CN117417656A - Battery framework filling material, preparation method and application - Google Patents
Battery framework filling material, preparation method and application Download PDFInfo
- Publication number
- CN117417656A CN117417656A CN202311734659.5A CN202311734659A CN117417656A CN 117417656 A CN117417656 A CN 117417656A CN 202311734659 A CN202311734659 A CN 202311734659A CN 117417656 A CN117417656 A CN 117417656A
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- China
- Prior art keywords
- filling material
- battery
- phosphate
- framework
- halide
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- 239000000463 material Substances 0.000 title claims abstract description 93
- 238000011049 filling Methods 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 150000004820 halides Chemical class 0.000 claims abstract description 36
- 239000010452 phosphate Substances 0.000 claims abstract description 36
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 36
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 32
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 32
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000003960 organic solvent Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229910000077 silane Inorganic materials 0.000 claims abstract description 21
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 16
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012188 paraffin wax Substances 0.000 claims abstract description 16
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 16
- 239000005011 phenolic resin Substances 0.000 claims abstract description 16
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 16
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 16
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000661 sodium alginate Substances 0.000 claims abstract description 16
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 16
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 50
- 229910052744 lithium Inorganic materials 0.000 claims description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 32
- 239000011812 mixed powder Substances 0.000 claims description 25
- 239000011259 mixed solution Substances 0.000 claims description 25
- 239000002002 slurry Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000011490 mineral wool Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 5
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 229910001502 inorganic halide Inorganic materials 0.000 claims description 5
- 229910052816 inorganic phosphate Inorganic materials 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000011343 solid material Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001610 cryolite Inorganic materials 0.000 claims description 4
- 239000010436 fluorite Substances 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- 239000010451 perlite Substances 0.000 claims description 4
- 235000019362 perlite Nutrition 0.000 claims description 4
- 150000004756 silanes Chemical class 0.000 claims description 4
- 235000002639 sodium chloride Nutrition 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 3
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 3
- 239000010442 halite Substances 0.000 claims description 3
- 235000012245 magnesium oxide Nutrition 0.000 claims description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 3
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 claims description 3
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims description 2
- 229910001919 chlorite Inorganic materials 0.000 claims description 2
- 229910052619 chlorite group Inorganic materials 0.000 claims description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 2
- 235000019700 dicalcium phosphate Nutrition 0.000 claims description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 229910021607 Silver chloride Inorganic materials 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 9
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 23
- 210000001787 dendrite Anatomy 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000379 polymerizing effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012796 inorganic flame retardant Substances 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
-
- 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
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery framework filling material, a preparation method and application thereof, wherein the battery framework filling material comprises the following raw materials in percentage by weight: 10-18% of phenolic resin, 5-20% of silica sol, 5-20% of silane modified resin, 5-15% of polymethyl methacrylate, 5-10% of inorganic compound, 3-6.5% of bonding composition, 5-15% of polyurethane, 2-8% of sodium alginate solution, 3-10% of paraffin, 1-6% of phosphate, 1-5% of halide and 8-23% of volatile organic solvent. According to the invention, the adhesive composition capable of enhancing the adhesive force is added into the filling material to greatly enhance the adhesive force of the battery filling material, so that the filling material is coated and injected into gaps of a macroporous framework, the filling material can be well adhered to the framework after the solvent volatilizes and dries, the adhesive force still exists after the filling material is normally dried, and the filling material can not shake in the gaps of the framework along with the running of a forklift, so that the filling material in the battery is firm and stable.
Description
Technical Field
The invention relates to the technical field of battery fillers, in particular to a battery framework filling material, a preparation method and application.
Background
The forklift battery is used as a direct current power supply of equipment such as forklifts, tractors, carrier vehicles, underground mining locomotives and the like, and is widely used in places such as airports, stations, ports, vegetable and fruit markets, industrial and mining enterprises warehouses and the like. The forklift battery is a battery special for forklift which works by using the battery, namely a storage battery in a storage battery of an electric forklift, and the storage battery is one of the batteries and has the function of storing limited electric energy for use in a proper place. The working principle of the lithium battery is that chemical energy is converted into electric energy, wherein the lithium battery is used as a storage battery most commonly used in forklift batteries, and the growth of dendrites can be well restrained by restraining the volume expansion of a lithium metal negative electrode through restraining the deposition position of the lithium metal through the unique surface chemical characteristics and the interconnection structure of a three-dimensional framework. The framework material meeting the rolling condition is mainly a macroporous framework material, and macropores in the framework also provide space for the growth of metal lithium dendrites, so that the gaps of the macroporous framework are required to be filled with an insulating material to inhibit the growth of the metal lithium dendrites.
