CN103680964A - Polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte as well as preparation method and application thereof - Google Patents
Polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to a polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte which comprises a polyvinylidene fluoride-hexafluoropropylene-based gel polymer film and an ionic liquid electrolyte, wherein the ionic liquid electrolyte is evenly dispersed in the polyvinylidene fluoride-hexafluoropropylene-based gel polymer film. The polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte has the advantages of good electrochemical performance, high safety and environmental friendliness, and can be used for manufacturing super capacitors. Furthermore, the invention further relates to a preparation method of the polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte, and a super capacitor adopting the polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte.
Description
Technical field
The present invention relates to gel polymer electrolyte field, particularly relate to a kind of Kynoar-hexafluoropropylene base gel polymer electrolyte and its preparation method and application.
Background technology
Ultracapacitor is a kind of novel energy device between rechargeable battery and capacitor, have that volume is little, capacity is large, charging rate is fast, have extended cycle life, the advantage such as discharging efficiency is high, operating temperature range is wide, good reliability, contaminant-free maintenance-free, can be used as a kind of novel, efficient, practical energy accumulating device, thereby be widely used in the AC-battery power source field of military affairs, mobile communication, computer and electric automobile.
The electrolyte of ultracapacitor work is divided into aqueous electrolyte and organic liquid electrolyte.The decomposition voltage of aqueous electrolyte is low, thereby studies less.Although organic liquid electrolyte has advantages of that conductivity is high, but the organic solvent in organic liquid electrolyte is inflammable, volatile, in charge and discharge process, discharge fuel gas, particularly under some unconventional condition of work, (as high-power, discharge and recharge, super-charge super-discharge etc.) produces the generation that gas is accelerated in large calorimetric meeting, cause inner pressure of battery to increase, Leakage Gas, blast even on fire, thereby there is serious potential safety hazard.
Summary of the invention
Based on this, be necessary the Kynoar-hexafluoropropylene base gel polymer electrolyte that provides a kind of fail safe good.
A kind of Kynoar-hexafluoropropylene base gel polymer electrolyte, comprise Kynoar-hexafluoropropylene base gelatin polymer film and be dispersed in the il electrolyte in described Kynoar-hexafluoropropylene base gelatin polymer film, wherein, described il electrolyte is the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl propyl sulfonium tetrafluoroborate or dimethylbutyl sulfonium tetrafluoroborate.
In an embodiment, the thickness of described Kynoar-hexafluoropropylene base gelatin polymer film is 0.1 ~ 0.3mm therein.
This Kynoar-hexafluoropropylene base gel polymer electrolyte intermediate ion liquid electrolyte is dispersed in Kynoar-hexafluoropropylene base gelatin polymer film, thereby overcome traditional organic liquid electrolyte, has the problem of potential safety hazard and environmental pollution because of organic solvent volatilization and leakage; Kynoar-hexafluoropropylene base gelatin polymer film is large to the uptake of il electrolyte simultaneously, thereby this Kynoar-hexafluoropropylene base gel polymer electrolyte has high conductance, be arranged on ultracapacitor, the ratio electric capacity of ultracapacitor is also higher.Therefore, this Kynoar-hexafluoropropylene base gel polymer electrolyte has good chemical property, the good and environmental friendliness of fail safe.
Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte, comprises the steps:
The ratio that is 1:12 ~ 1:4 according to the mass ratio of Kynoar-hexafluoropropylene and organic solvent is dissolved in described Kynoar-hexafluoropropylene in organic solvent, stirs, and obtains Kynoar-hexafluoropropylene polymer solution;
Adopt electrical spinning method that described Kynoar-hexafluoropropylene polymer solution is injected on collecting board, after vacuumize, obtain Kynoar-hexafluoropropylene base gelatin polymer film;
Described Kynoar-hexafluoropropylene base gelatin polymer film is immersed in il electrolyte, wherein, described il electrolyte be the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, dimethyl propyl sulfonium tetrafluoroborate or the carbonic allyl ester solution of dimethylbutyl sulfonium tetrafluoroborate;
Described Kynoar-hexafluoropropylene base gelatin polymer film after il electrolyte immersion treatment is taken out, and remove the il electrolyte on described Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain described Kynoar-hexafluoropropylene base gel polymer electrolyte.
