CN105951006B - Aluminium foil suitable for lithium ion battery and preparation method thereof - Google Patents
Aluminium foil suitable for lithium ion battery and preparation method thereof Download PDFInfo
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- CN105951006B CN105951006B CN201610290401.4A CN201610290401A CN105951006B CN 105951006 B CN105951006 B CN 105951006B CN 201610290401 A CN201610290401 A CN 201610290401A CN 105951006 B CN105951006 B CN 105951006B
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- Prior art keywords
- aluminium
- rare earth
- ingot
- aluminium foil
- lithium ion
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- 239000005030 aluminium foil Substances 0.000 title claims abstract description 56
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 124
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 122
- 239000004411 aluminium Substances 0.000 claims abstract description 105
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 95
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 56
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 49
- 239000000956 alloy Substances 0.000 claims abstract description 49
- 238000000137 annealing Methods 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 28
- 235000012459 muffins Nutrition 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 12
- 238000005097 cold rolling Methods 0.000 claims abstract description 11
- 238000003801 milling Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000002608 ionic liquid Substances 0.000 claims description 38
- 239000002105 nanoparticle Substances 0.000 claims description 31
- -1 1- butyl -3- methyl imidazolium tetrafluoroborates Chemical class 0.000 claims description 30
- 150000003839 salts Chemical class 0.000 claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 238000013019 agitation Methods 0.000 claims description 16
- 229910003460 diamond Inorganic materials 0.000 claims description 16
- 239000010432 diamond Substances 0.000 claims description 16
- 239000002086 nanomaterial Substances 0.000 claims description 16
- 239000013049 sediment Substances 0.000 claims description 16
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical group [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 claims description 15
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- IBZJNLWLRUHZIX-UHFFFAOYSA-N 1-ethyl-3-methyl-2h-imidazole Chemical class CCN1CN(C)C=C1 IBZJNLWLRUHZIX-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 239000003337 fertilizer Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- KAIPKTYOBMEXRR-UHFFFAOYSA-N 1-butyl-3-methyl-2h-imidazole Chemical class CCCCN1CN(C)C=C1 KAIPKTYOBMEXRR-UHFFFAOYSA-N 0.000 claims description 8
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 8
- CAAMSDWKXXPUJR-UHFFFAOYSA-N 3,5-dihydro-4H-imidazol-4-one Chemical compound O=C1CNC=N1 CAAMSDWKXXPUJR-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims description 5
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 5
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 150000003863 ammonium salts Chemical class 0.000 claims description 5
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 5
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 5
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052693 Europium Inorganic materials 0.000 claims description 4
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims description 4
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052689 Holmium Inorganic materials 0.000 claims description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims description 3
- 229910052773 Promethium Inorganic materials 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- 229910052771 Terbium Inorganic materials 0.000 claims description 3
- 229910052775 Thulium Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 3
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 3
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 3
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 229940124530 sulfonamide Drugs 0.000 claims 1
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 17
- 239000000047 product Substances 0.000 description 15
- 230000002745 absorbent Effects 0.000 description 12
- 239000002250 absorbent Substances 0.000 description 12
- 239000011888 foil Substances 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 150000003851 azoles Chemical class 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000005518 electrochemistry Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 150000002460 imidazoles Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000012429 reaction media Substances 0.000 description 3
- 229910052702 rhenium Inorganic materials 0.000 description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 3
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910052776 Thorium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- UINDRJHZBAGQFD-UHFFFAOYSA-N 2-ethyl-1-methylimidazole Chemical compound CCC1=NC=CN1C UINDRJHZBAGQFD-UHFFFAOYSA-N 0.000 description 1
- PXKPKGHXANCVMC-UHFFFAOYSA-N 3-butyl-1-methyl-1,2-dihydroimidazol-1-ium;trifluoromethanesulfonate Chemical class OS(=O)(=O)C(F)(F)F.CCCCN1CN(C)C=C1 PXKPKGHXANCVMC-UHFFFAOYSA-N 0.000 description 1
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- SMWDFEZZVXVKRB-UHFFFAOYSA-N anhydrous quinoline Natural products N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 1
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Natural products C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- SULCVUWEGVSCPF-UHFFFAOYSA-L europium(2+);carbonate Chemical compound [Eu+2].[O-]C([O-])=O SULCVUWEGVSCPF-UHFFFAOYSA-L 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- H01M4/662—Alloys
-
- 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)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention discloses a kind of preparation method of the aluminium foil suitable for lithium ion battery, including：First, rare earth element is ground, obtains the Nano Rare-earth Materials that particle diameter is 1 200nm, itself and aluminium powder ground and mixed are stirred, are pressed into muffin, then muffin is melted, is cast into rare earth aluminium intermediate alloy ingot；2nd, rare earth aluminium intermediate alloy ingot and aluminium ingot are added into melting in smelting furnace, obtains blank；3rd, blank is cast into big plate ingot, the finishing of milling face, and realizes that crystalline aluminophosphate refines by annealing process；4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing；5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing, obtain head product；6th, head product is subjected to finish rolling, obtains aluminium foil.Accordingly, invention additionally discloses one kind aluminium foil as made from the above method.The intensity of aluminium foil of the present invention is high, and thermal conductivity is high, and conductance is high, and mechanical property is good, electrochemical corrosion resistant.