The Chinese patent of the issued publication No. CN110931712B discloses a composite metal lithium negative electrode with a filler and a preparation method thereof, wherein the composite metal lithium negative electrode can be high in mechanical strength by using the filler, the deposition behavior of metal lithium can be regulated and controlled, the growth of lithium dendrites is inhibited, the volume expansion effect is slowed down, the cycle performance of a battery is effectively improved, the free growth of lithium dendrites in a pore structure can be inhibited by the filler in a framework, the metal lithium is deposited on conductive framework fibers in the deposition process, the filler is extruded, and the reaction force of the filler to the metal lithium is larger than the yield strength of the lithium, so that the growth behavior of the metal lithium is changed.
The Chinese patent application with publication number of CN112018455A discloses a horizontal lead-acid battery with filler and an assembling method thereof, wherein the filler which is liquid at normal temperature and is solidified and converted into solid after being injected into the horizontal lead-acid battery; the filler can fill all the gaps of the polar plates, tightly wrap the polar plates, limit the expansion of the polar plates to two sides and only expand to the direction perpendicular to the plane of the polar plates, avoid the short circuit of the positive and negative polar plates, limit the expansion of the active substances and ensure the integrity of the active substances, and greatly improve the service life of the horizontal lead-acid battery; the assembling method is reasonable, simple and convenient in steps and good in sealing effect, and is beneficial to improving the overall performance of the battery and improving the assembling efficiency of the horizontal lead-acid battery.
The above referenced patents also suffer from the following drawbacks:
(1) The existing battery filler has poor adhesion, the filler is coated and injected into a gap of a macroporous framework, after the solvent volatilizes and the filler is dried, the filler cannot be well adhered to the framework, because the working condition temperature of the battery is generally about 40 ℃ when the battery is continuously used, the adhesion of the filler gradually ages and loses efficacy along with long-time use of the battery, for example, the patent of the publication No. CN110931712B is only weak adhesion although polyethylene and polyurethane are adopted as main materials of the filler, especially the filler cannot be adhered for a long time under the working condition of the temperature of the continuous 40 ℃, asphalt is added into the filler according to the patent of the publication No. CN112018455A, the adhesive effect of the asphalt is good, the paste with good adhesive effect can be generally shown under the higher temperature requirement, the adhesion disappears to form the solid state with higher hardness after the normal drying, and the solid state without the adhesion can run along with a forklift in the gap of the framework, and the solid state without shaking and instability in the gap of the framework, so that the stable use of the battery is greatly inconvenient.
(2) The existing fillers have poor flame retardant effect, for example, refer to the two patent documents, and various organic materials are adopted as materials of the fillers, however, when a short circuit fault occurs in the battery, high temperature environments can be rapidly generated, the fillers cannot resist higher temperatures, so that the battery can be burnt out in a short time, the purpose that the fillers have certain high temperature resistance can not be achieved by adding inorganic flame retardant materials into the fillers, the purposes that the growth of metal lithium dendrites can be restrained and the flame retardant performance of a battery framework can be improved can not be achieved, and the use of the battery is quite unfavorable.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a battery framework filling material, a preparation method and application, which solve the problems that the existing battery framework filling material has poor adhesion, the filling material is coated and injected into gaps of a macroporous framework, the solvent volatilizes the filling material and then is not well adhered to the framework after the filling material is dried, and the working condition temperature of the battery is generally about 40 ℃ when the battery is continuously used, the adhesion of the filling material gradually ages and fails along with the long-time use of the battery, meanwhile, the existing filling material has poor flame retardant effect, and the aim of enabling the filling material to have certain high temperature resistance by adding an inorganic flame retardant material into the filling material cannot be achieved, so that the aim of inhibiting the growth of metal lithium dendrites and improving the flame retardant property of the battery framework can not be achieved.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the battery framework filling material comprises the following raw materials in percentage by weight: 10-18% of phenolic resin, 5-20% of silica sol, 5-20% of silane modified resin, 5-15% of polymethyl methacrylate, 5-10% of inorganic compound, 3-6.5% of bonding composition, 5-15% of polyurethane, 2-8% of sodium alginate solution, 3-10% of paraffin, 1-6% of phosphate, 1-5% of halide and 8-23% of volatile organic solvent.