In an embodiment, the molecular weight of described Kynoar-hexafluoropropylene is 300000 ~ 800000 therein.
In an embodiment, described organic solvent is 1-METHYLPYRROLIDONE, DMF, acetonitrile or ethanol therein.
In an embodiment, the concentration of described il electrolyte is 0.5 ~ 1.5mol/L therein.
In an embodiment, be also included in il electrolyte immersion treatment and before described Kynoar-hexafluoropropylene base gelatin polymer film be cut into the step of disk therein.
In an embodiment, the diameter of described disk is 12mm therein.
This Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte, compound by Kynoar-hexafluoropropylene base gelatin polymer film that il electrolyte and electrical spinning method are prepared, thus Kynoar-hexafluoropropylene base gel polymer electrolyte obtained.Said method technique Kynoar-hexafluoropropylene base gel polymer electrolyte simple, that prepare has good chemical property, can be applied in ultracapacitor.
As a kind of ultracapacitor, comprise positive plate, negative plate and the polyacrylonitrile-radical gel polymer electrolyte between described positive plate and described negative plate, described Kynoar-hexafluoropropylene base gel polymer electrolyte comprises Kynoar-hexafluoropropylene base gelatin polymer film and is dispersed in the il electrolyte in described Kynoar-hexafluoropropylene base gelatin polymer film, wherein, described il electrolyte is the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl propyl sulfonium tetrafluoroborate or dimethylbutyl sulfonium tetrafluoroborate.
In an embodiment, the thickness of described Kynoar-hexafluoropropylene base gelatin polymer film is 0.1 ~ 0.3mm therein.
This ultracapacitor adopts Kynoar-hexafluoropropylene base gel polymer electrolyte to substitute traditional organic liquid electrolyte, overcome organic liquid electrolyte and had the problem of potential safety hazard and environmental pollution because of organic solvent volatilization and leakage; Kynoar-hexafluoropropylene base gelatin polymer film is large to the uptake of il electrolyte simultaneously, thereby this Kynoar-hexafluoropropylene base gel polymer electrolyte has high conductance, and the ratio electric capacity of ultracapacitor is also higher.
Accompanying drawing explanation
Fig. 1 is the flow chart of Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte of an execution mode.
Embodiment
Below in conjunction with drawings and the specific embodiments, Kynoar-hexafluoropropylene base gel polymer electrolyte and its preparation method and application is further detailed.
Kynoar-hexafluoropropylene base gel polymer electrolyte of one execution mode, comprises Kynoar-hexafluoropropylene base gelatin polymer film and il electrolyte.Il electrolyte is dispersed in Kynoar-hexafluoropropylene base gelatin polymer film.Wherein, il electrolyte be the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, dimethyl propyl sulfonium tetrafluoroborate or the carbonic allyl ester solution of dimethylbutyl sulfonium tetrafluoroborate; The thickness of Kynoar-hexafluoropropylene base gelatin polymer film is 0.1 ~ 0.3mm.
The il electrolyte of above-mentioned Kynoar-hexafluoropropylene base gel polymer electrolyte is dispersed in Kynoar-hexafluoropropylene base gelatin polymer film, thereby overcome traditional organic liquid electrolyte, has the problem of potential safety hazard and environmental pollution because of organic solvent volatilization and leakage; Kynoar-hexafluoropropylene base gelatin polymer film is large to the uptake of il electrolyte simultaneously, thereby this Kynoar-hexafluoropropylene base gel polymer electrolyte has high conductivity.Therefore, this Kynoar-hexafluoropropylene base gel polymer electrolyte has good chemical property, the good and environmental friendliness of fail safe.
