CN105914397A - Fluorine-containing polymer electrolytes and preparation methods and applications thereof - Google Patents
Fluorine-containing polymer electrolytes and preparation methods and applications thereof Download PDFInfo
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Abstract
The invention provides fluorine-containing polymer electrolytes and preparation methods and applications thereof, relates to novel fluorine-containing polymer electrolytes and synthesis methods thereof, and aims at solving the problems that an existing polymer electrolyte containing a polyoxyethylene structure easily absorbs water and is relatively low in conductivity. The fluorine-containing polymer electrolytes are formed by ternary polymerization of sodium p-styrene sulfonate, polyethylene glycol methacrylate and hexafluorobutyl methacrylate, or tetrapolymerization of sodium p-styrene sulfonate, polyethylene glycol methacrylate, hexafluorobutyl methacrylate and ethylene vinyl carbonate; and the two fluorine-containing polymer electrolytes can also be put into a lithium salt solution for lithium salt replacement and applied to an all-solid-state lithium-ion battery as the electrolytes. A perfluoroalkyl group with strong electron-withdrawing property is introduced into the structure, so that ionization of lithium ions is promoted; the ionic conductivity is improved; the hydrophilicity of a polymer is reduced; and the mechanical property of an electrolyte membrane is improved.
Description
Technical field
The present invention relates to novel fluorine base polymer electrolyte and synthetic method thereof, and relate at full solid state polymer lithium-ion electric
Application in pond.
Background technology
Full solid state polymer lithium ion battery is the high specific energy batteries of new generation grown up on the basis of liquid lithium ionic cell
System, it is a kind of novel concept battery proposed for solving the safety problem of liquid lithium ionic cell existence.Polyoxyethylene
(PEO) being best suitable for preparing the matrix of all solid state electrolyte as generally acknowledge at present, the polymer dielectric of this system has obtained
To studying widely.
Recent studies indicate that, the impact of its performance such as electrical conductivity and mechanics is shown by the structure of solid polymer electrolyte
Writing, the transference number of ions of solid polymer electrolyte is close to 1 (Hyukkeun Oh et al., Poly (arylene ether)-Based
Single-Ion Conductors for Lithium-Ion Batteries, Chem.Mater.2016,28,188-196), and also can
So that the mechanical performance of polymer properly increases.Current polymer dielectric electrical conductivity is relatively low, general conductivity at room temperature
It is 10-6～10-9Scm-1, it is impossible to reach the requirement of lithium ion battery.
And the used solvent of preparation of existing most of fluoropolymer is containing fluorous solvent, such preparation technology cost is relatively
High.
Summary of the invention
The invention aims to solve the existing polymer dielectric containing polyoxyethylene structure hygroscopic, electrical conductivity is relatively low
Problem, and provide fluoropolymer electrolyte and its preparation method and application.
The chemical structural formula of fluoropolymer electrolyte of the present invention is as follows:
Wherein X represents Na or Li.
The preparation method of fluoropolymer electrolyte I of the present invention realizes according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte I；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
Fluoropolymer electrolyte of the present invention is by sodium p styrene sulfonate, polyethylene glycol methacrylate-styrene polymer, methyl-prop
Olefin(e) acid hexafluoro butyl ester ternary polymerization forms.
The preparation method of fluoropolymer electrolyte II of the present invention realizes according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte II；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, ethylene carbonate Asia second
Ester accounts for the 10%～15% of total reactant molar content.
Fluoropolymer electrolyte of the present invention is by sodium p styrene sulfonate, polyethylene glycol methacrylate-styrene polymer, methyl-prop
Olefin(e) acid hexafluoro butyl ester and vinylethylene carbonate is quarternary copolymerized forms.
The preparation method of fluoropolymer electrolyte III of the present invention realizes according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then polymerizate is joined in lithium salt solution
Carry out lithium salts displacement, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte III；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
The preparation method of fluoropolymer electrolyte IV of the present invention realizes according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then polymerizate is joined in lithium salt solution
Carry out lithium salts displacement, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte IV；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, ethylene carbonate Asia second
Ester accounts for the 10%～15% of total reactant molar content.
