CN107658495A - The solid lithium ion battery of composite polymer electrolyte - Google Patents
The solid lithium ion battery of composite polymer electrolyte Download PDFInfo
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- CN107658495A CN107658495A CN201710889365.8A CN201710889365A CN107658495A CN 107658495 A CN107658495 A CN 107658495A CN 201710889365 A CN201710889365 A CN 201710889365A CN 107658495 A CN107658495 A CN 107658495A
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- polymer electrolyte
- composite polymer
- lithium
- lithium ion
- ion battery
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- 239000005518 polymer electrolyte Substances 0.000 title claims abstract description 79
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 35
- 239000007787 solid Substances 0.000 title claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 31
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 14
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 14
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 10
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 10
- 238000004132 cross linking Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000005538 encapsulation Methods 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011149 active material Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000010345 tape casting Methods 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- -1 ester compound Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 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 claims description 3
- LSRGXLRLWFDKNR-UHFFFAOYSA-N FC(F)(F)[S] Chemical compound FC(F)(F)[S] LSRGXLRLWFDKNR-UHFFFAOYSA-N 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 229960002645 boric acid Drugs 0.000 claims description 3
- 235000010338 boric acid Nutrition 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 3
- 150000002466 imines Chemical class 0.000 claims description 3
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 3
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 3
- WDGKXRCNMKPDSD-UHFFFAOYSA-N lithium;trifluoromethanesulfonic acid Chemical compound [Li].OS(=O)(=O)C(F)(F)F WDGKXRCNMKPDSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 239000002210 silicon-based material Substances 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 claims description 3
- RTZKMGZSJBRJFI-UHFFFAOYSA-N boric acid;lithium Chemical compound [Li].OB(O)O RTZKMGZSJBRJFI-UHFFFAOYSA-N 0.000 claims 1
- 229940125898 compound 5 Drugs 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000002269 spontaneous effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 6
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 4
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- XOJJNYXNOJGQBK-UHFFFAOYSA-N [Li].[As](=O)(O)(O)O.[F] Chemical compound [Li].[As](=O)(O)(O)O.[F] XOJJNYXNOJGQBK-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001427 mPEG Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- 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)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of solid lithium ion battery of composite polymer electrolyte, it is characterized in that：Composite polymer electrolyte including positive electrode, negative material and negative material upper and lower surface is sequentially placed encapsulation and formed；The mixed liquor that the composite polymer electrolyte includes obtaining after polymer electrolyte matrix, lithium salts, inorganic compound and lithium ion conduction matrix are well mixed forms solid composite polymeric thing dielectric film.Beneficial effect：Composite polymer electrolyte can act on forming network structure by physical crosslinking in the present invention, and this network structure keeps stability under certain condition.Composite polymer electrolyte prepared by the present invention can have higher security with spontaneous film forming.Relative to other composite polymer electrolytes, the raw material that this method uses is easy to get, and production process can produce in existing lithium electricity producing equipment, and all has preferable electrochemical stability using material.
Description
Technical field
The invention belongs to cell art, more particularly to a kind of composite polymer electrolyte solid lithium ion battery and its
Preparation method.
Background technology
Lithium ion battery has density, output voltage height and the longevity of higher energy for other secondary cells
The advantages that long is ordered, universal use is obtained in electronic product and automotive field；And with the exhaustion of traditional fossil energy, environment
Pollution and the continuous aggravation of greenhouse effects, green energy resource exploitation are extremely urgent.The electrolyte of present lithium ion battery is mostly liquid
Body electrolyte, leakage, burning, the danger decomposed or even exploded can occur in use, have a strong impact on the person and property peace
Entirely.With the energy density of electronic device and electric automobile for lithium ion battery, high rate performance requirement raising, the peace of lithium battery
Full performance is just particularly important.
