still located
In the starting stage, the key factor for restricting its development is composite material, is mainly used in the anode of power and energy storage field at present
Material is LiFePO4, and LiFePO4 has the advantage of thermal stability and safety compared to other positive electrodes, but by the inner
The limitation of portion's lattice, electric conductivity is poor, the demand of high current charge-discharge is unable to satisfy, in order to solve problems, mainly from afflux
Body is started with.The processing method of traditional affluxion body in lithium ion batteries generally uses intaglio printing, i.e., passes through in collection liquid surface recessed
One layer of carbon material of roller printing, the method can only be promoted for the requirement of electron-transport.The plating film forming that this patent is stated
Handling collector can also be in polyoxometallic acid lithium while lithium ion transmits in conducting polymer in charge and discharge process
It is conducted in the three-dimensional framework of salt, improves lithium ion transport properties, the transmission characteristic of electronics is improved further through conducting polymer,
Composite material is met to the double requirements of lithium ion transport and electron-transport.
China Patent No. discloses a kind of preparation method of lithium ion battery in 2015.8.5 for 201510116174.9, first
One layer of composite Nano conduction liquid is first coated on netted copper foil/aluminum foil current collector surface using gravure application, after dry
Anode and cathode slurry is coated on its surface again, roll-in is carried out to pole piece using cold-hot pressure rolling techniques later, uses laser again later
Microtomy cuts its pole piece, and finally prepares lithium ion battery.Method used by above-mentioned patent and lithium battery
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 to make 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 polarized
It acts on limited.
Summary of the invention
In order to overcome the drawbacks of the prior art, the present invention provides a kind of preparation method of lithium ion battery collector,
The collector of this method preparation, can also be in more metals while lithium ion transmits in conducting polymer in charge and discharge process
It is conducted in the three-dimensional framework of oxygen acid lithium salts, improves lithium ion transport properties, the biography of electronics is improved further through conducting polymer
Defeated characteristic meets composite material to the double requirements of lithium ion transport and electron-transport.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that:
A kind of preparation method of lithium ion battery collector, which comprises the steps of:
(1) by 1:(1-9) molar ratio prepare polyoxometallic acid lithium salt solution respectively and conducting polymer monomer is molten
Liquid；
(2) one side of aluminium foil is covered with empire cloth, another side connects the cathode of DC power supply, the anode of DC power supply
It connects to electrode, and two electrodes is placed in prepared conducting polymer monomer solution；
(3) it opens DC power supply, be powered, and conducting polymer monomer is added in the polyoxometallic acid lithium salt solution of preparation
Solution, reacts 1-24 hour at room temperature, the aluminium foil after being then electroplated with distilled water and ethanol wash, then by the aluminium foil after washing
Drying 2-10 hours in 40-200 DEG C of drying box are placed in, the collector is made.
The current range 0.1mA to 100mA, voltage range 1V-10V being powered in the step (3).
The conducting polymer monomer are as follows: the mixing of one or more of polyaniline, polypyrrole, polythiophene.
The polyoxometallic acid lithium salts be include Li3XY12O40, the mixing of one or more of Li4XY12O40；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 invention has the following advantages that
The present invention is provided electric current by DC power supply and is being formed a film on aluminium foil surface using electric plating method；Polymer packet
It includes: polyaniline (PAN), polypyrrole (PPY)；Polyoxometallic acid lithium salts includes Li3XY12O40, and Li4XY12O40, X refer to P, Si two
Any one in kind element；Y refers to any one in two kinds of elements of Mo, W.Polymer uses polyoxometallic acid lithium salts in the ring of plating
Oxidation polymerization monomer synthesizes under border.Since polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40 have three dimensional skeletal structure,
Lithium ion can conduct in the three-dimensional framework of polyoxometallic acid lithium salts, and after plating film forming, polyoxometallic acid lithium salts, which is attached to, is led
In electric polymer.It, can also be in polyoxometallic acid lithium while lithium ion transmits in conducting polymer in charge and discharge process
It is conducted in the three-dimensional framework of salt, improves lithium ion transport properties, the transmission characteristic of electronics is improved further through conducting polymer,
Composite material is met to the double requirements of lithium ion transport and electron-transport.
