CN105990041A - Supercapacitor composite separator material of enhanced heat resistance through barium oxide - Google Patents
Supercapacitor composite separator material of enhanced heat resistance through barium oxide Download PDFInfo
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- CN105990041A CN105990041A CN201610055351.1A CN201610055351A CN105990041A CN 105990041 A CN105990041 A CN 105990041A CN 201610055351 A CN201610055351 A CN 201610055351A CN 105990041 A CN105990041 A CN 105990041A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
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- 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
- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses supercapacitor composite separator material of enhanced heat resistance through barium oxide. The supercapacitor composite separator material is prepared by the raw material of the following parts by weight: 35-40 parts of polyvinyl alcohol fiber, 33-35 parts of mekralon, 10-13 parts of polyacrylonitrile powder, 30-32 parts of acetone, 72-75 parts of N,N-dimethyl formamide, 8-10 parts of water soluble PVA fiber of 70 DEG C, 4-5 parts of agar, 3-4 parts of modified starch, 12-14 parts of barium oxide, 7-8.5 parts of aluminum silicate fiber, 2-3 parts of potassium hexatitanate whiskers, 0.8-1 part of tetrabutyl titanate, 4-5 parts of ethanol solution of which the concentration is 75%wt and 1.5-2 parts of polyoxyethylene dehydration sorbitan monooleate. Barium oxide, aluminum silicate fiber and other components are added to act as reinforcing fillers and form adhesive paste with other components together to manufacture base nonwoven fabric so that the heat resistance of the product can be greatly increased, the wear resistance can be enhanced, and the tensile strength is high and the dielectric constant is large.
Description
Technical field
The present invention relates to capacitor diaphragm technical field, particularly relate to a kind of barium monoxide and strengthen the ultracapacitor composite diaphragm material of heat resistance.
Background technology
Ultracapacitor is the accumulator of a kind of great market competitiveness, owing to it can realize quick charge, heavy-current discharge, and has the charge lifetimes of more than 100,000 times, needs to occupy critical role in the application of high-multiplying power discharge in short-term at some.The extensive of this Novel energy storage apparatus of ultracapacitor is paid attention in also result in worldwide by hybrid vehicle and the requirement to electrical source of power for the electric automobile.In the composition of ultracapacitor, electrode, electrolyte and the diaphragm paper performance on ultracapacitor plays conclusive impact.The electrode of current ultracapacitor and electrolyte are the focuses of research, but people are not high for research and the attention rate of barrier film.
The diaphragm paper of ultracapacitor is positioned between two porous carbon electrodes, and complete wetting is in the electrolytic solution together with electrode, plays the effect of isolation during repeated charge, stops electronics conduction, prevents from contacting the internal short-circuit causing between the two poles of the earth.This requires the insulator that diaphragm material is electronics, has good isolation performance, and its hole should be as far as possible less than the minimum grain size of electrode active surface material.The necessary aperture of the preferable diaphragm paper of isolation performance is little, the circulation of electrolyte so can be made to decline, battery charging and discharging hydraulic performance decline；And electrolyte to be impregnated with rate higher, ion is more more by the good diaphragm material often hole of property, easily causes and contacts the internal short-circuit causing between the two poles of the earth.The maximum advantage of ultracapacitor be charge/discharge rates fast, can be with high power discharge, therefore, diaphragm material will thinner towards thickness, porosity is higher, aperture is less and the contour performance trend development that is more evenly distributed.
The material being currently used for diaphragm of supercapacitor mainly has cellulosic separator paper and conventional batteries barrier film, and High-performance diaphragm paper manufactures technical difficulty, and price is high；Conventional batteries membrane thicknesses is thicker, and porosity is low, and to electrolyte compatibility difference, and electrostatic spinning nano fiber film manufacturing technology is simple, low cost, and barrier film porosity is up to 90%, good to electrolyte compatibility, but a disadvantage is that intensity is not high.If cellulosic separator paper can be combined with electrospun fibers film, learning from other's strong points to offset one's weaknesses, low cost, the composite diaphragm material that porosity is high, intensity is big can be obtained.
Content of the invention
The object of the invention is contemplated to make up the defect of prior art, provides a kind of barium monoxide to strengthen the ultracapacitor composite diaphragm material of heat resistance.
The present invention is achieved by the following technical solutions:
A kind of barium monoxide strengthens the ultracapacitor composite diaphragm material of heat resistance, it is prepared by the raw materials in: vinal 35-40, polypropylene fibre 33-35, polyacrylonitrile powder 10-13, acetone 30-32, DMF 72-75,70 DEG C of water-soluble PVA fiber 8-10, agar 4-5, converted starch 3-4, barium monoxide 12-14, alumina silicate fibre 7-8.5, crystal whisker of hexa potassium titanate 2-3, butyl titanate 0.8-1, concentration are the ethanol solution 4-5 of 75%wt, polyoxyethylene sorbitan monooleate 1.5-2.