Preferably, the silane-modified resin is a resin obtained by polymerizing a silane compound and polyethylene.
Preferably, the inorganic composite is any combination of two or more of lime, gypsum, magnesia, perlite, mineral wool or rock wool.
Preferably, the bonding composition is prepared by mixing cyanoacrylate, polyvinyl alcohol, sodium hydroxide and aqueous acrylic emulsion according to the proportion of 1:0.3-0.5:0.1-0.3:0.5-0.7.
Preferably, the phosphate is one of ammonium dihydrogen phosphate, calcium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate and disodium hydrogen phosphate.
Preferably, the halide is any combination of two or more of halite, argillite, bromosilvery, calcite, fluorite or cryolite.
Preferably, the volatile organic solvent is one or more of ethanol, isopropanol and acetone.
In one aspect, the invention also provides a preparation method of the battery framework filling material, which specifically comprises the following steps:
s1, proportioning: firstly, respectively measuring the required weight parts of phenolic resin, silica sol, silane modified resin, polymethyl methacrylate, inorganic compound, bonding composition, polyurethane, sodium alginate solution, paraffin, phosphate, halide and volatile organic solvent by a weighing device;
s2, preparing mixed powder: sequentially crushing the inorganic compound, phosphate and halide weighed in the step S1 by using crushing equipment, grinding the crushed solid material into fine powder by using grinding equipment for 20-40min, screening by using a 200-300-mesh screen, and collecting the screened mixed powder of the inorganic compound, the phosphate and the halide;
s3, preparing a primary mixed solution: sequentially pouring the phenolic resin, the silica sol, the silane modified resin, the polymethyl methacrylate, the bonding composition, the polyurethane, the sodium alginate solution and the paraffin which are weighed in the step S1 into mixing and stirring equipment, adding a proper amount of volatile organic solvent, and mixing and stirring for 40-50min at the rotation speed of 600-700r/min and the temperature of 30-40 ℃ through the mixing and stirring equipment to obtain a primary mixed solution;
s4, preparing a heavy mixed solution: pouring the mixed powder of the inorganic compound, the phosphate and the halide prepared in the step S2 into the primary mixed liquid prepared in the step S3 for three times, wherein one third of the total mass of the mixed powder of the inorganic compound, the phosphate and the halide is poured each time, and after pouring each time, the mixed powder and the primary mixed liquid are fully mixed through three times of mixing at a rotating speed of 800-1000r/min for 10-15min, so that a heavy mixed liquid is prepared;
s5, preparing filling slurry: and (3) pouring all the residual organic solvent which is not poured in the step (S3) into the heavy mixed solution in the step (S4), mixing and stirring for 20-30min at the rotation speed of 800-1000r/min and the temperature of 30-40 ℃, and blending the heavy mixed solution into the required slurry, thereby obtaining the filling slurry.
On the other hand, the invention also provides an application of the battery framework filling material in preparing the composite metal lithium anode, which specifically comprises the following steps:
t1, coating or spraying the prepared filling slurry on a framework material, volatilizing a solvent through a drying method, drying the filler, and obtaining a treated framework material after the solvent is completely volatilized, wherein the pore structure of the framework material is filled with the filler;
and T2, stacking the metal lithium and the obtained treated framework material, and carrying out pressure treatment under the pressure of 10-60MPa and the temperature of 40-100 ℃, wherein the pressure treatment enables the metal lithium and the treated framework material to be completely embedded into a whole, so that the composite metal lithium anode is obtained.