Description
Technical field
The present invention relates to metallic aluminium technical field, more particularly to a kind of aluminium foil of suitable lithium ion battery and its preparation side
Method.
Background technology
Lithium ion battery requires high with aluminium foil requirement than normal aluminium foil：
First, lithium ion battery is harsher with aluminium foil working environment, in lithium ion battery charge and discharge process, positive pole material
Material easily heating, positive electrode contact area maximum is aluminium foil.Aluminium foil is after thermal cycling, it is desirable to still is able to keep preferably to draw
Stretch intensity and other mechanical performance indexs.
Second, the working environment of aluminum foil for lithium battery is inside battery, the corrosiveness for having lithium hexafluorophosphate electrolyte solution, institute
To require the corrosion of aluminium foil electrolyte resistance, electrolyte is lithium hexafluoro phosphate, belongs to ionic liquid, has electrochemistry to any metal
And chemical attack.
3rd, lithium ion battery has extra electric field when discharge and recharge, so electrochemical corrosion is exceedingly fast, common
Rafifinal, in such a case, surface corrosion speed are very fast.The common passivation technology of high-purity aluminum foil, only generate a kind of band tunnel
The alundum (Al2O3) passivating film of channel effect, but this passivating film is the corrosion intolerant to electrochemistry.Only rare-earth salt passive film can be with
Electrochemical corrosion resistant, and be conductive passivating film.Therefore, extraordinary aluminium foil alloy is developed, turns into necessity of this battery process.
Rare earth aluminium alloy can generate the passivating film of conduction, protect fine aluminium not to be etched electrochemically, and it, which detects salt spray resistance index, to reach
By 1000 hours.
4th, the processing technology of lithium ion battery is three kinds at present：Stacked, takeup type, lamination add takeup type, these three
Processing technology is all present on the aluminium foil pole piece of lithium battery, applies stress.Stress is the necessary condition that electrochemical corrosion occurs.In lithium
The place of ion battery anode pole piece stress concentration, the speed of electrochemical corrosion faster, so improve aluminium mechanical strength index
An and high-tech requirement.
The research and application carried out at present to the electric conductivity of aluminium conductor, is more successfully rare earth aluminum and boracic aluminium
Material, though the former improves the intensity of aluminium alloy, but have impact on the electric conductivity of aluminium alloy；Although the latter can be to a certain extent
The electric conductivity of aluminium alloy is improved, but intensity can only achieve the level of fine aluminium.
Prior art, Publication No. CN1300356 C patent, it discloses a kind of aluminium base of high conductivity containing rare earth, boron
Material, material composition disclosed in embodiment contain aluminium Al, rhenium Re and boron, but just 48.8 tons of whole world rhenium Re yield, I
Just 2 tons of state's rhenium yield, it is expensive, cause the cost of aluminum material to remain high, it is difficult to marketing, it is difficult to be applied to big production
In the production of the lithium battery of amount.Moreover, the tensile strength and conductance of the aluminum of the patent can not meet lithium ion battery
With the requirement of aluminium foil.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of intensity height, thermal conductivity height, conductance height, mechanical property
It is good, electrochemical corrosion resistant, suitable for the aluminium foil of lithium ion battery.
The technical problem to be solved in the present invention also resides in a kind of method for preparing above-mentioned aluminium foil that provides, the letter of methods described step
Single, raw material sources are extensively, reaction medium non-corrosiveness, yield is higher, energy consumption is low.