In addition, also provide in the present embodiment a kind of Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte, as shown in Figure 1, comprise the steps:
Step S110, the ratio that is 1:12 ~ 1:4 according to the mass ratio of Kynoar-hexafluoropropylene and organic solvent is dissolved in Kynoar-hexafluoropropylene in organic solvent, at 30 ~ 50 ℃, stirs, and obtains Kynoar-hexafluoropropylene polymer solution.
Wherein, the molecular weight of Kynoar-hexafluoropropylene is 300000 ~ 800000.
Organic solvent is 1-METHYLPYRROLIDONE, DMF, acetonitrile or ethanol.
Step S120, adopts electrical spinning method that Kynoar-hexafluoropropylene polymer solution is injected on collecting board, after being dried, obtains Kynoar-hexafluoropropylene base gelatin polymer film under the vacuum condition of 80 ~ 100 ℃.
In the present embodiment, in Electrospun process, the model of electric spinning machine is BGG4-21.Adopt electrical spinning method that Kynoar-hexafluoropropylene gelatin polymer is injected in the process of collecting board, the running parameter of electric spinning machine is: the distance between spinning head and collecting board is 15cm, spinning voltage is 12KV, and the flow of Kynoar-hexafluoropropylene gelatin polymer is 0.5-2.0mL/h.
In the present embodiment, vacuum condition is 0.01MPa vacuum condition, and certainly in actual applications, vacuum degree is more high better.
Application for convenience of follow-up Kynoar-hexafluoropropylene base gel polymer electrolyte, after obtaining Kynoar-hexafluoropropylene base gelatin polymer film, can be cut into disk by Kynoar-hexafluoropropylene base gelatin polymer film.The size of disk can be determined according to practical application.The diameter of disk is 12mm in the present embodiment.
Step S130, is immersed in Kynoar-hexafluoropropylene base gelatin polymer film in il electrolyte.
Wherein, il electrolyte be concentration be the acetonitrile solution of the dimethyl ethyl sulfonium tetrafluoroborate of 0.5 ~ 1.5mol/L, the acetonitrile solution of the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, dimethyl propyl sulfonium tetrafluoroborate or the carbonic allyl ester solution of dimethylbutyl sulfonium tetrafluoroborate.
Step S140, take out the Kynoar-hexafluoropropylene base gelatin polymer film after ionic liquid immersion treatment, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
In the present embodiment, adopt filter paper to blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface.Be appreciated that except filter paper, can also adopt other material to blot il electrolyte.
Above-mentioned Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte, compound by Kynoar-hexafluoropropylene base gelatin polymer film that il electrolyte and Electrospinning Method are prepared, thus Kynoar-hexafluoropropylene base gel polymer electrolyte obtained.Said method technique Kynoar-hexafluoropropylene base gel polymer electrolyte simple, that prepare has good chemical property, can be applied in ultracapacitor.
In addition, also provide in the present embodiment a kind of ultracapacitor.This ultracapacitor comprises positive plate, negative plate and the above-mentioned polyacrylonitrile-radical gel polymer electrolyte between positive plate and negative pole.
In the present embodiment, the preparation process of ultracapacitor is specially: the Kynoar-hexafluoropropylene base gel polymer electrolyte film that is 0.1 ~ 0.3mm by thickness is placed between positive plate and negative plate, on stamping machine, seals, and makes ultracapacitor.
Positive plate and negative plate can be Graphene material or active carbon material, can be also other arbitrarily reasonably materials.
Above-mentioned ultracapacitor adopts Kynoar-hexafluoropropylene base gel polymer electrolyte to substitute traditional organic liquid electrolyte, overcome organic liquid electrolyte and had the problem of potential safety hazard and environmental pollution because of organic solvent volatilization and leakage; Kynoar-hexafluoropropylene base gelatin polymer film is large to the uptake of il electrolyte simultaneously, thereby this Kynoar-hexafluoropropylene base gel polymer electrolyte has high conductance, and the ratio electric capacity of ultracapacitor is also higher.