Preferably, the drying method in the step T1 is one of vacuum drying or air drying, and the pressing treatment in the step T2 includes one of roll-to-roll pressing or stamping.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, the adhesive composition capable of enhancing the adhesive force is added into the filling material to greatly enhance the adhesive force of the battery filling material, so that the filling material is coated and injected into gaps of a macroporous framework, the filling material can be well adhered to the framework after the solvent volatilizes and dries, the adhesion of the filling material can not be gradually aged and disabled after the battery is used for a long time even in an environment with higher working condition temperature, the adhesion still exists after the filling material is normally dried, and the filling material can not shake in the gaps of the framework along with the running of a forklift, so that the filling material in the battery is firm and stable, and the use stability of the battery is ensured.
(2) According to the invention, the inorganic flame-retardant material is added into the filler, so that the filler has certain high temperature resistance, the purposes of inhibiting the growth of metal lithium dendrites and improving the flame retardant property of the battery framework are well achieved, the flame retardant effect of the filler is greatly improved, when a short circuit fault occurs in the battery, a high temperature environment can be rapidly generated, and the filler can well resist higher temperature, so that more emergency treatment time is strived for people, and the battery is very beneficial to use.
Drawings
FIG. 1 is a flow chart of a method of preparing a battery skeletal filler material of the present invention;
FIG. 2 is a data line graph of adhesion test experiments in examples of the present invention and comparative experiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the embodiment of the invention provides a battery skeleton filling material, a preparation method and an application, and specifically includes the following embodiments:
example 1: the battery framework filling material comprises the following raw materials in percentage by weight: 18% of phenolic resin, 10% of silica sol, 10% of silane modified resin, 10% of polymethyl methacrylate, 10% of inorganic compound, 6.5% of bonding composition, 10% of polyurethane, 5% of sodium alginate solution, 6.5% of paraffin, 3.5% of phosphate, 2.5% of halide and 8% of volatile organic solvent.
In the embodiment of the invention, the silane modified resin is a resin formed by polymerizing silane compounds and polyethylene, and the bonding composition is formed by mixing cyanoacrylate, polyvinyl alcohol, sodium hydroxide and aqueous acrylic emulsion according to the proportion of 1:0.4:0.2:0.6.
In an embodiment of the invention, the inorganic composite is a combination of lime, gypsum, magnesia, perlite, mineral wool and rock wool.
In the embodiment of the invention, the phosphate is monoammonium phosphate.
In the embodiment of the invention, the halide is a combination of halite, horned silver ore, bromosilver ore, chlorite, fluorite and cryolite.
In the embodiment of the invention, the volatile organic solvent is a composition consisting of ethanol, isopropanol and acetone.
The embodiment of the invention also provides a preparation method of the battery framework filling material, which specifically comprises the following steps:
s1, proportioning: firstly, respectively measuring the required weight parts of phenolic resin, silica sol, silane modified resin, polymethyl methacrylate, inorganic compound, bonding composition, polyurethane, sodium alginate solution, paraffin, phosphate, halide and volatile organic solvent by a weighing device;
s2, preparing mixed powder: crushing the inorganic compound, phosphate and halide weighed in the step S1 sequentially by a crushing device, grinding the crushed solid material into fine powder by a grinding device for 30min, screening by a 250-mesh screen, and collecting the screened mixed powder of the inorganic compound, the phosphate and the halide;
s3, preparing a primary mixed solution: sequentially pouring the phenolic resin, the silica sol, the silane modified resin, the polymethyl methacrylate, the bonding composition, the polyurethane, the sodium alginate solution and the paraffin which are weighed in the step S1 into mixing and stirring equipment, adding a proper amount of volatile organic solvent, and mixing and stirring for 45min at the speed of 650r/min and the temperature of 35 ℃ through the mixing and stirring equipment to obtain a primary mixed solution;
s4, preparing a heavy mixed solution: pouring the mixed powder of the inorganic compound, the phosphate and the halide prepared in the step S2 into the primary mixed liquid prepared in the step S3 for three times, wherein one third of the total mass of the mixed powder of the inorganic compound, the phosphate and the halide is poured each time, and after each pouring, the mixed powder and the primary mixed liquid are fully mixed through three times of mixing by using a rotating speed of 900r/min for 13min, so that a heavy mixed liquid is prepared;
s5, preparing filling slurry: and (3) pouring all the residual organic solvent which is not poured in the step (S3) into the heavy mixed solution in the step (S4), mixing and stirring for 25min at the rotation speed of 900r/min and the temperature of 35 ℃, and preparing the heavy mixed solution into the required slurry, thereby obtaining the filling slurry.