In order to solve the above problems, the present invention provides a kind of preparation method of aluminium foil suitable for lithium ion battery, including：
First, the rare earth element of purity >=99% is put into diamond lapping machine and be ground, it is 1-200nm to obtain particle diameter
Nano Rare-earth Materials, the % of Nano Rare-earth Materials and purity >=99, aluminium powder ground and mixed of the copper content less than 0.005% are stirred,
According to 1:900-1200 weight ratio is pressed into muffin, then muffin is melted, is cast into rare earth aluminium intermediate alloy ingot；
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:8-12 is added in smelting furnace, is entered
Row melting, obtains blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
As the improvement of such scheme, the step 1 includes：
1) rare earth element is added in ionic liquid A and disperseed, the weight ratio of rare earth element and the ionic liquid A
For 1:1, reaction temperature is 90-110 DEG C, and is passed through carbon dioxide or ammonia, obtains sediment and ionic liquid B；
2) sediment and ionic liquid B are put into grinder and are ground, obtain the nanometer material that particle diameter is 1-200nm
Material；
3) nano material is evaporated under reduced pressure, nano-particle is obtained by extraction；
4) by nano-particle cleaning and heating, drying；
5) nano-particle after drying is ground with aluminium powder, mixed, according to 1:900-1200 weight is than pressure
Into muffin；
6) muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy；
7) contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot；
Wherein, the rare earth element selects times of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium
It is a kind of；
Purity >=99.99% of the rare earth element；
The ionic liquid A is from the cyanogen first salt of 1- ethyl-3-methylimidazoles three, 1- butyl -3- methylimidazole tetrafluoro boric acids
Salt, 1- butyl -3- methylimidazoles hexafluorophosphate, 1- butyl -3- methylimidazoles fluoroform sulphonate, 1- butyl -3- methyl miaows
Azoles bis-trifluoromethylsulfoandimide salt, the imidazolone of 1,3- dimethyl -2, chlorination 1,3- bis- (9- methyl anthracene) imidazoles, 1- ethyls -3-
Any of methyl imidazolium tetrafluoroborate, 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt are several.
As the improvement of such scheme, the rare earth element is added in ionic liquid A with carbonate or ammonium salt to be divided
Dissipate.
As the improvement of such scheme, the carbon dioxide or nitrogen and rare earth element and ionic liquid A mixture
Mol ratio mole ratio is 1：1.2.
As the improvement of such scheme, the ionic liquid A from the cyanogen first salt of 1- ethyl-3-methylimidazoles three, 1- butyl-
3- methyl imidazolium tetrafluoroborates, 1- butyl -3- methylimidazoles hexafluorophosphate, 1- butyl -3- methylimidazole trifluoromethanesulfonic acids
Salt, 1- butyl -3- methylimidazole bis-trifluoromethylsulfoandimides salt, the imidazolone of 1,3- dimethyl -2, (the 9- methyl of chlorination 1,3- bis-
Anthracene) imidazoles, 1- ethyl-3-methylimidazoles tetrafluoroborate, appointing in 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt
It is a kind of.
As the improvement of such scheme, the aluminium powder from the trade mark be 1060,1070,1080,1050,1145,1235,
1089th, aluminium powder made of 8011,8079,8021 aluminium alloy；
Purity >=99.99% of the aluminium powder, copper content are less than 0.002%；
The nano-particle is with aluminium powder according to 1:1000 weight ratio is pressed into muffin.
As the improvement of such scheme, the temperature of the electromagnetic agitation stove is 660-860 DEG C.
As the improvement of such scheme, step 4）In, nano particles by using deionized water is cleaned, is 100-130 in temperature
Heating, drying is carried out under conditions of DEG C.
As the improvement of such scheme, the preparation method also includes：
By step 1）The gas of generation, which is pumped into, to be absorbed in groove, obtains chemical fertilizer, wherein, the absorption groove is soda lime.
Accordingly, invention additionally discloses a kind of aluminium foil suitable for lithium ion battery, wherein, it is by above-mentioned preparation method system
.
Compared with prior art, the beneficial effects of the present invention are：
First, the present invention adds rare earth element in aluminium alloy ingots, coordinates ionic liquid, effectively increase aluminium foil intensity and
Mechanical performance index.Meanwhile rare earth element can form regular octahedron structure with aluminium atom, band gap is reduced, crystallization refinement, therefore
Being capable of electrochemical corrosion resistant.Moreover, the present invention must can be worked with high-purity rare-earth, and if impurity is more in rare earth, meeting
The disorder for causing aluminium alloy to be crystallized with rare earth, does not reach corrosion resistant effect.In addition, purity >=99.99% of aluminium powder of the present invention,
Copper content is less than 0.005%, can just avoid battery from forming compound with lithium ion when discharge and recharge, reduces lithium-ion electric
The loss of tankage, reach the charging effect of high-energy.Further, the present invention also by the size controlling of nano material in 200nm
Hereinafter, the reunion between rare earth ion is avoided, ensure that diffusion of the rare earth in aluminium, so as to ensure that aluminium atom forms regular octahedron
Structure.
Using the current collector aluminum foil for being used as lithium ion battery made of rare earth aluminium intermediate alloy ingot of the present invention, there is high stretching
Intensity, electrolyte resistance corrosion, good percentage elongation, Sven-Gan Eriksson cup is convex to be worth the advantages that high, and the tension of aluminium foil is not lost in long-term discharge and recharge
Intensity and every mechanical performance index.As electrokinetic cell, circulation will not produce belt phenomenon to the aluminium foil for a long time, thermal conductivity, lead
It is electrically good, can high current charge-discharge repeatedly, hot tearing gap will not be produced.
