CN106128793A - The hybrid supercapacitor diaphragm material that a kind of isolation performance is good - Google Patents
The hybrid supercapacitor diaphragm material that a kind of isolation performance is good Download PDFInfo
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- CN106128793A CN106128793A CN201610473270.3A CN201610473270A CN106128793A CN 106128793 A CN106128793 A CN 106128793A CN 201610473270 A CN201610473270 A CN 201610473270A CN 106128793 A CN106128793 A CN 106128793A
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- polyacrylonitrile
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- diaphragm material
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- 239000000463 material Substances 0.000 title claims abstract description 21
- 238000002955 isolation Methods 0.000 title claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 18
- -1 polypropylene Polymers 0.000 claims abstract description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229920000742 Cotton Polymers 0.000 claims abstract description 9
- 239000004927 clay Substances 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims abstract description 8
- 229920001155 polypropylene Polymers 0.000 claims abstract description 8
- 229920000728 polyester Polymers 0.000 claims abstract description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 6
- 229920002472 Starch Polymers 0.000 claims abstract description 4
- 125000002091 cationic group Chemical group 0.000 claims abstract description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229940057995 liquid paraffin Drugs 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 235000019698 starch Nutrition 0.000 claims abstract description 4
- 239000008107 starch Substances 0.000 claims abstract description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract 5
- 238000003756 stirring Methods 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 9
- 239000002121 nanofiber Substances 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010041 electrostatic spinning Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000002560 therapeutic procedure Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses the hybrid supercapacitor diaphragm material that a kind of isolation performance is good, it is prepared by the raw materials in: vinal 35 40, polypropylene fibre 33 35, polyacrylonitrile powder 10 13, acetone 30 32, N, N dimethylformamide 72 75,70 DEG C of water-soluble PVA fibers 8 10, cationic starch 45, glass cotton 45, liquid paraffin 23, polydimethylsiloxane 1.5 2, potter's clay 9 11, Palmic acid 23, polyester powders 34.The composition such as glass cotton, potter's clay is also added in the preparation of product by the present invention by a series of modification, good permeability, improve the mechanical strength of product, and improve its heat-resisting ability, make super capacitor material the most also can keep good isolation, extend the service life of ultracapacitor.
Description
Technical field
The present invention relates to capacitor diaphragm technical field, particularly relate to the hybrid supercapacitor that a kind of isolation performance is good
Diaphragm material.
Background technology
Ultracapacitor is the accumulator of a kind of great market competitiveness, owing to it can realize quick charge, big electric current
Electric discharge, and there is the charge lifetimes of more than 100,000 times, in some need the application of high-multiplying power discharge in short-term, occupy critical role.
Hybrid vehicle and electric automobile also result in the requirement of electrical source of power in worldwide that this is new to ultracapacitor
The extensive attention of type energy storage device.In the composition of ultracapacitor, electrode, electrolyte and the diaphragm paper property to ultracapacitor
Conclusive impact can be played.Electrode and the electrolyte of ultracapacitor is the focus studied at present, but people are for barrier film
Research and attention rate the highest.
The diaphragm paper of ultracapacitor is between two porous carbon electrodes, and complete wetting is at electrolyte together with electrode
In, during repeated charge, play the effect of isolation, stop electronics conduction, prevent between the two poles of the earth, contacting the inside caused short
Road.This just requires that diaphragm material is the insulator of electronics, has good isolation performance, and its hole should be as far as possible less than electricity
The minimum grain size of pole surfactant.The necessary aperture of the preferable diaphragm paper of isolation performance is little, so can make the circulation of electrolyte
Property decline, battery charging and discharging hydraulic performance decline;And electrolyte to be impregnated with rate higher, ion is by the good diaphragm material often hole of property relatively
The most more, easily cause and between the two poles of the earth, contact the internal short-circuit caused.The advantage of ultracapacitor maximum is charge/discharge rates
Hurry up, can be with high power discharge, therefore, diaphragm material will thinner towards thickness, porosity is higher, aperture is less and is more evenly distributed
Contour performance trend development.