On the other hand, the invention also provides an application of the battery framework filling material in preparing the composite metal lithium anode, which specifically comprises the following steps:
t1, coating or spraying the prepared filling slurry on a framework material, volatilizing a solvent through a drying method, drying the filler, and obtaining a treated framework material after the solvent is completely volatilized, wherein the pore structure of the framework material is filled with the filler;
and T2, stacking the metal lithium and the obtained treated framework material, and carrying out pressure treatment under the pressure of 10-60MPa and the temperature of 40-100 ℃, wherein the pressure treatment enables the metal lithium and the treated framework material to be completely embedded into a whole, so that the composite metal lithium anode is obtained.
In the embodiment of the present invention, the drying method in the step T1 is vacuum drying, and the pressing treatment mode in the step T2 is a roll-to-roll mode.
Example 2: the battery framework filling material comprises the following raw materials in percentage by weight: 10% of phenolic resin, 5% of silica sol, 5% of silane modified resin, 5% of polymethyl methacrylate, 5% of inorganic compound, 3% of bonding composition, 15% of polyurethane, 8% of sodium alginate solution, 10% of paraffin, 6% of phosphate, 5% of halide and 23% of volatile organic solvent.
In the embodiment of the invention, the silane modified resin is a resin formed by polymerizing silane compounds and polyethylene, and the bonding composition is formed by mixing cyanoacrylate, polyvinyl alcohol, sodium hydroxide and aqueous acrylic emulsion according to the proportion of 1:0.3:0.1:0.5.
In an embodiment of the invention, the inorganic composite is a combination of lime, gypsum and magnesia.
In the embodiment of the invention, the phosphate is calcium hydrophosphate.
In the embodiment of the invention, the halide is a combination of stone salt, angular silver ore and bromosilver ore.
In the embodiment of the invention, the volatile organic solvent is a composition of ethanol and isopropanol.
The embodiment of the invention also provides a preparation method of the battery framework filling material, which specifically comprises the following steps:
s1, proportioning: firstly, respectively measuring the required weight parts of phenolic resin, silica sol, silane modified resin, polymethyl methacrylate, inorganic compound, bonding composition, polyurethane, sodium alginate solution, paraffin, phosphate, halide and volatile organic solvent by a weighing device;
s2, preparing mixed powder: crushing the inorganic compound, phosphate and halide weighed in the step S1 sequentially by a crushing device, grinding the crushed solid material into fine powder by a grinding device for 20min, screening by a 200-mesh screen, and collecting the screened mixed powder of the inorganic compound, the phosphate and the halide;
s3, preparing a primary mixed solution: sequentially pouring the phenolic resin, the silica sol, the silane modified resin, the polymethyl methacrylate, the bonding composition, the polyurethane, the sodium alginate solution and the paraffin which are weighed in the step S1 into mixing and stirring equipment, adding a proper amount of volatile organic solvent, and mixing and stirring for 40min at the rotating speed of 600r/min and the temperature of 30 ℃ through the mixing and stirring equipment to obtain a primary mixed solution;
s4, preparing a heavy mixed solution: pouring the mixed powder of the inorganic compound, the phosphate and the halide prepared in the step S2 into the primary mixed liquid prepared in the step S3 for three times, wherein one third of the total mass of the mixed powder of the inorganic compound, the phosphate and the halide is poured each time, and after pouring each time, the mixed powder and the primary mixed liquid are fully mixed through three times of mixing by the rotating speed of 800r/min for 10min, so that a heavy mixed liquid is prepared;
s5, preparing filling slurry: pouring all the residual organic solvent which is not poured in the step S3 into the heavy mixed solution in the step S4, mixing and stirring for 20min at the rotating speed of 800r/min and the temperature of 30 ℃, and preparing the heavy mixed solution into required slurry, thereby obtaining filling slurry;
on the other hand, the invention also provides an application of the battery framework filling material in preparing the composite metal lithium anode, which specifically comprises the following steps:
t1, coating or spraying the prepared filling slurry on a framework material, volatilizing a solvent through a drying method, drying the filler, and obtaining a treated framework material after the solvent is completely volatilized, wherein the pore structure of the framework material is filled with the filler;
and T2, stacking the metal lithium and the obtained treated framework material, and carrying out pressure treatment under the pressure of 10-60MPa and the temperature of 40-100 ℃, wherein the pressure treatment enables the metal lithium and the treated framework material to be completely embedded into a whole, so that the composite metal lithium anode is obtained.