For liquid electrolyte, composite polymer electrolyte has light weight, viscoplasticity good and good film-forming property
The advantages that, the disadvantage mentioned above of liquid electrolyte can be overcome, improve the security that lithium ion battery uses.It is widely studied at present
Composite polymer electrolyte matrix be polyethylene glycol oxide, compound composition composite polymer electrolyte, but polyoxygenated with lithium salts
Ethene is easy to crystallize at room temperature, and more segments are in crystalline region at normal temperatures, can not participate in lithium ion transmission；Therefore prepare multiple
Conjunction polymer dielectric ionic conductivity is relatively low, and mechanical performance is not strong, limits its use.Typically can be by being blended, being copolymerized, handing over
Connection, dissaving structure suppress to crystallize, and improve its room-temperature conductivity.Wherein crosslinking, dissaving structure electrolyte prepare ratio
It is more complicated, and cost is higher, can not meet Li electricity enterprises requirement.And be blended, copolymerization process it is simple, can both improve multiple
Polymer dielectric ionic conductivity is closed, ensures lithium ion battery safety performance, production cost can be reduced again.It is in view of excellent above
Point, it is necessary to which a kind of preparation method and lithium with excellent electrochemical performance and cheap composite polymer electrolyte are provided
Ion battery
The content of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned technology, and provide a kind of composite polymer electrolyte solid-state lithium from
Sub- battery, composite polymer electrolyte can be acted on forming network structure by physical crosslinking, and network structure is protected under certain condition
Keep steady qualitative；The composite polymer electrolyte of preparation can have higher security with spontaneous film forming.
The present invention to achieve the above object, using following technical scheme：A kind of solid-state lithium of composite polymer electrolyte from
Sub- battery, it is characterized in that：Composite polymer electrolyte including positive electrode, negative material and negative material upper and lower surface according to
It is secondary to place encapsulation composition；The composite polymer electrolyte include polymer electrolyte matrix, lithium salts, inorganic compound and lithium from
The mixed liquor obtained after sub- conductive matrix is well mixed forms solid composite polymeric thing dielectric film.
The polymer electrolyte matrix is PVDF, modifier and one kind or several in branched p 0 lypropylene ester compound
Kind, and polymer electrolyte matrix is physical crosslinking to form network structure by branched structure；The polymer electrolyte matrix
Dosage is the 10%-80% of composite polymer electrolyte quality.
The lithium salts of the composite polymer electrolyte is bis trifluoromethyl sulphur imine lithium, lithium perchlorate, lithium hexafluoro phosphate, six
Fluorine arsenic acid lithium, LiBF4, dioxalic acid lithium borate, the one or more of difluorine oxalic acid boracic acid lithium or trifluoromethyl sulfonic acid lithium；
The lithium salts dosage is 5% to the 80% of composite polymer electrolyte quality.
The inorganic compound of the composite polymer electrolyte includes nano silicon, nano titanium oxide or nano oxygen
Change the one or more in aluminium；The inorganic compound dosage is the 0.5%-80% of composite polymer electrolyte quality.
The lithium ion conduction matrix of the composite polymer electrolyte is NHD；The lithium ion conduction base
Body dosage is the 30-70% of composite polymer electrolyte quality.
The inorganic nano-particle particle diameter of the composite polymer electrolyte is 20-200nm.
The composite polymer electrolyte is made by solution casting method and knife coating.
Active material in the positive electrode is the one or more of LiFePO4, cobalt acid lithium or sulfide.
In the negative material active material be lithium metal, lithium metal alloy, lithium titanate, graphite or silicon materials one kind or
It is several.
Beneficial effect：Composite polymer electrolyte can act on forming network structure by physical crosslinking in the present invention, this
Network structure keeps stability under certain condition.Composite polymer electrolyte prepared by the present invention can have with spontaneous film forming
Higher security.Relative to other composite polymer electrolytes, the raw material that this method uses is easy to get, and production process can be existing
Produced in lithium electricity producing equipment, and all there is preferable electrochemical stability using material.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic network structure of polymer electrolyte matrix.
In figure：1st, positive electrode, 2, composite polymer electrolyte, 3, negative material.
Embodiment
Describe the embodiment of the present invention in detail with reference to preferred embodiment.
Accompanying drawing is referred to, present embodiments provides a kind of solid lithium ion battery of composite polymer electrolyte, including positive pole
1st, negative material 3 and the composite polymer electrolyte of negative material upper and lower surface 2 are sequentially placed two layers of assembled package and formed；Institute
Stating composite polymer electrolyte includes polymer electrolyte matrix, lithium salts, inorganic compound and the mixing of lithium ion conduction matrix
The mixed liquor obtained after even forms solid composite polymeric thing dielectric film.
