CN102496484A - Method for manufacturing organic supercapacitor electrode plate - Google Patents
Method for manufacturing organic supercapacitor electrode plate Download PDFInfo
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- CN102496484A CN102496484A CN2011103886330A CN201110388633A CN102496484A CN 102496484 A CN102496484 A CN 102496484A CN 2011103886330 A CN2011103886330 A CN 2011103886330A CN 201110388633 A CN201110388633 A CN 201110388633A CN 102496484 A CN102496484 A CN 102496484A
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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 provides a method for manufacturing an organic supercapacitor electrode plate. The method comprises the following steps of: manufacturing an aluminum foil pretreatment coating, adding an adhesive into deionized water, and uniformly stirring at normal temperature; adding a conductive agent, absolute ethanol, a carbon nano tube and sodium carboxymethyl cellulose, stirring at a high speed and dispersing to obtain the coating; uniformly coating the manufactured pretreatment coating on an aluminum foil by employing a coating process, coating active substance slurry on the pretreated aluminum foil, and drying to manufacture the electrode plate. A corrosive aluminum foil is replaced by a common aluminum foil, the cost of raw materials is effectively reduced, and the production operability and stability are improved; meanwhile, after the aluminum foil is pretreated, internal resistance of the supercapacitor is greatly reduced, and high-power output performance of the product is improved.
Description
Technical field
The present invention relates to a kind of making of electrode slices for super capacitor, belong to technical field of chemical power.
Background technology
Ultracapacitor (Ultracapacitor) is double electric layer capacitor (Electrical Doule-Layer Capacitor) again; Passing through electrode active material---active carbon with high specific surface area comes energy storage; Chemical reaction does not take place in the process in its energy storage; This thermal energy storage process is reversible, also Just because of this, and can repeated charge hundreds thousand of times of ultracapacitor.The huge surface area of ultracapacitor active carbon is added very little separation of charge distance makes ultracapacitor than traditional capacitor and Yan Youda gets surprising static capacity, and this also is its " super " place.Its capacity far surpasses microfarad, the pico farad level of ordinary capacitor, and single electric capacity can reach several methods, hundreds of method, several thousand methods.The energy storage angle is near the order of magnitude of battery.Compare with battery, overcharge, cross and put to its life-span formation negative effect; Heavy metals such as not leaded, cadmium, mercury are a kind of environmental protection energy.
Electric automobile, field of wind power generation have promoted the development of big capacity ultracapacitor to demand high-power, the long-life power supply in recent years, and be also increasingly high to the ultracapacitor performance requirement.The ultracapacitor cost is still very high at present; The current collector corrodes aluminium foil that wherein extensively adopts has occupied the larger specific gravity of cost of material; Because aluminium foil has reduced mechanical performance behind etching process, making influences its very easily fracture in automatic coating machine is produced the serialization of producing and carries out simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency that adopts corrosive aluminum foil to bring in the existing pole piece making; A kind of organic type electrode slices for super capacitor manufacture method is provided; Replace corrosive aluminum foil with normal aluminium foil, can effectively reduce the cost, improve the operability of pole piece electric conductivity and production.
Technical scheme of the present invention is: organic type electrode slices for super capacitor manufacture method; Comprise the coating of active matter slurry; Its improvements are on aluminium foil, to be coated with preliminary treatment earlier, and then carry out the coating of active matter slurry, the steps include: at first to make the aluminium foil pretreatment coating; Aqueous binders is added in the deionized water, stir under the normal temperature; Add conductive agent, CNT, absolute ethyl alcohol and sodium carboxymethylcellulose then, high-speed stirred disperses 1h～24h to make coating; The mass percent of each component is in the coating: ethanol 1～5%, and CNT 0.1～1%, sodium carboxymethylcellulose 0.1～5%, aqueous binders 1～10%, conductive agent 20～40%, all the other are deionized water; Adopt coating process to be evenly coated on the aluminium foil pretreatment coating that makes, put into oven for drying, oven temperature is 60～120 ℃, drying time 1min～10min; Again the active matter slurry is coated on the pretreated aluminium foil, makes electrode plates after the oven dry.