The application of fluoropolymer electrolyte III of the present invention and fluoropolymer electrolyte IV is as all-solid lithium-ion battery
In electrolyte.
Fluoropolymer electrolyte III and IV of the present invention employing Sulfonic Lithium is as lithium source, and draws in polymer architecture
Entering strong electrophilic perfluoroalkyl, the electric charge making sulfonic group anion is the most delocalized, promotes the ionization of lithium ion, improves
Ionic conductivity, the electrical conductivity of fluoropolymer electrolyte III and fluoropolymer electrolyte IV all reaches 8 × 10-6S/cm with
On.
At present solid polymer electrolyte mainly by Sulfonic Lithium as lithium source and PEO as matrix, the present invention is complete by introducing
The structure of fluoroalkyl is possible not only to increase the electrical conductivity of polymer dielectric, it is also possible to reduce the hydrophilic of polymer, optimizes poly-
The mechanical performance of polymer electrolyte membrane.
The present invention uses the most fluorine-containing a series of solvent to synthesize, and preparation condition is gentle.The present invention passes through radical reaction
Ethylene carbonate ester structure is introduced on main polymer chain, ethylene carbonate ester structure energy solvation and transmission lithium ion, reduce ion
Interphase interaction, improves the electrical conductivity of polymer dielectric.
Accompanying drawing explanation
Fig. 1 is the infrared spectrogram of the fluoropolymer electrolyte I that embodiment one obtains；
Fig. 2 is the hydrogen nuclear magnetic resonance spectrogram of the fluoropolymer electrolyte I that embodiment one obtains；
Fig. 3 is the electrical conductivity test figure of the fluoropolymer electrolyte I that embodiment one obtains；
Fig. 4 is the stress-strain curve of the fluoropolymer electrolyte I that embodiment one obtains；
Fig. 5 is the infrared spectrogram of the fluoropolymer electrolyte II that embodiment two obtains；
Fig. 6 is the hydrogen nuclear magnetic resonance spectrogram of the fluoropolymer electrolyte II that embodiment two obtains；
Fig. 7 is the electrical conductivity test figure of the fluoropolymer electrolyte II that embodiment two obtains；
Fig. 8 is the stress-strain curve of the fluoropolymer electrolyte II that embodiment two obtains；
Fig. 9 is the electrical conductivity test figure of the fluoropolymer electrolyte III that embodiment three obtains；
Figure 10 is the electrical conductivity test figure of the fluoropolymer electrolyte IV that embodiment four obtains.
Detailed description of the invention
Detailed description of the invention one: the preparation method of present embodiment fluoropolymer electrolyte I is implemented according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte I；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
The reaction of present embodiment poly (sodium 4-styrenesulfonate)-polyethylene glycol methacrylate-styrene polymer-Hexafluorobutyl mathacrylate
Equation is as follows:
Detailed description of the invention two: the preparation method of present embodiment fluoropolymer electrolyte II is implemented according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol first according to mol ratio
Base acrylate joins in solvent, is subsequently adding initiator, adds after reacting 10 minutes at a temperature of 70～80 DEG C
Hexafluorobutyl mathacrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte II；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, ethylene carbonate Asia second
Ester accounts for the 10%～15% of total reactant molar content.
Present embodiment poly (sodium 4-styrenesulfonate)-polyethylene glycol methacrylate-styrene polymer-Hexafluorobutyl mathacrylate-ethylene
The reaction equation of alkene ethyl is as follows:
Detailed description of the invention three: the preparation method of present embodiment fluoropolymer electrolyte III is implemented according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then polymerizate is joined in lithium salt solution
Carry out lithium salts displacement, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte III；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
Present embodiment step 3 uses dialysis process to remove NaCl and unnecessary LiCl, and purging is till solution thickness.Step
Concentration when rapid four polymer dielectrics are dissolved in N,N-dimethylformamide is 0.1g/mL.