Accompanying drawing 2 is referred to, the polymer electrolyte matrix is in PVDF, modifier and branched p 0 lypropylene ester compound
One or more, and polymer electrolyte matrix is physical crosslinking to form network structure by branched structure；The electrostrictive polymer
Solve the 10%-80% that matter matrix dosage is composite polymer electrolyte quality.
The lithium salts of the composite polymer electrolyte is bis trifluoromethyl sulphur imine lithium, lithium perchlorate, lithium hexafluoro phosphate, six
Fluorine arsenic acid lithium, LiBF4, dioxalic acid lithium borate, the one or more of difluorine oxalic acid boracic acid lithium or trifluoromethyl sulfonic acid lithium；
The lithium salts dosage is 5% to the 80% of composite polymer electrolyte quality.
The inorganic compound of the composite polymer electrolyte includes nano silicon, nano titanium oxide or nano oxygen
Change the one or more in aluminium；The inorganic compound dosage is the 0.5%-80% of composite polymer electrolyte quality.
The lithium ion conduction matrix of the composite polymer electrolyte is NHD；The lithium ion conduction base
Body dosage is the 30-70% of composite polymer electrolyte quality.
The inorganic nano-particle particle diameter of the composite polymer electrolyte is 20-200nm.
The composite polymer electrolyte is made by solution casting method and knife coating.
Active material in the positive electrode is the one or more of LiFePO4, cobalt acid lithium or sulfide.
In the negative material active material be lithium metal, lithium metal alloy, lithium titanate, graphite or silicon materials one kind or
It is several.
Prepare the specific steps embodiment of the present invention
1) NHD and lithium salts LiTFSI are dissolved in acetonitrile, the mass concentration of its NHD is
10%, LiTFSI mass concentration are 10%；Then the cobalt acid lithium LCO of positive electrode active materials is added used as in the solution and is used as
The acetylene black and CNT of conductive agent, wherein LCO mass concentration are 70%, and the mass concentration of acetylene black is 5%, and carbon is received
The mass concentration of mitron is 5%；Any of the above material is stirred into 2-8h, it is sufficiently mixed and prepares slurry.The slurry is applied
The aluminium foil both sides to 12um are covered, the forced air drying 20h at 85 DEG C, are rolled to prepare positive plate；
2) accompanying drawing 2 is referred to, PVDF-HFP is dissolved in 1-METHYLPYRROLIDONE (NMP), and wherein PVDF-HFP solid contents are
10%.NHD, alumina in Nano level and lithium salts LiTFSI are added in PVDF-HFP solution, stir 12h,
Different raw material are able to fully dispersed, and wherein NHD accounts for gross mass 40%, and nanoscale alundum (Al2O3) accounts for total matter
Amount 10%, [O]/[Li]=20.Solution prepared above is evenly coated on tetrafluoroethene plate using knife coating, heating, drying
It is standby, composite polymer electrolyte conductivity at room temperature is obtained as 4.58 × 10-5S/cm；
3) with the material positive pole of preparation, it is electrolyte that lithium piece, which is negative pole and prepares material,, will just using lamination manufacturing process
Pole material, composite polymer electrolyte, negative material, which is sequentially overlapped, prepares solid lithium ion battery.
4) according to 2) operating procedure, NHD addition is accounted for into gross mass 60%, then prepares composite polymeric
Thing electrolyte, composite polymer electrolyte conductivity at room temperature is obtained as 1.38 × 10-4S/cm；
5) according to 3) operating procedure, a kind of new solid lithium ion battery is prepared using lamination manufacturing process.