2nd, the present invention is chemically reacted using the high velocity impact in diamond lapping machine, made by solid phase synthesis process
Rare earth ammonium salt, rare earth carbonate are obtained under solid state shape, chemistry displacement reaction occurs, realizes the purification of rare earth element.Solid grain
Sub- high velocity impact, caused heat, reaction speed is accelerated, meanwhile, also it is heated acting, waste gas of having drained using gas.When
, will not chemical erosion diamond lap cavity as water byproduct and ammonia, carbon dioxide when displacement reaction occurs.Instead
Gas caused by answering, by soda lime absorbent, obtains the fertilizer of production agricultural demand by absorption tower.
The preparation method step of the present invention is simple, easily operated, is adapted to large-scale industrial production;Raw material sources are wide
It is general, reaction medium non-corrosiveness, it can recycle;Yield is higher, is easy to purify;Reaction condition is gentle, atmospheric reverse
Should, energy consumption is low.
Brief description of the drawings
Fig. 1 is the flow chart of the preparation method of aluminium foil of the present invention；
Fig. 2 is the flow chart of the preparation method of rare earth aluminium intermediate alloy ingot of the present invention.
Embodiment
In order that those skilled in the art more fully understands technical scheme, with reference to the accompanying drawings and examples
The present invention is described in further detail.
Referring to Fig. 1, the present invention provides a kind of preparation method of aluminium foil suitable for lithium ion battery, including：
S1, prepare rare earth aluminium intermediate alloy ingot：The rare earth element of purity >=99% is put into diamond lapping machine and ground
Mill, the Nano Rare-earth Materials that particle diameter is 1-200nm are obtained, the % of Nano Rare-earth Materials and purity >=99, copper content are less than
0.005% aluminium powder ground and mixed stirring, according to 1:900-1200 weight ratio is pressed into muffin, then muffin is melted, be cast into it is dilute
Native aluminium intermediate alloy ingot；
S2, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:8-12 is added in smelting furnace, is entered
Row melting, obtains blank；
Melting, it is degasification slagging-off, reduces the hydrogen in rare earth aluminum foil, remove the impurity in melting so that crystalline aluminophosphate is more
Exquisiteness, extensibility are high.The extensibility of aluminum foil finished product of the present invention is generally 1-4.5%.
S3, the blank after melting cast into big plate ingot, big plate ingot milling face is finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
The present invention casts big plate ingot, is the crystallization thinning process of aluminium tissue, stomata, and needle pore defect is less.Follow-up annealing
Technique can effectively prevent the generation of pin hole.
S4, big plate ingot is carried out to hot rolling, and carry out first time annealing, roughing, double annealing processing successively；
Because preceding working procedure has substantially carried out the structure refinement of aluminium, this hot-rolled process efficiency is higher, and dimensional accuracy is easy
Control, hot rolling time are shorter.Surface effect is good, easily the double smooth surface aluminium foils of rolling.Double annealing processing after hot rolling can be reduced
The defects of aluminium foil and pin hole, the crystallization of aluminium is refined, reduce paper tinsel and roll defect.
S5, big plate ingot is carried out to cold rolling, and carry out first time annealing, roughing, double annealing processing successively, obtained just
Product；
Big plate ingot is subjected to cold rolling, the plate form control of milling train is accurate, can obtain good aluminum foil plate band machining accuracy, protect
The surface density in aluminium foil later stage has been demonstrate,proved, ensure that plate form control during later stage aluminum foil rolling.Double annealing processing after cold rolling can be with
The defects of reducing aluminium foil and pin hole, the crystallization of aluminium is refined, reduce paper tinsel and roll defect.
S6, head product is subjected to finish rolling, obtains aluminium foil.
The invention provides a kind of method that aluminium foil is prepared using hot rolling technology, and the aluminium of different-thickness requirement can be made in it
Paper tinsel, it is set to meet the needs of lithium ion battery.Specifically, the thickness of the aluminium foil can be ultra-thin high intensity, high heat conduction, conduction
Series：6-10μ；Can also be intermediate gauge, high intensity, high heat conduction, conductive series：12-16μ；Or it is that lithium battery use dissipates
Hot plate series：30-500μ.
Specifically, the step S1 is to prepare rare earth aluminium intermediate alloy ingot, including：
S101, rare earth element is added in ionic liquid A and disperseed, the weight of rare earth element and the ionic liquid A
Than for 1:1, reaction temperature is 90-110 DEG C, and is passed through carbon dioxide or ammonia, obtains sediment and ionic liquid B；
Wherein, the rare earth element selects times of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium
It is a kind of；
Purity >=99.99% of the rare earth element.