Specific embodiment
Embodiment 1
Polyoxometallic acid lithium salt solution and aniline monomer solution are prepared respectively by the molar ratio of 1:4, by current collector aluminum foil
Single side covered with insulating tape, another side connect DC power cathode, DC power anode connects to electrode, and two electrodes are set
In prepared conducting polymer monomer solution, the polyoxometallic acid lithium salts Li that will prepare3PMo12O40Solution slowly adds dropwise
Enter in aniline solution, open simultaneously DC power supply switch, is initially powered up, electric current 0.5mA, voltage range 1.5V, at room temperature instead
It answers 16 hours, then the collector after plating is washed repeatedly with distilled water and alcohol, until filtrate is colourless, after plating
Collector is placed in drying 2-10 hours in 40-200 DEG C of vacuum oven, spare.
It is used to be assembled into battery for collector after processing to test, battery used are as follows: anode sizing agent: ferric phosphate
Lithium content 91%, conductive carbon black content 5%, binder PVDF 4%, nmp solvent.Positive each component is stirred in the above ratio
Even formation anode sizing agent, and prepared slurry is coated in aluminum foil current collector after electroplated processing.Negative electrode slurry: living
Property substance content of graphite 93%, conductive carbon black content 3%, binder PVDF4%, deionized water.It is in the above ratio that cathode is each
Component stirs evenly to form negative electrode slurry, and prepared slurry is coated in 15um thickness copper foil current collector.
By cold pressing, cut-parts, the battery production process such as lamination are prepared into the battery of 20Ah capacity.
Detection method:
By prepared battery full charge, with the internal resistance of AC internal Resistance tester detection battery.
Embodiment 2
Polyoxometallic acid lithium phosphotungstic acid lithium Li is prepared respectively by the molar ratio of 1:33PW12O40Solution and pyrrole monomer are molten
Liquid covers the single side of current collector aluminum foil with insulating tape, and another side connects DC power cathode, and DC power anode connects to electricity
Pole, and two electrodes are placed in prepared conducting polymer monomer solution, change the polyoxometallic acid lithium salts prepared into phosphorus tungsten
Sour lithium Li3PW12O40Solution is slowly added dropwise in chromium solution, opens simultaneously DC power supply switch, is initially powered up, electric current
50mA, voltage range 5V react 8-10 hours at room temperature, then wash the afflux after plating repeatedly with distilled water and alcohol
Collector after plating is placed in drying 2-10 hours in 40-200 DEG C of vacuum oven until filtrate is colourless by body, standby
With.
Battery making step and test method are the same as embodiment 1.
Embodiment 3
Polyoxometallic acid lithium silicotungstate lithium Li is prepared respectively by the molar ratio of 1:94SiW12O40Solution and pyrrole monomer are molten
Liquid covers the single side of current collector aluminum foil with insulating tape, and another side connects DC power cathode, and DC power anode connects to electricity
Pole, and two electrodes are placed in prepared conducting polymer monomer solution, change the polyoxometallic acid lithium salts prepared into silicon tungsten
Sour lithium Li4SiW12O40Solution is slowly added dropwise in chromium solution, opens simultaneously DC power supply switch, is initially powered up, electric current
100mA, voltage range 10V react 8-10 hours at room temperature, then wash the afflux after plating repeatedly with distilled water and alcohol
Collector after plating is placed in drying 2-10 hours in 40-200 DEG C of vacuum oven until filtrate is colourless by body, standby
With.
Battery making step and test method are the same as embodiment 1.