Detailed description of the invention four: the preparation method of present embodiment fluoropolymer electrolyte IV is implemented according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds first after reacting 10 minutes at a temperature of 70～80 DEG C
Base hexafluorobutyl acrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then polymerizate is joined in lithium salt solution
Carry out lithium salts displacement, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte IV；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, ethylene carbonate Asia second
Ester accounts for the 10%～15% of total reactant molar content.
Detailed description of the invention five: the solvent in present embodiment step one unlike one of detailed description of the invention one to four is
Deionized water, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide or N, N-dimethyl pyrrolidone.Other step and
Parameter is identical with one of detailed description of the invention one to four.
Detailed description of the invention six: the initiator in present embodiment step one unlike detailed description of the invention one or three was
Ammonium sulfate, potassium peroxydisulfate, benzoyl peroxide or azodiisobutyronitrile.Other step and parameter and detailed description of the invention one or
Three is identical.
Detailed description of the invention seven: the initiator in present embodiment step one unlike detailed description of the invention two or four was
Ammonium sulfate or azodiisobutyronitrile.Other step and parameter are identical with detailed description of the invention two or four.
Detailed description of the invention eight: in present embodiment step 2 unlike detailed description of the invention three or four, lithium salt solution is dense
Degree is 0.5g/mL.Other step and parameter are identical with detailed description of the invention three or four.
Detailed description of the invention nine: at the drying and forming-film that present embodiment is described unlike one of detailed description of the invention one to four
The process of reason is as follows: be first dried 6～8 hours at 70～80 DEG C, is then cooled to 50～60 DEG C dry 6～8 hours, finally
It is cooled to 40 DEG C of drying and forming-films.Other step and parameter are identical with one of detailed description of the invention one to four.
Detailed description of the invention ten: at the drying and forming-film that present embodiment is described unlike one of detailed description of the invention one to four
The process of reason is as follows: under vacuum, be dried 24～72 hours with the Temperature Vacuum of 80 DEG C.Other step and parameter with
One of detailed description of the invention one to four is identical.
Detailed description of the invention 11: present embodiment drying and forming-film unlike one of detailed description of the invention one to four obtains
The thickness of fluoropolymer electrolyte is 0.5～20mm.Other step and parameter are identical with one of detailed description of the invention one to four.
Embodiment one: the preparation method of the present embodiment fluoropolymer electrolyte I is implemented according to the following steps:
One, under inert nitrogen gas protection atmosphere, it is that 1:2 is by 1.374g sodium p styrene sulfonate and 6g according to mol ratio
Polyethylene glycol methacrylate-styrene polymer joins in 40mLDMF solvent, is subsequently adding initiator azodiisobutyronitrile 84mg,
Add 0.265ml Hexafluorobutyl mathacrylate after reacting 10 minutes at a temperature of 80 DEG C, continue reaction 20 minutes,
Obtain polymerizate；
Two, polymerizate is cast in Teflon mould, process with 80 DEG C of drying and forming-films under vacuum and obtain
Fluoropolymer electrolyte I.
Poly (sodium 4-styrenesulfonate)-polyethylene glycol methacrylate-styrene polymer that the present embodiment prepares-methacrylic acid hexafluoro fourth
Ester Electrolyte film thickness is 18mm, and electrical conductivity is 3.51 × 10-7S·cm-1, its fracture strength is 1.62MPa.
Wherein the method for testing of electrical conductivity is as follows: add the dielectric film prepared between two copper electrodes, constitutes polymerization
Thing electrolyte blocking electrode system, does ac impedance measurement, obtains the complex impedance plane figure of polymeric film, and curve is at high frequency region
It is body impedance with the intersection value of transverse axis.According to body impedance (Rb) and ionic conductivity (σ) between pass
System: σ=d/ (S*Rb), be calculated ionic conductivity, wherein d be the thickness of polymer dielectric film, S be polymer electrolytic
Matter dielectric film and the contact area of electrode.