The ionic liquid A is from the cyanogen first salt of 1- ethyl-3-methylimidazoles three, 1- butyl -3- methylimidazole tetrafluoro boric acids
Salt, 1- butyl -3- methylimidazoles hexafluorophosphate, 1- butyl -3- methylimidazoles fluoroform sulphonate, 1- butyl -3- methyl miaows
Azoles bis-trifluoromethylsulfoandimide salt, the imidazolone of 1,3- dimethyl -2, chlorination 1,3- bis- (9- methyl anthracene) imidazoles, 1- ethyls -3-
Any of methyl imidazolium tetrafluoroborate, 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt are several.
Preferably, the rare earth element is added in ionic liquid A with carbonate or ammonium salt and disperseed.
The ionic liquid A is from the cyanogen first salt of 1- ethyl-3-methylimidazoles three, 1- butyl -3- methylimidazole tetrafluoro boric acids
Salt, 1- butyl -3- methylimidazoles hexafluorophosphate, 1- butyl -3- methylimidazoles fluoroform sulphonate, 1- butyl -3- methyl miaows
Azoles bis-trifluoromethylsulfoandimide salt, the imidazolone of 1,3- dimethyl -2, chlorination 1,3- bis- (9- methyl anthracene) imidazoles, 1- ethyls -3-
Any of methyl imidazolium tetrafluoroborate, 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt.
The present invention adds rare earth element in aluminium alloy ingots, coordinates ionic liquid, effectively increases the intensity and power of aluminium foil
Learn performance indications.Meanwhile rare earth element can form regular octahedron structure with aluminium atom, band gap is reduced, crystallization refinement, therefore energy
Enough electrochemical corrosion resistants.Moreover, the present invention must can be worked with high-purity rare-earth, if impurity is more in rare earth, can make
Into aluminium alloy and the disorder of rare earth crystallization, corrosion resistant effect is not reached.
The carbon dioxide or nitrogen are 1 with the mol ratio mole ratio of rare earth element and ionic liquid A mixture：
1.2.For the present invention by the way that carbon dioxide or ammonia are passed through in rare earth element and ionic liquid A mixing liquid, residue is height
Purity rare-earth precipitation and a small amount of ionic liquid B.
It is further preferred that the preparation method also includes：
By step 1）The gas of generation, which is pumped into, to be absorbed in groove, obtains chemical fertilizer, wherein, the absorption groove is soda lime.
S102, sediment and ionic liquid B be put into grinder and be ground, obtain the nanometer that particle diameter is 1-200nm
Material.
Preferably, the grinder is diamond lapping machine.
High-purity rare-earth material is made, is realized using chemical colloidal sol, gel method.But realized in chemical sol-gel processes
Process among, the reunion between rare earth ion is very serious, if the precipitation method make rare earth particle it is excessive, influence rare earth
Diffusion in aluminium, so as to influence the chemical reaction of aluminium atom generation regular octahedron.
Inventor by substantial amounts of it is demonstrated experimentally that particle diameter of the rare earth element optimum dispersion in aluminium is no more than 200nm, because
This makes high-purity rare-earth using sol-gal process, and grinding is necessary condition.Common Ginding process is " bead mill ", is often used
" zirconium pearl " or " aluminium pill " is used as abrasive media, milling time length, pearl abrasion, can bring secondary pollution, reduce the pure of rare earth
Degree.This polishing can bring new impurity into, so as to influence the corrosion resistance of rare earth aluminium alloy.
The present invention uses diamond lapping machine, and it does not have abrasive media, and the effect of grinding is simply reached by diamond cavity.
It is ground particle and reciprocating collision occurs in diamond lap intracavitary, produce energy, so as to realizes grinding refinement.
The size controlling of nano material in below 200nm, is avoided the reunion between rare earth ion, ensure that dilute by the present invention
Diffusion of the soil in aluminium, so as to ensure that aluminium atom forms regular octahedron structure.
S103, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction.
S104, by nano-particle cleaning and heating, drying.
Preferably, nano particles by using deionized water is cleaned, heating baking is carried out under conditions of being 100-130 DEG C in temperature
It is dry.
More preferably, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 105 DEG C in temperature.
S105, the nano-particle after drying and aluminium powder be ground, mixed, according to 1:900-1200 weight ratio
It is pressed into muffin.
Specifically, the aluminium powder from the trade mark be 1060,1070,1080,1050,1145,1235,1089,8011,
8079th, aluminium powder made of 8021 aluminium alloy.
Purity >=99.99% of the aluminium powder, copper content are less than 0.005%, can just avoid battery when discharge and recharge
Compound is formed with lithium ion, the loss of capacity of lithium ion battery is reduced, reaches the charging effect of high-energy.Preferably, it is described
The copper content of aluminium powder is less than 0.002%.