Below in conjunction with specific embodiment, Kynoar-hexafluoropropylene base gel polymer electrolyte and its preparation method and application is described, with and the test of the aspect such as performance.
Embodiment 1
Kynoar-the hexafluoropropylene that is 500000 by 10g molecular weight is dissolved in 90g 1-METHYLPYRROLIDONE, at 40 ℃, stirs, and obtains Kynoar-hexafluoropropylene solution.
Adopt electrical spinning method that Kynoar-hexafluoropropylene polymer solution is injected on collecting board, the thickness that control is deposited on the Kynoar-hexafluoropropylene gelatin polymer film on collecting board is 0.20mm, then Kynoar-hexafluoropropylene gelatin polymer film is cut into the disk that diameter is 12mm, and by the disk obtaining dry 36h under the 0.01MPa vacuum condition of 100 ℃.Wherein, the model of Electrospun machine used is BGG4-21, and the running parameter of Electrospun machine is: the distance between spinning head and collecting board is 15cm, and spinning voltage is 12KV, and the flow of Kynoar-hexafluoropropylene gelatin polymer is 1.0mL/h.
Disk after above-mentioned vacuum drying treatment is immersed in to 30min in the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate that concentration is 1.0mol/L; Take out the Kynoar-hexafluoropropylene base gelatin polymer film after soaking, with filter paper, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
Embodiment 2
Kynoar-the hexafluoropropylene that is 300000 by 10g molecular weight is dissolved in 40g acetonitrile, at 30 ℃, stirs, and obtains Kynoar-hexafluoropropylene solution.
Adopt electrical spinning method that Kynoar-hexafluoropropylene polymer solution is injected on collecting board, the thickness that control is deposited on the Kynoar-hexafluoropropylene gelatin polymer film on collecting board is 0.10mm, then Kynoar-hexafluoropropylene gelatin polymer film is cut into the disk that diameter is 12mm, and by the disk obtaining dry 12h under the 0.01MPa vacuum condition of 80 ℃.Wherein, the model of Electrospun machine used is BGG4-21, and the running parameter of Electrospun machine is: the distance between spinning head and collecting board is 15cm, and spinning voltage is 12KV, and the flow of Kynoar-hexafluoropropylene gelatin polymer is 0.5mL/h.
Disk after above-mentioned vacuum drying treatment is immersed in to 60min in the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate that concentration is 0.5mol/L; Take out the Kynoar-hexafluoropropylene base gelatin polymer film after soaking, with filter paper, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
Embodiment 3
Kynoar-the hexafluoropropylene that is 450000 by 10g molecular weight is dissolved in 120g ethanol, at 45 ℃, stirs, and obtains Kynoar-hexafluoropropylene solution.
Adopt electrical spinning method that Kynoar-hexafluoropropylene polymer solution is injected on collecting board, the thickness that control is deposited on the Kynoar-hexafluoropropylene gelatin polymer film on collecting board is 0.15mm, then Kynoar-hexafluoropropylene gelatin polymer film is cut into the disk that diameter is 12mm, and by the disk obtaining dry 24h under the 0.01MPa vacuum condition of 80 ℃.Wherein, the model of Electrospun machine used is BGG4-21, and the running parameter of Electrospun machine is: the distance between spinning head and collecting board is 15cm, and spinning voltage is 12KV, and the flow of Kynoar-hexafluoropropylene gelatin polymer is 1.5mL/h.
Disk after above-mentioned vacuum drying treatment is immersed in to 40min in the acetonitrile solution of dimethylbutyl sulfonium tetrafluoroborate that concentration is 1.5mol/L; Take out the Kynoar-hexafluoropropylene base gelatin polymer film after soaking, with filter paper, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
Embodiment 4
Kynoar-the hexafluoropropylene that is 800000 by 10g molecular weight is dissolved in 60g DMF, at 50 ℃, stirs, and obtains Kynoar-hexafluoropropylene solution.