Embodiment two: the preparation method of the present embodiment fluoropolymer electrolyte II is implemented according to the following steps:
One, under inert nitrogen gas protection atmosphere, it is that 1:2 is by 0.687g sodium p styrene sulfonate and 4.535g according to mol ratio
Polyethylene glycol methacrylate-styrene polymer joins in 40mLDMF solvent, is subsequently adding initiator azodiisobutyronitrile 50mg,
Add 0.375ml Hexafluorobutyl mathacrylate after reacting 10 minutes at a temperature of 80 DEG C, add ethylene carbonate Asia second
Ester 0.171ml, then proceedes to react 20 minutes and obtains polymerizate；
Two, polymerizate is cast in Teflon mould, process with 80 DEG C of drying and forming-films under vacuum and obtain
Fluoropolymer electrolyte II.
Poly (sodium 4-styrenesulfonate)-polyethylene glycol methacrylate-styrene polymer that the present embodiment prepares-methacrylic acid hexafluoro fourth
Ester-vinylethylene carbonate Electrolyte film thickness is 12mm, and electrical conductivity is 1.25 × 10-6S·cm-1, its fracture strength is
1.38MPa。
Embodiment three: the preparation method of the present embodiment fluoropolymer electrolyte III is implemented according to the following steps:
One, the polymerizate obtained by step one in embodiment one carries out lithium salts displacement in joining lithium salts (LiCl) solution,
Solution after being replaced；
Two, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Three, the polymer dielectric being dried step 2 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte film III.
Poly-p styrene sulfonic acid lithium-polyethylene glycol methacrylate-styrene polymer-methacrylic acid hexafluoro fourth that the present embodiment prepares
Ester Electrolyte film thickness is 10mm, and electrical conductivity is 8.32 × 10-6S·cm-1。
Embodiment four: the preparation method of the present embodiment fluoropolymer electrolyte IV is implemented according to the following steps:
One, the polymerizate obtained by step one in embodiment two joins and carries out lithium salts displacement in lithium salt solution, is replaced
After solution；
Two, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Three, the polymer dielectric being dried step 2 obtained is dissolved in DMF, then casts in
In Teflon mould, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte film IV.
Poly-p styrene sulfonic acid lithium-polyethylene glycol methacrylate-styrene polymer-methacrylic acid hexafluoro fourth that the present embodiment prepares
Ester-vinylethylene carbonate Electrolyte film thickness is 10mm, and electrical conductivity is 8.49 × 10-6S·cm-1。
Claims (10)
1. fluoropolymer electrolyte, it is characterised in that the chemical structural formula of this fluoropolymer electrolyte is as follows:
Wherein X represents Na or Li.
2. the preparation method of fluoropolymer electrolyte, it is characterised in that be to realize according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds methyl after reacting 10 minutes at a temperature of 70～80 DEG C
Hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte I；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
3. the preparation method of fluoropolymer electrolyte, it is characterised in that be to realize according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds methyl after reacting 10 minutes at a temperature of 70～80 DEG C
Hexafluorobutyl acrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, casting in Teflon mould by polymerizate, drying and forming-film processes and obtains fluoropolymer electrolyte II；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, vinylethylene carbonate
Account for the 10%～15% of total reactant molar content.
4. the preparation method of fluoropolymer electrolyte, it is characterised in that be to realize according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds methyl after reacting 10 minutes at a temperature of 70～80 DEG C
Hexafluorobutyl acrylate, continues reaction 15～30 minutes, obtains polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then join in lithium salt solution by polymerizate
Row lithium salts is replaced, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in poly-
In Teflon mold, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte III；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～30% of total reactant molar content.