More preferably, the nano-particle and aluminium powder are according to 1:1000 weight ratio is pressed into muffin.
S106, muffin stirred in electromagnetic agitation stove, be fused into contained aluminium-base intermediate alloy.
Preferably, the temperature of the electromagnetic agitation stove is 660-860 DEG C.
More preferably, the temperature of the electromagnetic agitation stove is 760 DEG C.
S107, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
In a word, the present invention is chemically reacted using the high velocity impact in diamond lapping machine by solid phase synthesis process,
So that chemistry displacement reaction under solid state shape, occurs for rare earth ammonium salt, rare earth carbonate, the purification of rare earth element is realized.Solid
Particle high speed collides, and caused heat, accelerates reaction speed, meanwhile, also it is heated acting, waste gas of having drained using gas.
, will not chemical erosion diamond lap cavity as water byproduct and ammonia, carbon dioxide when displacement reaction occurs.
Gas caused by reaction, by soda lime absorbent, obtains the fertilizer of production agricultural demand by absorption tower.
The preparation method step of the present invention is simple, easily operated, is adapted to large-scale industrial production;Raw material sources are wide
It is general, reaction medium non-corrosiveness, it can recycle;Yield is higher, is easy to purify;Reaction condition is gentle, atmospheric reverse
Should, energy consumption is low.
Accordingly, invention additionally discloses a kind of aluminium foil suitable for lithium ion battery, wherein, it is by above-mentioned preparation method system
.
The present invention reduces the content of copper, changes the synergy between each element, improve by adding rare earth element
The performance and mechanical strength of aluminium foil, improve conductance, improve exothermic temperature, its satisfaction is prepared electrokinetic cell lithium battery aluminium
The requirement of paper tinsel.
Using the current collector aluminum foil for being used as lithium ion battery made of rare earth aluminium intermediate alloy ingot of the present invention, there is high stretching
Intensity, electrolyte resistance corrosion, good percentage elongation, Sven-Gan Eriksson cup is convex to be worth the advantages that high, and the tension of aluminium foil is not lost in long-term discharge and recharge
Intensity and every mechanical performance index.As electrokinetic cell, circulation will not produce belt phenomenon to the aluminium foil for a long time, thermal conductivity, lead
It is electrically good, can high current charge-discharge repeatedly, hot tearing gap will not be produced.
It is as follows using the aluminium foil for being used as lithium ion battery made of rare earth aluminium intermediate alloy ingot, its technical parameter：
（One）, outward appearance：
1st, aluminum foil coil winds elastic appropriateness, end face smooth and clean, the smooth of the edge；
2nd, aluminum foil coil staggered floor is no more than ± 0.5mm；
3rd, aluminum foil coil die width is wide more than or equal to paper tinsel, and the end of the tube core two wide 5mm of of length no more than paper tinsel, core pipe diameter can select
With 3 inches, 6 inches；
4th, aluminium foil is wrapped in die center, and roundness deviation is within national standard；
5th, joint area rolls up two ends in aluminium clear joint marker.
（Two）, mechanical property：
| Thickness range | State | Tensile strength | Elongation percentage | Sven-Gan Eriksson carries on the back convex value |
| 0.007-0.03mm | H18 | 230-270 Mpa | ≥1.0% | ≥7.2 |
（Three）, other performances：
| Thermal conductivity | Conductivity σ | Pinhole number |
| 230-240 W/(m·K) | 66-89 s/m | 0-2/per sq-km |
It should be noted that for 8 line aluminium alloys, elongation percentage >=4.0% of the present invention.
The present invention is expanded on further with specific embodiment below
Embodiment 1
First, rare earth aluminium intermediate alloy ingot is prepared：
1st, the carbonate of praseodymium is added in the cyanogen first salt of 1- ethyl-3-methylimidazoles three and disperseed, praseodymium and 1- ethyl -3- first
The weight ratio of the cyanogen first salt of base imidazoles three is 1:1, reaction temperature is 90 DEG C, and is passed through carbon dioxide, obtains sediment and ionic liquid
Body B, the gas of generation are imported into soda lime absorbent groove, and chemical fertilizer is made by soda lime absorbent；
2nd, sediment and ionic liquid B are put into diamond lapping machine and be ground, ground 1 hour, obtaining particle diameter is
1-200nm nano material；
3rd, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction；
4th, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 100 DEG C in temperature；
5th, the nano-particle after drying and aluminium powder are ground, mixed, according to 1:900 weight ratio is pressed into powder
Cake, the aluminium powder are aluminium powder, purity >=99.99% made of 1060 aluminium alloys from the trade mark；
6th, muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy, the temperature of the electromagnetic agitation stove is
660 DEG C, mixing time is 4 hours；
7th, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:8 add in smelting furnace, are melted
Refining, obtains blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
Embodiment 2
First, rare earth aluminium intermediate alloy ingot is prepared：
1st, the ammonium salt of neodymium is added in 1- butyl -3- methylimidazole hexafluorophosphates and disperseed, neodymium and 1- butyl -3- first
The weight ratio of base limidazolium hexafluorophosphate is 1:1, reaction temperature is 95 DEG C, and is passed through ammonia, obtains sediment and ionic liquid
B, the gas of generation are imported into soda lime absorbent groove, and chemical fertilizer is made by soda lime absorbent；
2nd, sediment and ionic liquid B are put into diamond lapping machine and be ground, ground 2 hours, obtaining particle diameter is
1-200nm nano material；
3rd, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction.