In the embodiment of the present invention, the drying method in the step T1 is air drying, and the pressing treatment in the step T2 is a stamping method.
Example 3: the battery framework filling material comprises the following raw materials in percentage by weight: 15% of phenolic resin, 20% of silica sol, 20% of silane modified resin, 15% of polymethyl methacrylate, 5% of inorganic compound, 3% of bonding composition, 5% of polyurethane, 2% of sodium alginate solution, 3% of paraffin, 1% of phosphate, 1% of halide and 10% of volatile organic solvent.
In the embodiment of the invention, the silane modified resin is a resin formed by polymerizing silane compounds and polyethylene, and the bonding composition is formed by mixing cyanoacrylate, polyvinyl alcohol, sodium hydroxide and aqueous acrylic emulsion according to the proportion of 1:0.5:0.3:0.7.
In an embodiment of the invention, the inorganic composite is a combination of perlite, mineral wool, and rock wool.
In the embodiment of the invention, the phosphate is disodium hydrogen phosphate.
In an embodiment of the invention, the halide is a combination of calcite, fluorite and cryolite.
In the embodiment of the invention, the volatile organic solvent is a composition of ethanol and acetone.
The embodiment of the invention also provides a preparation method of the battery framework filling material, which specifically comprises the following steps:
s1, proportioning: firstly, respectively measuring the required weight parts of phenolic resin, silica sol, silane modified resin, polymethyl methacrylate, inorganic compound, bonding composition, polyurethane, sodium alginate solution, paraffin, phosphate, halide and volatile organic solvent by a weighing device;
s2, preparing mixed powder: crushing the inorganic compound, phosphate and halide weighed in the step S1 sequentially by a crushing device, grinding the crushed solid material into fine powder by a grinding device for 40min, screening by a 300-mesh screen, and collecting the screened mixed powder of the inorganic compound, the phosphate and the halide;
s3, preparing a primary mixed solution: sequentially pouring the phenolic resin, the silica sol, the silane modified resin, the polymethyl methacrylate, the bonding composition, the polyurethane, the sodium alginate solution and the paraffin which are weighed in the step S1 into mixing and stirring equipment, adding a proper amount of volatile organic solvent, and mixing and stirring for 50min at the temperature of 40 ℃ at the rotating speed of 700r/min by the mixing and stirring equipment to obtain a primary mixed solution;
s4, preparing a heavy mixed solution: pouring the mixed powder of the inorganic compound, the phosphate and the halide prepared in the step S2 into the primary mixed liquid prepared in the step S3 for three times, wherein one third of the total mass of the mixed powder of the inorganic compound, the phosphate and the halide is poured each time, and after pouring each time, the mixed powder and the primary mixed liquid are fully mixed through three times of mixing by the rotating speed of 1000r/min for 15min, so that a heavy mixed liquid is prepared;
s5, preparing filling slurry: pouring all the residual organic solvent which is not poured in the step S3 into the heavy mixed solution in the step S4, mixing and stirring for 30min at the rotating speed of 1000r/min and the temperature of 30-40 ℃, and preparing the heavy mixed solution into required slurry, thereby obtaining filling slurry;
on the other hand, the invention also provides an application of the battery framework filling material in preparing the composite metal lithium anode, which specifically comprises the following steps:
t1, coating or spraying the prepared filling slurry on a framework material, volatilizing a solvent through a drying method, drying the filler, and obtaining a treated framework material after the solvent is completely volatilized, wherein the pore structure of the framework material is filled with the filler;
and T2, stacking the metal lithium and the obtained treated framework material, and carrying out pressure treatment under the pressure of 10-60MPa and the temperature of 40-100 ℃, wherein the pressure treatment enables the metal lithium and the treated framework material to be completely embedded into a whole, so that the composite metal lithium anode is obtained.