Further scheme is: the aqueous binders that preliminary treatment is adopted is one or more mixtures in emulsion acrylic resin, vinyl acetate co-polymer, ethylene-vinyl acetate emulsion, SBR styrene butadiene rubbers emulsion, the neoprene latex; The conductive agent that preliminary treatment is adopted is one or more mixtures in native graphite, spherical graphite, the carbon fiber; Contain conductive agent identical with pretreatment coating or conductive agent mixture in the active matter slurry, its content is 0.1～10% of quality of activated carbon; The thickness of pretreatment coating is 0.1～10 μ m.
Through pretreating process in the smooth surface adhesion of normal aluminium foil one deck conductive agent and binding agent; Aluminium foil surface electric conductivity and adhesive property have been improved; Make firmly to combine between active material that follow-up coating gets on and the collector, avoid taking place to leak phenomenons such as paper tinsel, dry linting.CNT is a kind of new carbon that development in recent years is got up, and as a kind of nano material, its hardness and diamond are suitable, have good pliability simultaneously, has excellent mechanics, electricity and chemical property.Obviously improve the combination property of aluminium foil in the pre-treatment coating behind the adding CNT, though price is higher at present, only use in the aluminium foil preliminary treatment, total consumption is low, and the cost increase seldom.
The active matter slurry can adopt existing technology to make, and further improvements are on original prescription basis, to have increased the conductive agent identical with preliminary treatment, this conductive agent can be when batch mixing and cream and active carbon together add.
Because aluminium foil surface does not suffer erosion, and does not have structures such as empty etch pit, normal aluminium foil intensity also makes under the same process condition obviously greater than the same thickness corrosive aluminum foil, adopts thinner collector to become possibility.
The electrode slices for super capacitor that this method is made has pliability preferably, and active material and collector bonding closely are difficult for dry linting, and pole piece conducts electricity very well, and internal resistance is low; The collector aluminium foil is cheap and easy to get simultaneously, and the pole piece stable processing technique is reliable, effectively reduces the ultracapacitor product cost, and uncorroded aluminium foil can not rupture in the production, has improved the production operability.
Embodiment
Embodiment 1
On the 10L paste mixing machine, make the aluminium foil pretreatment coating, weighing SBR styrene butadiene rubbers emulsion (SBR) 0.5Kg adds in the 7.2Kg deionized water, stirs under the normal temperature; Add conductive agent native graphite 2Kg then, absolute ethyl alcohol 0.2Kg, CNT 20g, sodium carboxymethylcellulose 0.1kg., high-speed stirred disperses 2h to make coating.
20 micron thick aluminium foils are inserted the automation coating machine, pour pre-treatment coating into from charge door, tape running speed 3.5m/min is set, intermittently to control the thickness of pretreatment coating be 1～2 μ m with being coated with roller through regulating scraper.Adopt coating process to be evenly coated on the aluminium foil pretreatment coating that makes.Aluminium foil gets into oven for drying automatically immediately, and oven temperature is 60 ℃, drying time 2min.
On the 50L paste mixing machine, drop into the 10Kg active carbon and carry out ultracapacitor active material and cream, and add native graphite 0.1Kg by common process.The slurry that makes drops into automation coating machine charge door, and pretreated aluminium foil is inserted the automation coating machine, opens coating machine slurry is uniformly coated on the aluminium foil, makes electrode plates after the oven dry.
To make electrode plates and tailor into the given size size, be assembled into the 1500F flexible packed super-capacitor, it will be numbered sample 1.
Embodiment 2
On the 10L paste mixing machine, make aluminium foil pretreatment coating, weighing SBR styrene butadiene rubbers emulsion (SBR) 0.5Kg, neoprene latex 0.2Kg.Add in the 6.4Kg deionized water, stir under the normal temperature; Add conductive agent carbon fiber 2.5Kg, absolute ethyl alcohol 0.1Kg, CNT 20g, sodium carboxymethylcellulose 0.3Kg then., high-speed stirred disperses 10h to make coating.
20 micron thick aluminium foils are inserted the automation coating machine, pour pre-treatment coating into from charge door, tape running speed 3.5m/min is set, intermittently to control the thickness of pretreatment coating be 5 μ m with being coated with roller through regulating scraper.Adopt coating process to be evenly coated on the aluminium foil pretreatment coating that makes.Aluminium foil gets into oven for drying automatically immediately, and oven temperature is 80 ℃, drying time 2min.