4th, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 110 DEG C in temperature
5th, the nano-particle after drying and aluminium powder are ground, mixed, according to 1:1000 weight ratio is pressed into powder
Cake, the aluminium powder are aluminium powder, purity >=99.99% made of 1080 aluminium alloys from the trade mark；
6th, muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy, the temperature of the electromagnetic agitation stove is
700 DEG C, mixing time is 5 hours；
7th, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:10 add in smelting furnace, carry out
Melting, obtain blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
Embodiment 3
First, rare earth aluminium intermediate alloy ingot is prepared：
1st, will europium carbonate add 1- butyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt in be disperseed, europium and
The weight ratio of 1- butyl -3- methylimidazole bis-trifluoromethylsulfoandimide salt is 1:1, reaction temperature is 100 DEG C, and is passed through titanium dioxide
Carbon, sediment and ionic liquid B are obtained, the gas of generation is imported into soda lime absorbent groove, and chemical fertilizer is made by soda lime absorbent；
2nd, sediment and ionic liquid B are put into diamond lapping machine and be ground, ground 3 hours, obtaining particle diameter is
1-200nm nano material；
3rd, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction.
4th, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 115 DEG C in temperature
5th, the nano-particle after drying and aluminium powder are ground, mixed, according to 1:1100 weight ratio is pressed into powder
Cake, the aluminium powder are aluminium powder, purity >=99.99% made of 1050 aluminium alloys from the trade mark；
6th, muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy, the temperature of the electromagnetic agitation stove is
750 DEG C, mixing time is 5 hours；
7th, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:10 add in smelting furnace, carry out
Melting, obtain blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
Embodiment 4
First, rare earth aluminium intermediate alloy ingot is prepared：
1st, the carbonate of thorium is added in the imidazolone of 1,3- dimethyl -2 and disperseed, thorium and the imidazoles of 1,3- dimethyl -2
The weight ratio of quinoline ketone is 1:1, reaction temperature is 100 DEG C, and is passed through carbon dioxide, obtains sediment and ionic liquid B, generation
Gas is imported into soda lime absorbent groove, and chemical fertilizer is made by soda lime absorbent；
2nd, sediment and ionic liquid B are put into diamond lapping machine and be ground, ground 3 hours, obtaining particle diameter is
1-200nm nano material；
3rd, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction.
4th, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 120 DEG C in temperature
5th, the nano-particle after drying and aluminium powder are ground, mixed, according to 1:1150 weight ratio is pressed into powder
Cake, the aluminium powder are aluminium powder, purity >=99.99% made of 1235 aluminium alloys from the trade mark；
6th, muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy, the temperature of the electromagnetic agitation stove is
750 DEG C, mixing time is 6 hours；
7th, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:9 add in smelting furnace, are melted
Refining, obtains blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
Embodiment 5
First, rare earth aluminium intermediate alloy ingot is prepared：
1st, the ammonium salt of ytterbium is added in 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt and disperseed, ytterbium and 1-
The weight ratio of ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt is 1:1, reaction temperature is 110 DEG C, and is passed through ammonia, is obtained
To sediment and ionic liquid B, the gas of generation is imported into soda lime absorbent groove, and chemical fertilizer is made by soda lime absorbent；
2nd, sediment and ionic liquid B are put into diamond lapping machine and be ground, ground 4 hours, obtaining particle diameter is
1-200nm nano material；
3rd, nano material is evaporated under reduced pressure, nano-particle is obtained by extraction.
4th, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 130 DEG C in temperature
5th, the nano-particle after drying and aluminium powder are ground, mixed, according to 1:1200 weight ratio is pressed into powder
Cake, the aluminium powder is from aluminium powder, purity >=99.99% made of the aluminium alloy that the trade mark is 8021；
6th, muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy, the temperature of the electromagnetic agitation stove is
860 DEG C, mixing time is 6 hours；
7th, contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot.