In the embodiment of the present invention, the drying method in the step T1 is vacuum drying, and the pressing treatment mode in the step T2 is a roll-to-roll mode.
Comparison experiment: firstly, three groups of battery framework filling materials respectively prepared by the preparation methods of the embodiments 1 to 3 are selected to be coated on framework materials with the same specification, then solvents are volatilized through the same drying method, drying time and drying temperature, after the solvents are completely volatilized, three groups of treated framework materials are obtained, A groups, B groups and C groups are marked in sequence, meanwhile, common battery filling materials purchased in the existing market are selected to be operated in the same step to prepare a control group treated framework material, the control group treated framework material is marked as D group, and then adhesion test experiments and high temperature resistance test experiments are respectively carried out on the four groups of treated framework materials.
(1) Adhesion test experiments, the specific experimental procedure is as follows:
firstly, sequentially placing the group A treated framework materials on a test bench of stress test equipment, placing the filler filled in any hole gap of the treated framework under a test head of the test equipment, aligning the test head of the test equipment, starting the test equipment to control the stress test head to slowly descend, when the test head contacts and extrudes the filler at the position, reading a stress sensor on the test head in real time, displaying the stress sensor on a display of the test equipment, when the filler at the position is extruded to be separated from the framework, recording the maximum compressive stress of the filler by the test equipment, wherein the stress is the maximum adhesive force of the filler at the position between the frameworks, randomly selecting 5 test hole gaps on a test sample of the group A, sequentially operating according to the test steps, obtaining 5 groups of data, totally obtaining experimental data of 6 groups of maximum adhesive force, sequentially performing experimental operations on the group B, the group C and the group D according to the same experimental operation, respectively obtaining experimental data of each group, and the experimental data of each group and the situation are shown in figure 2.
As can be seen from fig. 2, the large adhesion at all experimental points of group a, group B and group C was higher than that of the experimental point of group D, so that the adhesion of the battery packs prepared using examples 1 to 3 of the present invention was better than that of the conventional fillers.
(2) The high temperature resistance test comprises the following specific experimental steps:
firstly, sequentially placing the framework materials treated in the group A on a test bench of heating equipment, placing the filler filled in any hole seam of the treated framework right above flame in the heating process, enabling the flame to be in contact with the filler, avoiding the flame from being completely in contact with the framework, starting timing and observing the change of the filler in the process of flame contact with the filler, sequentially carrying out experimental operations on the group B, the group C and the group D by the same experimental operation, and recording the experimental conditions of each group respectively, wherein the experimental conditions of each group are shown in table 1.
Table 1 high temperature resistance test experiment table
From the experimental characterization of table 1, it is known that the existing filler cannot resist high temperature in the high temperature test basically, and the battery will burn together with other materials once the battery fires, while the battery filler prepared by examples 1 to 3 of the present invention can resist high temperature for more than 1 minute, so the high temperature resisting time is long enough for the user to find and take emergency power-off measures, and the high temperature resisting time of the group a filler prepared by example 1 is longest, so example 1 of the present invention is the best implementation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The battery skeleton filling material is characterized in that: the raw materials comprise the following components in percentage by weight: 10-18% of phenolic resin, 5-20% of silica sol, 5-20% of silane modified resin, 5-15% of polymethyl methacrylate, 5-10% of inorganic compound, 3-6.5% of bonding composition, 5-15% of polyurethane, 2-8% of sodium alginate solution, 3-10% of paraffin, 1-6% of phosphate, 1-5% of halide and 8-23% of volatile organic solvent;
the inorganic compound is any combination of two or more of lime, gypsum, magnesia, perlite, mineral wool or rock wool;
the volatile organic solvent is one or more of ethanol, isopropanol and acetone.
2. The battery skeleton filling material according to claim 1, wherein: the silane modified resin is a resin polymerized from silane compounds and polyethylene.
3. The battery skeleton filling material according to claim 1, wherein: the bonding composition is prepared by mixing cyanoacrylate, polyvinyl alcohol, sodium hydroxide and aqueous acrylic emulsion according to the proportion of 1:0.3-0.5:0.1-0.3:0.5-0.7.