Embodiment 4
Polyoxometallic acid lithium Li is prepared respectively by the molar ratio of 1:43PMo12O40Solution and pyrrole monomer solution, by afflux
The single side of body aluminium foil is covered with insulating tape, and another side connects DC power cathode, and DC power anode connects to electrode, and by two
Electrode is placed in prepared conducting polymer monomer solution, the polyoxometallic acid lithium salts Li that will be prepared3PMo12O40Solution is slowly
It is added dropwise in chromium solution, opens simultaneously DC power supply switch, be initially powered up, electric current 60mA, voltage range 4V, at room temperature
Reaction 10-24 hours, then will be electric until filtrate is colourless with the collector that distilled water and alcohol are washed repeatedly after plating
Collector after plating is placed in drying 2-10 hours in 40-200 DEG C of vacuum oven, spare.
Battery making step and test method are the same as embodiment 1.
Embodiment 5
Polyoxometallic acid lithium Li is prepared respectively by the molar ratio of 1:93PW12O40Solution and aniline monomer solution, by afflux
The single side of body aluminium foil is covered with insulating tape, and another side connects DC power cathode, and DC power anode connects to electrode, and by two
Electrode is placed in prepared conducting polymer monomer solution, the polyoxometallic acid lithium salts Li that will be prepared3PW12O40Solution slowly by
It is added dropwise in aniline solution, opens simultaneously DC power supply switch, be initially powered up, electric current 20mA, voltage range 3V, at room temperature instead
It answers 10-24 hours, then will be electroplated until filtrate is colourless with the collector that distilled water and alcohol are washed repeatedly after plating
Collector afterwards is placed in drying 2-10 hours in 40-200 DEG C of vacuum oven, spare.
Battery making step and test method are the same as embodiment 1.
Comparative example 1
Battery production process and test method are with embodiment 1, only using carbon material as intaglio printing material, carbon materials
Material: Kynoar (PVDF)=95%:5% solid content ratio was stirred in solvent N-methyl pyrilidone (NMP) through 12 hours
It mixes 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 is only collected using the anode that the aluminium foil without any processing makes as battery with embodiment 1
Fluid, battery making step is the same as embodiment 1.
Gained battery is done into AC internal Resistance test, is as a result detailed in table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | |
| Internal resistance (milliohm) | 1.15 | 1.03 | 0.97 | 1.20 | 1.37 | 1.76 | 2.53 |
From the results, it was seen that using the aluminum foil current collector of intaglio printing processing than untreated collector battery internal resistance
Want small, and the collector of electroplated processing using the advantage of intaglio printing than being become apparent.
Claims (4)
1. a kind of preparation method of lithium ion battery collector, which comprises the steps of:
(1) by 1:(1-9) molar ratio prepare polyoxometallic acid lithium salt solution and conducting polymer monomer solution respectively；
(2) one side of aluminium foil is covered with empire cloth, another side connects the cathode of DC power supply, and the anode of DC power supply connects pair
Electrode, and two electrodes are placed in prepared conducting polymer monomer solution；
(3) it opens DC power supply, be powered, and conducting polymer monomer solution is added in the polyoxometallic acid lithium salt solution of preparation,
It reacts at room temperature 1-24 hours, the aluminium foil after being then electroplated with distilled water and ethanol wash, then the aluminium foil after washing is placed in
It is 2-10 hours dry in 40-200 DEG C of drying box, the collector is made.
2. a kind of preparation method of lithium ion battery collector according to claim 1, it is characterised in that: the step
(3) the current range 0.1mA to 100mA, voltage range 1V-10V being powered in.
3. a kind of preparation method of lithium ion battery collector according to claim 1, it is characterised in that: the conduction
Polymer monomer are as follows: the mixing of one or more of aniline, pyrroles, thiophene.
4. a kind of preparation method of lithium ion battery collector according to claim 1, it is characterised in that: described mostly golden
Belonging to oxygen acid lithium salts to be includes Li3XY12O40, Li4 XY12O40One or more of mixing；X, which refers in two kinds of elements of P, Si, to be appointed
It anticipates one kind；Y refers to any one in two kinds of elements of Mo, W.
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