6) PVDF-HFP is dissolved in NMP, wherein PVDF-HFP solid contents are 10%.By NHD, nanometer
Grade aluminum oxide and lithium salts LiTFSI are added in PVDF-HFP solution, stir 12h, different raw material be able to it is fully dispersed, wherein
NHD accounts for gross mass 60%, and alumina in Nano level accounts for gross mass 10%, [O]/[Li]=20.Will be made above
Solution is evenly coated on positive plate using knife coating, and heating, drying is standby；
7) step 6) prepares positive plate and includes positive pole and barrier film two parts, using lamination manufacturing process, by positive plate, lithium piece
It is sequentially overlapped and prepares another New Solid lithium ion battery.
8) by aluminum isopropylate and methoxy poly (ethylene glycol), heating response obtains modified nano-alumina under vacuum conditions,
Nano aluminium oxide is replaced with modified nano-alumina according to step 6), obtains another solid lithium ion battery, or according to step
It is rapid that nano aluminium oxide 6) is replaced with nano silicon oxide, obtain another solid lithium ion battery.
The above-mentioned detailed description carried out with reference to embodiment to the composite polymer electrolyte solid lithium ion battery, is explanation
Property rather than it is limited, can include several embodiments according to limited scope, therefore of the invention overall not departing from
Changing and modifications under design, should belong within protection scope of the present invention.
Claims (9)
1. a kind of solid lithium ion battery of composite polymer electrolyte, it is characterized in that：Including positive electrode, negative material and
The composite polymer electrolyte of negative material upper and lower surface is sequentially placed encapsulation and formed；The composite polymer electrolyte includes poly-
The mixed liquor obtained after polymer electrolyte matrix, lithium salts, inorganic compound and lithium ion conduction matrix are well mixed forms solid
Composite polymer electrolyte membrane.
2. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：The polymer
Electrolyte matrix is the one or more in PVDF, modifier and branched p 0 lypropylene ester compound, and polymer dielectric
Matrix is physical crosslinking to form network structure by branched structure；The polymer electrolyte matrix dosage is electrolysed for composition polymer
The 10%-80% of matter quality.
3. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：It is described compound poly-
The lithium salts of polymer electrolyte is bis trifluoromethyl sulphur imine lithium, lithium perchlorate, lithium hexafluoro phosphate, hexafluoroarsenate lithium, tetrafluoro boric acid
Lithium, dioxalic acid lithium borate, the one or more of difluorine oxalic acid boracic acid lithium or trifluoromethyl sulfonic acid lithium；The lithium salts dosage is compound
5% to the 80% of polymer electrolyte amount.
4. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：It is described compound poly-
The inorganic compound of polymer electrolyte includes one kind or several in nano silicon, nano titanium oxide or nano aluminium oxide
Kind；The inorganic compound dosage is the 0.5%-80% of composite polymer electrolyte quality.
5. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：It is described compound poly-
The lithium ion conduction matrix of polymer electrolyte is NHD；The lithium ion conduction matrix dosage is composition polymer
The 30-70% of electrolyte quality.
6. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：It is described compound poly-
The inorganic nano-particle particle diameter of polymer electrolyte is 20-200nm.
7. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：It is described compound poly-
Polymer electrolyte is made by solution casting method and knife coating.
8. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：The positive pole material
Active material in material is the one or more of LiFePO4, cobalt acid lithium or sulfide.
9. the solid lithium ion battery of composite polymer electrolyte according to claim 1, it is characterized in that：The negative pole material
Active material is the one or more of lithium metal, lithium metal alloy, lithium titanate, graphite or silicon materials in material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889365.8A CN107658495A (en) | 2017-09-27 | 2017-09-27 | The solid lithium ion battery of composite polymer electrolyte |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889365.8A CN107658495A (en) | 2017-09-27 | 2017-09-27 | The solid lithium ion battery of composite polymer electrolyte |
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| CN107658495A true CN107658495A (en) | 2018-02-02 |
Family
ID=61117171
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| CN201710889365.8A Pending CN107658495A (en) | 2017-09-27 | 2017-09-27 | The solid lithium ion battery of composite polymer electrolyte |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048159A (en) * | 2019-04-27 | 2019-07-23 | 枣庄市产品质量监督检验所 | A kind of sulfur-containing polymer lithium cell electrolyte preparation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004204108A (en) * | 2002-12-26 | 2004-07-22 | Kanegafuchi Chem Ind Co Ltd | Method for producing thermoplastic elastomer |
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