The material being currently used for diaphragm of supercapacitor mainly has cellulosic separator paper and conventional batteries barrier film, high-performance every
Film paper manufactures technical difficulty, and price is high;Conventional batteries membrane thicknesses is thicker, and porosity is low, poor to electrolyte affinity, and quiet
Electro spinning nanometer fiber membrane manufacturing technology is simple, low cost, and barrier film porosity is up to 90%, good to electrolyte affinity, but lacks
Point is that intensity is the highest.If cellulosic separator paper can be combined with electrospun fibers film, learning from other's strong points to offset one's weaknesses, can be become
The composite diaphragm material that this is low, porosity is high, intensity is big.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that the compound super electricity that a kind of isolation performance is good
Container diaphragm material.
The present invention is achieved by the following technical solutions:
The hybrid supercapacitor diaphragm material that a kind of isolation performance is good, is prepared by the raw materials in: polyvinyl alcohol
Fiber 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, cationic starch 4-5, glass cotton 4-5, liquid paraffin 2-3, polydimethylsiloxane 1.5-2,
Potter's clay 9-11, Palmic acid 2-3, polyester powder 3-4.
According to the hybrid supercapacitor diaphragm material that a kind of isolation performance described in claims 1 is good, by following tool
Body method is prepared from:
(1) acetone is mixed homogeneously at normal temperatures with DMF, add polyacrylonitrile powder, with 100 revs/min
Speed stirs 3 hours at normal temperatures, formed polyacrylonitrile spinning solution, receiving range be 20cm, voltage be 25kV, feed flow speed
Rate is to carry out electrostatic spinning 2 hours under conditions of 1mL/h, spins 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 by 2% concentration
It is dispersed into fibrous suspension, adds 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until
It is stand-by that 70 DEG C of water-soluble PVA fibers are completely dissolved formation mixing suspension;
(3) glass cotton is pulverized, cross 200 mesh sieves, mix in polydimethylsiloxane, put into ball milling in ball mill and add after 40 minutes
Enter potter's clay, continue ball milling 1 hour, pour out rear direct sintering, roasting 2 hours under conditions of 650 DEG C, take out stand-by after cooling;
To add the water of 10 times amount in polyester powder, stirring, to being uniformly dispersed, is subsequently adding the product after above-mentioned sintering, with 300 revs/min
Speed stir and be spray-dried after 50 minutes, obtain reinforcer;
(4) mixing suspension that will obtain in step (2) adds reinforcer, the polyacrylamide emulsion that step (3) obtains
And remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, forming online concentration is
The slurry of 0.1wt%, uses wet therapy forming process by above-mentioned slurry feeding paper machine through wet end and press section drainage and formation, then
Electricity consumption hot blast is dried 10 minutes, then uses hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C to treat
With;
(5) polyacrylonitrile nanofiber film step (1) obtained covers on the non-weaving cloth base fabric that step (4) obtains,
Carry out hot binding by the hot-rollings of 135 DEG C, shear after cooling, be packaged to be the present invention.
The invention have the advantage that first polyacrylonitrile is carried out electrostatic spinning and make polyacrylonitrile nanofiber by the present invention
Film, then utilizes vinal to mix with polypropylene fibre, uses wet nonwoven fabrics technique to make non-weaving cloth, incite somebody to action both
Well it is bonded together by the way of hot pressing, intensity height, the performance of good permeability can be obtained, and preferably control
The aperture of diaphragm material and distribution so that aperture is less to be more evenly distributed, porosity is high such that it is able to be preferably impregnated with electrolysis
Liquid 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 is also
Having preferable tensile strength, chemical stability, fluidity and isolation performance are protected in imbibition.
The composition such as glass cotton, potter's clay is also added in the preparation of product by the present invention by a series of modification, breathability
Good, improve the mechanical strength of product, and improve its heat-resisting ability so that super capacitor material the most also can be protected
Hold good isolation, extend the service life of ultracapacitor.
Detailed description of the invention
The hybrid supercapacitor diaphragm material that a kind of isolation performance is good, by the raw material system of following weight portion (kilogram)
Become: vinal 35, polypropylene fibre 33, polyacrylonitrile powder 10, acetone 30,72,70 DEG C of water of DMF
Molten PVA fiber 8, cationic starch 4, glass cotton 4, liquid paraffin 2, polydimethylsiloxane 1.5, potter's clay 9, Palmic acid 2, polyester
Rubber powder 3.