Adopt electrical spinning method that Kynoar-hexafluoropropylene polymer solution is injected on collecting board, the thickness that control is deposited on the Kynoar-hexafluoropropylene gelatin polymer film on collecting board is 0.30mm, then Kynoar-hexafluoropropylene gelatin polymer film is cut into the disk that diameter is 12mm, and by the disk obtaining dry 48h under the 0.01MPa vacuum condition of 90 ℃.Wherein, the model of Electrospun machine used is BGG4-21, and the running parameter of Electrospun machine is: the distance between spinning head and collecting board is 15cm, and spinning voltage is 12KV, and the flow of Kynoar-hexafluoropropylene gelatin polymer is 2.0mL/h.
Disk after above-mentioned vacuum drying treatment is immersed in to 60min in the carbonic allyl ester solution of dimethylbutyl sulfonium tetrafluoroborate that concentration is 1.2mol/L; Take out the Kynoar-hexafluoropropylene base gelatin polymer film after soaking, with filter paper, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
Comparative example
Kynoar-the hexafluoropropylene that is 500000 by 10g molecular weight is dissolved in 90g 1-METHYLPYRROLIDONE, at 40 ℃, stirs, and obtains uniform slurry.The slurry obtaining is coated on clean glass plate equably, obtain Kynoar-hexafluoropropylene gelatin polymer film of the about 0.2mm of thickness, then Kynoar-hexafluoropropylene gelatin polymer film is cut into the disk that diameter is 12mm, and under 100 ℃, 0.01MPa vacuum dry 36h.
Disk after above-mentioned vacuum drying treatment is immersed in to 30min in the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate that concentration is 1.0mol/L; Take out the Kynoar-hexafluoropropylene base gelatin polymer film after soaking, with filter paper, blot the il electrolyte on Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain Kynoar-hexafluoropropylene base gel polymer electrolyte.
Embodiment 5
Kynoar-hexafluoropropylene base gel electrolyte that the various embodiments described above and comparative example are made is assembled into ultracapacitor: (specific area of Graphene is about 1000m to take the mixture of 9g Graphene and carbon nano-tube
2/ g, the mass ratio of Graphene and carbon nano-tube is 10:1), 0.35g acetylene black and 0.50g Kynoar (PVDF), and add 70g 1-METHYLPYRROLIDONE (NMP), fully stir into the slurry mixing.
By slurry blade coating, on the aluminium foil cleaning through ethanol, under the vacuum of 0.01MPa, 100 ℃ are dried to constant weight, and are pressed into Graphene electrodes in 10MPa pressure lower roll, and are cut into electrode slice.
Above-mentioned Kynoar-hexafluoropropylene base gel polymer electrolyte that prepared is placed between two Graphene electrodes sheets, and on stamping machine, button capacitor is made in sealing.
Utilize charge-discharge test instrument to carry out constant current charge-discharge test to the ultracapacitor assembling in the present embodiment, in the electrochemical window of 0 ~ 2.7V, with the electric current of 1A/g, record than capacitance data as following table 1:
Table 1
| Embodiment | 1 | 2 | 3 | 4 | Comparative example |
| Than electric capacity (F/g) | 137 | 115 | 130 | 126 | 110 |
As can be seen from the table, the prepared gel polymer electrolyte of the various embodiments described above can be suitable for the electrolyte of ultracapacitor, and in the electrochemical window of 2.7V, has better capacitance characteristic.In addition, the gel polymer electrolyte of preparing by electrical spinning method is compared with the embrane method that is cast in comparative example, and its capacitor assembling has better than electric capacity.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. Kynoar-hexafluoropropylene base gel polymer electrolyte, it is characterized in that, comprise Kynoar-hexafluoropropylene base gelatin polymer film and be dispersed in the il electrolyte in described Kynoar-hexafluoropropylene base gelatin polymer film, wherein, described il electrolyte is the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl propyl sulfonium tetrafluoroborate or dimethylbutyl sulfonium tetrafluoroborate.