5. the preparation method of fluoropolymer electrolyte, it is characterised in that be to realize according to the following steps:
One, under inert gas shielding atmosphere, it is that 1:1～3 is by sodium p styrene sulfonate and Polyethylene Glycol methyl according to mol ratio
Acrylate joins in solvent, is subsequently adding initiator, adds methyl after reacting 10 minutes at a temperature of 70～80 DEG C
Hexafluorobutyl acrylate and vinylethylene carbonate, continue reaction 15～30 minutes, obtain polymerizate；
Two, LiCl is joined in deionized water, obtain lithium salt solution, then join in lithium salt solution by polymerizate
Row lithium salts is replaced, the solution after being replaced；
Three, dialysing the solution after displacement, then be placed on dried in vacuum drying oven through purging, obtain being dried is poly-
Polymer electrolyte；
Four, the polymer dielectric being dried step 3 obtained is dissolved in DMF, then casts in poly-
In Teflon mold, removing solvent at 40 DEG C, drying and forming-film processes and obtains fluoropolymer electrolyte IV；
Wherein in step one, Hexafluorobutyl mathacrylate accounts for the 10%～15% of total reactant molar content, vinylethylene carbonate
Account for the 10%～15% of total reactant molar content.
6. according to the preparation method of the fluoropolymer electrolyte described in any one of claim 2 to 5, it is characterised in that step
Solvent in one is deionized water, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide or N, N-dimethyl pyrrolidone.
7. according to the preparation method of the fluoropolymer electrolyte described in claim 2 to 5, it is characterised in that in step one
Initiator is Ammonium persulfate., potassium peroxydisulfate, benzoyl peroxide or azodiisobutyronitrile.
8. according to the preparation method of the fluoropolymer electrolyte described in claim 4 or 5, it is characterised in that lithium in step 2
The concentration of saline solution is 0.5g/mL.
9. according to the preparation method of the fluoropolymer electrolyte described in any one of claim 2 to 5, it is characterised in that be dried
The thickness of the fluoropolymer electrolyte that film forming obtains is 0.5～20mm.
10. the application of the fluoropolymer electrolyte as described in claim 4 or 5, it is characterised in that by fluoropolymer electricity
Solve matter as the electrolyte in all-solid lithium-ion battery.
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| CN109004280A (en) * | 2018-07-11 | 2018-12-14 | 珠海光宇电池有限公司 | A kind of preparation method and full solid state polymer battery of full solid state polymer electrolyte |
| CN109326822A (en) * | 2018-11-05 | 2019-02-12 | 珠海光宇电池有限公司 | A kind of preparation method and lithium ion battery of all solid state fluoropolymer electrolyte film |
| CN109509911A (en) * | 2018-11-05 | 2019-03-22 | 珠海光宇电池有限公司 | A kind of preparation method and lithium ion battery of fluoro object gel polymer electrolyte film |
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| CN112382788B (en) * | 2020-09-08 | 2022-04-12 | 合肥国轩高科动力能源有限公司 | Single-ion conductive polymer electrolyte and preparation method and application thereof |
| CN112979873A (en) * | 2021-02-19 | 2021-06-18 | 昆山宝创新能源科技有限公司 | Multi-copolymerized single ion polymer electrolyte and preparation method and application thereof |
| CN112979873B (en) * | 2021-02-19 | 2022-11-22 | 昆山宝创新能源科技有限公司 | Multi-copolymerized single ion polymer electrolyte and preparation method and application thereof |
| CN115810802A (en) * | 2021-09-14 | 2023-03-17 | 天津大学 | Fluoropolymer solid in-situ high-voltage battery technology |
| CN114566699A (en) * | 2022-01-15 | 2022-05-31 | 西安理工大学 | Novel fluorine-containing composite lithium ion solid electrolyte and preparation method thereof |
| CN114566699B (en) * | 2022-01-15 | 2024-02-27 | 西安理工大学 | Fluorine-containing composite lithium ion solid electrolyte and preparation method thereof |
| CN114927692A (en) * | 2022-05-30 | 2022-08-19 | 远景动力技术(江苏)有限公司 | Binder for negative electrode material and electrochemical device |
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