4. The battery skeleton filling material according to claim 1, wherein: the phosphate is one of ammonium dihydrogen phosphate, calcium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate and disodium hydrogen phosphate.
5. The battery skeleton filling material according to claim 1, wherein: the halide is any combination of two or more of halite, hornsilver ore, bromosilver ore, chlorite, fluorite or cryolite.
6. The method for preparing the battery skeleton filling material according to any one of claims 1 to 5, characterized in that: the method specifically comprises the following steps:
s1, proportioning: firstly, respectively measuring the required weight parts of phenolic resin, silica sol, silane modified resin, polymethyl methacrylate, inorganic compound, bonding composition, polyurethane, sodium alginate solution, paraffin, phosphate, halide and volatile organic solvent by a weighing device;
s2, preparing mixed powder: sequentially crushing the inorganic compound, phosphate and halide weighed in the step S1 by using crushing equipment, grinding the crushed solid material into fine powder by using grinding equipment for 20-40min, screening by using a 200-300-mesh screen, and collecting the screened mixed powder of the inorganic compound, the phosphate and the halide;
s3, preparing a primary mixed solution: sequentially pouring the phenolic resin, the silica sol, the silane modified resin, the polymethyl methacrylate, the bonding composition, the polyurethane, the sodium alginate solution and the paraffin which are weighed in the step S1 into mixing and stirring equipment, adding a proper amount of volatile organic solvent, and mixing and stirring for 40-50min at the rotation speed of 600-700r/min and the temperature of 30-40 ℃ through the mixing and stirring equipment to obtain a primary mixed solution;
s4, preparing a heavy mixed solution: pouring the mixed powder of the inorganic compound, the phosphate and the halide prepared in the step S2 into the primary mixed liquid prepared in the step S3 for three times, wherein one third of the total mass of the mixed powder of the inorganic compound, the phosphate and the halide is poured each time, and after pouring each time, the mixed powder and the primary mixed liquid are fully mixed through three times of mixing at a rotating speed of 800-1000r/min for 10-15min, so that a heavy mixed liquid is prepared;
s5, preparing filling slurry: and (3) pouring all the residual organic solvent which is not poured in the step (S3) into the heavy mixed solution in the step (S4), mixing and stirring for 20-30min at the rotation speed of 800-1000r/min and the temperature of 30-40 ℃, and blending the heavy mixed solution into the required slurry, thereby obtaining the filling slurry.
7. The use of the battery skeleton filling material in preparing composite metal lithium negative electrode of claim 1, wherein: the method specifically comprises the following steps:
t1, coating or spraying the prepared filling slurry on a framework material, volatilizing a solvent through a drying method, drying the filler, and obtaining a treated framework material after the solvent is completely volatilized, wherein the pore structure of the framework material is filled with the filler;
and T2, stacking the metal lithium and the obtained treated framework material, and carrying out pressure treatment under the pressure of 10-60MPa and the temperature of 40-100 ℃, wherein the pressure treatment enables the metal lithium and the treated framework material to be completely embedded into a whole, so that the composite metal lithium anode is obtained.
8. The use of the battery skeleton filling material according to claim 7 for preparing a composite metal lithium anode, characterized in that: the drying method in the step T1 is one of vacuum drying or air drying, and the pressing treatment in the step T2 includes one of roller-to-roller pressing or stamping.
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|---|---|---|---|---|
| CN110931712A (en) * | 2019-12-10 | 2020-03-27 | 清华大学 | Composite metal lithium cathode with filler and preparation method thereof |
| CN112018455A (en) * | 2019-05-28 | 2020-12-01 | 浙江图兰特储能科技有限公司 | Horizontal lead-acid battery with filler and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018455A (en) * | 2019-05-28 | 2020-12-01 | 浙江图兰特储能科技有限公司 | Horizontal lead-acid battery with filler and assembling method thereof |
| CN110931712A (en) * | 2019-12-10 | 2020-03-27 | 清华大学 | Composite metal lithium cathode with filler and preparation method thereof |
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| 马东卫: "胶粘剂制备及应用", 30 September 1998, 化学工业出版社, pages: 37 * |
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