2. Kynoar-hexafluoropropylene base gel polymer electrolyte according to claim 1, is characterized in that, the thickness of described Kynoar-hexafluoropropylene base gelatin polymer film is 0.1 ~ 0.3mm.
3. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte, is characterized in that, comprises the steps:
The ratio that is 1:12 ~ 1:4 according to the mass ratio of Kynoar-hexafluoropropylene and organic solvent is dissolved in described Kynoar-hexafluoropropylene in organic solvent, stirs, and obtains Kynoar-hexafluoropropylene polymer solution;
Adopt electrical spinning method that described Kynoar-hexafluoropropylene polymer solution is injected on collecting board, after vacuumize, obtain Kynoar-hexafluoropropylene base gelatin polymer film;
Described Kynoar-hexafluoropropylene base gelatin polymer film is immersed in il electrolyte, wherein, described il electrolyte be the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, dimethyl propyl sulfonium tetrafluoroborate or the carbonic allyl ester solution of dimethylbutyl sulfonium tetrafluoroborate;
Described Kynoar-hexafluoropropylene base gelatin polymer film after il electrolyte immersion treatment is taken out, and remove the il electrolyte on described Kynoar-hexafluoropropylene base gelatin polymer film surface, obtain described Kynoar-hexafluoropropylene base gel polymer electrolyte.
4. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte according to claim 3, is characterized in that, the molecular weight of described Kynoar-hexafluoropropylene is 300000 ~ 800000.
5. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte according to claim 3, is characterized in that, described organic solvent is 1-METHYLPYRROLIDONE, DMF, acetonitrile or ethanol.
6. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte according to claim 3, is characterized in that, the concentration of described il electrolyte is 0.5 ~ 1.5mol/L.
7. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte according to claim 3, it is characterized in that, be also included in il electrolyte immersion treatment and before described Kynoar-hexafluoropropylene base gelatin polymer film be cut into the step of disk.
8. Kynoar-hexafluoropropylene base method for preparing gel polymer electrolyte according to claim 7, is characterized in that, the diameter of described disk is 12mm.
9. a ultracapacitor, is characterized in that, comprises positive plate, negative plate and the polyacrylonitrile-radical gel polymer electrolyte between described positive plate and described negative plate, described Kynoar-hexafluoropropylene base gel polymer electrolyte comprises Kynoar-hexafluoropropylene base gelatin polymer film and is dispersed in the il electrolyte in described Kynoar-hexafluoropropylene base gelatin polymer film, wherein, described il electrolyte is the acetonitrile solution of dimethyl ethyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethyl propyl sulfonium tetrafluoroborate, the acetonitrile solution of dimethylbutyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of dimethyl ethyl sulfonium tetrafluoroborate, the carbonic allyl ester solution of the carbonic allyl ester solution of dimethyl propyl sulfonium tetrafluoroborate or dimethylbutyl sulfonium tetrafluoroborate.
10. ultracapacitor according to claim 9, is characterized in that, the thickness of described Kynoar-hexafluoropropylene base gelatin polymer film is 0.1 ~ 0.3mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916453A (en) * | 2015-04-17 | 2015-09-16 | 浙江大学 | Coaxial graphene fiber supercapacitor and manufacturing method thereof |
| CN108335922A (en) * | 2018-01-20 | 2018-07-27 | 深圳清华大学研究院 | Dielectric film and preparation method thereof, the capacitor using it |
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2012
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916453A (en) * | 2015-04-17 | 2015-09-16 | 浙江大学 | Coaxial graphene fiber supercapacitor and manufacturing method thereof |
| CN108335922A (en) * | 2018-01-20 | 2018-07-27 | 深圳清华大学研究院 | Dielectric film and preparation method thereof, the capacitor using it |
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Application publication date: 20140326 |