According to claims 1, a kind of barium monoxide strengthens the ultracapacitor composite diaphragm material of heat resistance, is prepared from by following concrete grammar:
(1) by acetone and N, dinethylformamide mixes at normal temperatures, add polyacrylonitrile powder, stir 3 hours with the speed of 100 revs/min at normal temperatures, form polyacrylonitrile spinning solution, receiving range be 20cm, voltage be that 25kV, feed flow speed carry out electrostatic spinning 2 hours under conditions of being 1mL/h, spin out the polyacrylonitrile nanofiber film that thickness is 10 μm stand-by；
(2) polypropylene fibre is mixed with vinal, add appropriate water, put in beater, carry out being dispersed into fibrous suspension by 2% concentration, add 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until 70 DEG C of water-soluble PVA fibers to be completely dissolved formation mixing suspension stand-by；
(3) alumina silicate fibre is mixed with crystal whisker of hexa potassium titanate, pulverized 200 mesh sieves, butyl titanate is dissolved in the ethanol solution that concentration is 75%wt, add above-mentioned 200 mesh powder afterwards, be then placed in ball mill, be heated to 60 DEG C of mixing and ball milling 60 minutes, cold go to room temperature to pour out stand-by；Converted starch will add the water of 10 times amount, it is heated to while stirring being pasted completely, continuously add agar, it is heated to 100 DEG C, stirring to agar liquefaction, add barium monoxide and above-mentioned ball milling afterproduct, put in high speed mixer, stir 15 minutes with the speed of 1000 revs/min, be finally spray-dried, obtain reinforcer；
(4) mixing suspension that will obtain in step (2) adds step (3) reinforcer that obtains and remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, form the slurry that online concentration is 0.1wt%, use wet therapy forming process that above-mentioned slurry is sent into paper machine through wet end and press section drainage and formation, then electricity consumption hot blast is dried 10 minutes, then it is stand-by to use hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C；
(5) the polyacrylonitrile nanofiber film obtaining step (1) covers on the non-weaving cloth base fabric that step (4) obtains, and carries out hot binding by the hot-rollings of 135 DEG C, shears, is packaged to be the present invention after cooling.
The invention have the advantage that first polyacrylonitrile is carried out electrostatic spinning and make polyacrylonitrile nanofiber film by the present invention, then vinal is utilized to mix with polypropylene fibre, wet nonwoven fabrics technique is used to make non-weaving cloth, both are well bonded together by way of hot pressing, intensity height, the performance of good permeability can be obtained, and preferably control aperture and the distribution of diaphragm material, aperture less is more evenly distributed, porosity high, it is thus possible to be preferably impregnated with electrolyte so that discharge current is evenly；70 DEG C of water-soluble PVA fibers of interpolation are as reinforcing agent simultaneously, and the composite diaphragm material made also has preferable tensile strength, chemical stability, and fluidity and isolation performance are protected in imbibition.
The present invention adds the composition such as barium monoxide, alumina silicate fibre as reinforcer, it is collectively forming the slurry of viscosity with other compositions, make non-weaving cloth base fabric, considerably increase the heat resistance of product, improve wearability, tensile strength is high simultaneously, and dielectric constant is big, and the composite diaphragm material made not only technique is simple, it is easy to Industry Control, additionally it is possible to improve capacitance and the low cost of ultracapacitor.
Detailed description of the invention
A kind of barium monoxide strengthens the ultracapacitor composite diaphragm material of heat resistance, it is made up of the raw material of following weight portion (kilogram): vinal the 35th, polypropylene fibre the 33rd, polyacrylonitrile powder the 10th, acetone the 30th, DMF the 72nd, 70 DEG C of water-soluble PVA fiber the 8th, agar the 4th, converted starch the 3rd, barium monoxide the 12nd, alumina silicate fibre the 7th, crystal whisker of hexa potassium titanate the 2nd, butyl titanate the 0.8th, concentration is ethanol solution the 4th, polyoxyethylene sorbitan monooleate 1.5 of 75%wt.
According to claims 1, a kind of barium monoxide strengthens the ultracapacitor composite diaphragm material of heat resistance, is prepared from by following concrete grammar:
(1) by acetone and N, N-dimethylformamide mixes at normal temperatures, add polyacrylonitrile powder, stir 3 hours with the speed of 100 revs/min at normal temperatures, form polyacrylonitrile spinning solution, receiving range be 20cm, voltage be that 25kV, feed flow speed carry out electrostatic spinning 2 hours under conditions of being 1mL/h, spin out the polyacrylonitrile nanofiber film that thickness is 10 μm stand-by；
(2) polypropylene fibre is mixed with vinal, add appropriate water, put in beater, carry out being dispersed into fibrous suspension by 2% concentration, add 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until 70 DEG C of water-soluble PVA fibers to be completely dissolved formation mixing suspension stand-by；
(3) alumina silicate fibre is mixed with crystal whisker of hexa potassium titanate, pulverized 200 mesh sieves, butyl titanate is dissolved in the ethanol solution that concentration is 75%wt, add above-mentioned 200 mesh powder afterwards, be then placed in ball mill, be heated to 60 DEG C of mixing and ball milling 60 minutes, cold go to room temperature to pour out stand-by；Converted starch will add the water of 10 times amount, it is heated to while stirring being pasted completely, continuously add agar, it is heated to 100 DEG C, stirring to agar liquefaction, add barium monoxide and above-mentioned ball milling afterproduct, put in high speed mixer, stir 15 minutes with the speed of 1000 revs/min, be finally spray-dried, obtain reinforcer；
(4) mixing suspension that will obtain in step (2) adds step (3) reinforcer that obtains and remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, form the slurry that online concentration is 0.1wt%, use wet therapy forming process that above-mentioned slurry is sent into paper machine through wet end and press section drainage and formation, then electricity consumption hot blast is dried 10 minutes, then it is stand-by to use hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C；
(5) the polyacrylonitrile nanofiber film obtaining step (1) covers on the non-weaving cloth base fabric that step (4) obtains, and carries out hot binding by the hot-rollings of 135 DEG C, shears, is packaged to be the present invention after cooling.