According to the hybrid supercapacitor diaphragm material that a kind of isolation performance described in claims 1 is good, by following tool
Body method is prepared from:
(1) acetone is mixed homogeneously at normal temperatures with DMF, add polyacrylonitrile powder, with 100 revs/min
Speed stirs 3 hours at normal temperatures, formed polyacrylonitrile spinning solution, receiving range be 20cm, voltage be 25kV, feed flow speed
Rate is to carry out electrostatic spinning 2 hours under conditions of 1mL/h, spins 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 by 2% concentration
It is dispersed into fibrous suspension, adds 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until
It is stand-by that 70 DEG C of water-soluble PVA fibers are completely dissolved formation mixing suspension;
(3) glass cotton is pulverized, cross 200 mesh sieves, mix in polydimethylsiloxane, put into ball milling in ball mill and add after 40 minutes
Enter potter's clay, continue ball milling 1 hour, pour out rear direct sintering, roasting 2 hours under conditions of 650 DEG C, take out stand-by after cooling;
To add the water of 10 times amount in polyester powder, stirring, to being uniformly dispersed, is subsequently adding the product after above-mentioned sintering, with 300 revs/min
Speed stir and be spray-dried after 50 minutes, obtain reinforcer;
(4) mixing suspension that will obtain in step (2) adds reinforcer, the polyacrylamide emulsion that step (3) obtains
And remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, forming online concentration is
The slurry of 0.1wt%, uses wet therapy forming process by above-mentioned slurry feeding paper machine through wet end and press section drainage and formation, then
Electricity consumption hot blast is dried 10 minutes, then uses hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C to treat
With;
(5) polyacrylonitrile nanofiber film step (1) obtained covers on the non-weaving cloth base fabric that step (4) obtains,
Carry out hot binding by the hot-rollings of 135 DEG C, shear after cooling, be packaged to be the present invention.
By testing the present embodiment diaphragm material, thickness is 78 μm, and average pore size is 0.27 μm, and porosity is
66%, pick up is 598%, 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 hybrid supercapacitor diaphragm material that an isolation performance is good, it is characterised in that by the raw material of following weight portion
Make: vinal 35-40, polypropylene fibre 33-35, polyacrylonitrile powder 10-13, acetone 30-32, N, N-dimethyl
Methanamide 72-75,70 DEG C of water-soluble PVA fiber 8-10, cationic starch 4-5, glass cotton 4-5, liquid paraffin 2-3, poly dimethyls
Siloxanes 1.5-2, potter's clay 9-11, Palmic acid 2-3, polyester powder 3-4.
2. according to the hybrid supercapacitor diaphragm material that a kind of isolation performance described in claims 1 is good, it is characterised in that
It is prepared from by following concrete grammar:
(1) acetone is mixed homogeneously at normal temperatures with DMF, add polyacrylonitrile powder, with 100 revs/min
Speed stirs 3 hours at normal temperatures, formed polyacrylonitrile spinning solution, receiving range be 20cm, voltage be 25kV, feed flow speed
Rate is to carry out electrostatic spinning 2 hours under conditions of 1mL/h, spins 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 by 2% concentration
It is dispersed into fibrous suspension, adds 70 DEG C of water-soluble PVA fibers, be heated to 70 DEG C while stirring with the speed of 1000 revs/min, until
It is stand-by that 70 DEG C of water-soluble PVA fibers are completely dissolved formation mixing suspension;
(3) glass cotton is pulverized, cross 200 mesh sieves, mix in polydimethylsiloxane, put into ball milling in ball mill and add after 40 minutes
Enter potter's clay, continue ball milling 1 hour, pour out rear direct sintering, roasting 2 hours under conditions of 650 DEG C, take out stand-by after cooling;
To add the water of 10 times amount in polyester powder, stirring, to being uniformly dispersed, is subsequently adding the product after above-mentioned sintering, with 300 revs/min