2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:12 add in smelting furnace, carry out
Melting, obtain blank；
3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and aluminium knot is realized by annealing process
Crystalline substance refinement；
4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；
5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtained just
Product；
6th, head product is subjected to finish rolling, obtains aluminium foil.
Aluminium foil obtained by embodiment 1-5 is made into technology for detection, its technical parameter is as follows：
In summary, the intensity of aluminium foil of the present invention is high, and thermal conductivity is high, and conductance is high, and mechanical property is good, and resistance to electrochemistry is rotten
Erosion, disclosure satisfy that the requirement of lithium ion battery.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
The protection domain that the present invention invents.
Claims (8)
- A kind of 1. preparation method of aluminium foil suitable for lithium ion battery, it is characterised in that including：First, the rare earth element of purity >=99% is put into diamond lapping machine and be ground, it is receiving for 1-200nm to obtain particle diameter Rice rare earth material, the % of Nano Rare-earth Materials and purity >=99, aluminium powder ground and mixed of the copper content less than 0.005% are stirred, according to 1:900-1200 weight ratio is pressed into muffin, then muffin is melted, is cast into rare earth aluminium intermediate alloy ingot；2nd, by the % of rare earth aluminium intermediate alloy ingot and purity >=99 aluminium ingot by weight 1:8-12 is added in smelting furnace, is melted Refining, obtains blank；3rd, the blank after melting is cast into big plate ingot, big plate ingot milling face finished, and realize that crystalline aluminophosphate is thin by annealing process Change；4th, big plate ingot is subjected to hot rolling, and carries out first time annealing, roughing, double annealing processing successively；5th, big plate ingot is subjected to cold rolling, and carries out first time annealing, roughing, double annealing processing successively, obtain primiparity Product；6th, head product is subjected to finish rolling, obtains aluminium foil；Step 1 includes：1) rare earth element is added in ionic liquid A and disperseed, the weight ratio of rare earth element and the ionic liquid A is 1: 1, reaction temperature is 90-110 DEG C, and is passed through carbon dioxide or ammonia, obtains sediment and ionic liquid B；2) sediment and ionic liquid B are put into grinder and are ground, obtain the nano material that particle diameter is 1-200nm；3) nano material is evaporated under reduced pressure, nano-particle is obtained by extraction；4) by nano-particle cleaning and heating, drying；5) nano-particle after drying is ground with aluminium powder, mixed, according to 1:900-1200 weight ratio is pressed into powder Cake；6) muffin is stirred in electromagnetic agitation stove, is fused into contained aluminium-base intermediate alloy；7) contained aluminium-base intermediate alloy is cast into rare earth aluminium intermediate alloy ingot；Wherein, the rare earth element is from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, any of lutetium Kind；Purity >=99.99% of the rare earth element；The ionic liquid A is from the cyanogen first salt of 1- ethyl-3-methylimidazoles three, 1- butyl -3- methyl imidazolium tetrafluoroborates, 1- Butyl -3- methylimidazoles hexafluorophosphate, 1- butyl -3- methylimidazoles fluoroform sulphonate, 1- butyl -3- methylimidazoles double three Fluorine sulfonamide, the imidazolone of 1,3- dimethyl -2, chlorination 1,3- bis- (9- methyl anthracene) imidazoles, 1- ethyl -3- methyl miaows Any of azoles tetrafluoroborate, 1- ethyl-3-methylimidazole bis-trifluoromethylsulfoandimide salt are several.
- 2. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that the rare earth Element is added in ionic liquid A with carbonate or ammonium salt to be disperseed.
- 3. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that the dioxy It is 1 to change carbon or nitrogen with the mol ratio mole ratio of rare earth element and ionic liquid A mixture：1.2.
- 4. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that step 5） In, the aluminium powder is closed from the aluminium that the trade mark is 1060,1070,1080,1050,1145,1235,1089,8011,8079,8021 Aluminium powder made of gold；Purity >=99.99% of the aluminium powder, copper content are less than 0.002%；The nano-particle is with aluminium powder according to 1:1000 weight ratio is pressed into muffin.
- 5. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that the electromagnetism The temperature of rabble furnace is 660-860 DEG C.
- 6. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that step 4） In, nano particles by using deionized water is cleaned, heating, drying is carried out under conditions of being 100-130 DEG C in temperature.
- 7. the preparation method of the aluminium foil according to claim 1 suitable for lithium ion battery, it is characterised in that the preparation Method also includes：By step 1）The gas of generation, which is pumped into, to be absorbed in groove, obtains chemical fertilizer, wherein, the absorption groove is soda lime.
- 8. a kind of aluminium foil suitable for lithium ion battery, it is characterised in that it is as the preparation side described in claim any one of 1-7 Method is made.
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