By testing the present embodiment diaphragm material, thickness is 66 μm, and average pore size is 0.24 μm, and porosity is 57%, and pick up is 601%, and at 110 DEG C, percent thermal shrinkage is less than 1%, and at 150 DEG C, percent thermal shrinkage is less than 1%.
Claims (2)
1. the ultracapacitor composite diaphragm material of a barium monoxide enhancing heat resistance, it is characterized in that, it is prepared by the raw materials in: vinal 35-40, polypropylene fibre 33-35, polyacrylonitrile powder 10-13, acetone 30-32, DMF 72-75,70 DEG C of water-soluble PVA fiber 8-10, agar 4-5, converted starch 3-4, barium monoxide 12-14, alumina silicate fibre 7-8.5, crystal whisker of hexa potassium titanate 2-3, butyl titanate 0.8-1, concentration are the ethanol solution 4-5 of 75%wt, polyoxyethylene sorbitan monooleate 1.5-2.
2. according to claims 1, a kind of barium monoxide strengthens the ultracapacitor composite diaphragm material of heat resistance, it is characterised in that be prepared from by following concrete grammar:
(1) by acetone and N, dinethylformamide mixes at normal temperatures, add polyacrylonitrile powder, stir 3 hours with the speed of 100 revs/min at normal temperatures, form polyacrylonitrile spinning solution, receiving range be 20cm, voltage be that 25kV, feed flow speed carry out electrostatic spinning 2 hours under conditions of being 1mL/h, spin out the polyacrylonitrile nanofiber film that thickness is 10 μm stand-by；
(2) polypropylene fibre is mixed with vinal, add appropriate water, put in beater, carry out being dispersed into fibrous suspension by 2% concentration, add 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until 70 DEG C of water-soluble PVA fibers to be completely dissolved formation mixing suspension stand-by；
(3) alumina silicate fibre is mixed with crystal whisker of hexa potassium titanate, pulverized 200 mesh sieves, butyl titanate is dissolved in the ethanol solution that concentration is 75%wt, add above-mentioned 200 mesh powder afterwards, be then placed in ball mill, be heated to 60 DEG C of mixing and ball milling 60 minutes, cold go to room temperature to pour out stand-by；Converted starch will add the water of 10 times amount, it is heated to while stirring being pasted completely, continuously add agar, it is heated to 100 DEG C, stirring to agar liquefaction, add barium monoxide and above-mentioned ball milling afterproduct, put in high speed mixer, stir 15 minutes with the speed of 1000 revs/min, be finally spray-dried, obtain reinforcer；
(4) mixing suspension that will obtain in step (2) adds step (3) reinforcer that obtains and remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, form the slurry that online concentration is 0.1wt%, use wet therapy forming process that above-mentioned slurry is sent into paper machine through wet end and press section drainage and formation, then electricity consumption hot blast is dried 10 minutes, then it is stand-by to use hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C；
(5) the polyacrylonitrile nanofiber film obtaining step (1) covers on the non-weaving cloth base fabric that step (4) obtains, and carries out hot binding by the hot-rollings of 135 DEG C, shears, is packaged to be the present invention after cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610055351.1A CN105990041A (en) | 2016-01-27 | 2016-01-27 | Supercapacitor composite separator material of enhanced heat resistance through barium oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610055351.1A CN105990041A (en) | 2016-01-27 | 2016-01-27 | Supercapacitor composite separator material of enhanced heat resistance through barium oxide |
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| CN105990041A true CN105990041A (en) | 2016-10-05 |
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| CN201610055351.1A Pending CN105990041A (en) | 2016-01-27 | 2016-01-27 | Supercapacitor composite separator material of enhanced heat resistance through barium oxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981717A (en) * | 2021-02-05 | 2021-06-18 | 广州金立电子有限公司 | Capacitor diaphragm and preparation method thereof |
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2016
- 2016-01-27 CN CN201610055351.1A patent/CN105990041A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981717A (en) * | 2021-02-05 | 2021-06-18 | 广州金立电子有限公司 | Capacitor diaphragm and preparation method thereof |
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Inventor after: Luo Shenxu Inventor after: Du Qixin Inventor before: Du Qixin |
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Application publication date: 20161005 |
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