Speed stir and be spray-dried after 50 minutes, obtain reinforcer;
(4) mixing suspension that will obtain in step (2) adds reinforcer, the polyacrylamide emulsion that step (3) obtains
And remaining residual components, continuously add appropriate water, stir 30 minutes with the speed of 600 revs/min, forming online concentration is
The slurry of 0.1wt%, uses wet therapy forming process by above-mentioned slurry feeding paper machine through wet end and press section drainage and formation, then
Electricity consumption hot blast is dried 10 minutes, then uses hot forming machine to obtain non-weaving cloth base fabric with the temperature heat pressure adhesive of 135 DEG C to treat
With;
(5) polyacrylonitrile nanofiber film step (1) obtained covers on the non-weaving cloth base fabric that step (4) obtains,
Carry out hot binding by the hot-rollings of 135 DEG C, shear after cooling, be packaged to be the present invention.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610473270.3A CN106128793A (en) | 2016-06-24 | 2016-06-24 | The hybrid supercapacitor diaphragm material that a kind of isolation performance is good |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610473270.3A CN106128793A (en) | 2016-06-24 | 2016-06-24 | The hybrid supercapacitor diaphragm material that a kind of isolation performance is good |
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CN201610473270.3A Pending CN106128793A (en) | 2016-06-24 | 2016-06-24 | The hybrid supercapacitor diaphragm material that a kind of isolation performance is good |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110265233A (en) * | 2019-05-06 | 2019-09-20 | 铜陵市启动电子制造有限责任公司 | A kind of low resistance capacitor diaphragm and preparation method thereof |
CN113764200A (en) * | 2021-09-15 | 2021-12-07 | 东莞理工学院 | Super capacitor, diaphragm and preparation method thereof |
CN113972439A (en) * | 2021-11-29 | 2022-01-25 | 无锡明奥达铁路配件有限公司 | Process for manufacturing separator rolling circle |
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CN1059136A (en) * | 1990-07-17 | 1992-03-04 | 日东纺织株式会社 | The manufacture method and the device of the glass wool that forms thermally-insulated body are used to jet |
CN1553462A (en) * | 2003-12-19 | 2004-12-08 | 南京双登科技发展研究院有限公司 | super capacitor diaphragm |
CN103100264A (en) * | 2013-02-06 | 2013-05-15 | 吕凯 | Battery and capacitor diaphragm filter material formed by wet nonwoven fabrics and preparation method of filter material |
CN104766938A (en) * | 2015-02-10 | 2015-07-08 | 龙岩紫荆创新研究院 | Composite lithium ion battery diaphragm and preparation method thereof |
-
2016
- 2016-06-24 CN CN201610473270.3A patent/CN106128793A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1059136A (en) * | 1990-07-17 | 1992-03-04 | 日东纺织株式会社 | The manufacture method and the device of the glass wool that forms thermally-insulated body are used to jet |
CN1553462A (en) * | 2003-12-19 | 2004-12-08 | 南京双登科技发展研究院有限公司 | super capacitor diaphragm |
CN103100264A (en) * | 2013-02-06 | 2013-05-15 | 吕凯 | Battery and capacitor diaphragm filter material formed by wet nonwoven fabrics and preparation method of filter material |
CN104766938A (en) * | 2015-02-10 | 2015-07-08 | 龙岩紫荆创新研究院 | Composite lithium ion battery diaphragm and preparation method thereof |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110265233A (en) * | 2019-05-06 | 2019-09-20 | 铜陵市启动电子制造有限责任公司 | A kind of low resistance capacitor diaphragm and preparation method thereof |
CN110265233B (en) * | 2019-05-06 | 2021-03-02 | 铜陵市启动电子制造有限责任公司 | Low-resistance capacitor diaphragm and preparation method thereof |
CN113764200A (en) * | 2021-09-15 | 2021-12-07 | 东莞理工学院 | Super capacitor, diaphragm and preparation method thereof |
CN113764200B (en) * | 2021-09-15 | 2022-08-12 | 东莞理工学院 | Super capacitor, diaphragm and preparation method thereof |
CN113972439A (en) * | 2021-11-29 | 2022-01-25 | 无锡明奥达铁路配件有限公司 | Process for manufacturing separator rolling circle |
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Application publication date: 20161116 |