On the 50L paste mixing machine, drop into the 10Kg active carbon and carry out ultracapacitor active material and cream, and add conductive agent carbon fiber 0.5Kg by common process.The slurry that makes drops into automation coating machine charge door, and pretreated aluminium foil is inserted the automation coating machine, opens coating machine slurry is uniformly coated on the aluminium foil, makes electrode plates after the oven dry.
To make electrode plates and tailor into the given size size, be assembled into the 1500F flexible packed super-capacitor, it will be numbered sample 2.
Embodiment 3
On the 10L paste mixing machine, make aluminium foil pretreatment coating, ethylene-vinyl acetate emulsion (VAE) 0.2Kg, neoprene latex (CR) 0.8Kg.Add in the 6.85Kg deionized water, stir under the normal temperature; Add conductive agent native graphite 1Kg and carbon fiber 0.5Kg then, absolute ethyl alcohol 0.5Kg, CNT 50g, sodium carboxymethylcellulose 0.1Kg, high-speed stirred disperses 24h to make coating.
30 micron thick aluminium foils are inserted the automation coating machine, pour pre-treatment coating into from charge door, tape running speed 3.5m/min is set, intermittently to control the thickness of pretreatment coating be 1～2 μ m with being coated with roller through regulating scraper.Adopt coating process to be evenly coated on the aluminium foil pretreatment coating that makes.Aluminium foil gets into oven for drying automatically immediately, and oven temperature is 120 ℃, drying time 5min.
On the 50L paste mixing machine, drop into the 10Kg active carbon and carry out ultracapacitor active material and cream, and add conductive agent native graphite 0.5Kg and carbon fiber 0.2Kg by common process.The slurry that makes drops into automation coating machine charge door, and pretreated aluminium foil is inserted the automation coating machine, opens coating machine slurry is uniformly coated on the aluminium foil, makes electrode plates after the oven dry.
To make electrode plates and tailor into the given size size, be assembled into the 1500F flexible packed super-capacitor, it will be numbered sample 3.
The 1500F conventional products of above 3 kinds of samples and the making of existing technology is tested on charge-discharge machine, and adopted 1000Hz alternating current impedance instrument test internal resistance, test result sees the following form.
| Sample number into spectrum | Capacity (F) | Internal resistance (m Ω) | Collector | Collector thickness (μ m) |
| Sample 1 | 1515 | 0.67 | Normal aluminium foil | 20 |
| Sample 2 | 1522 | 0.65 | Normal aluminium foil | 20 |
| Sample 3 | 1502 | 0.58 | Normal aluminium foil | 30 |
| Conventional products | 1510 | 0.83 | Corrosive aluminum foil | 30 |
Can find out that from test result the sample capacity of embodiment made is suitable with conventional products, can effectively substitute corrosive aluminum foil and reduce cost that internal resistance simultaneously has bigger decline, promote the high-power performance of product.
It is all identical with prior art that the present invention does not relate to part, maybe can adopt prior art to realize.
Claims (5)
1. organic type electrode slices for super capacitor manufacture method; Comprise the coating of active matter slurry; It is characterized in that on aluminium foil, being coated with preliminary treatment earlier, and then carry out the coating of active matter slurry, the steps include: at first to make the aluminium foil pretreatment coating; Aqueous binders is added in the deionized water, stir under the normal temperature; Add conductive agent, CNT, absolute ethyl alcohol and sodium carboxymethylcellulose then, high-speed stirred disperses 1h～24h to make coating; The mass percent of each component is in the coating: ethanol 1～5%, and CNT 0.1～1%, sodium carboxymethylcellulose 0.1～5%, aqueous binders 1～10%, conductive agent 20～40%, all the other are deionized water; Adopt coating process to be evenly coated on the aluminium foil pretreatment coating that makes, put into oven for drying, oven temperature is 60～120 ℃, drying time 1min～10min; Again the active matter slurry is coated on the pretreated aluminium foil, makes electrode plates after the oven dry.
2. organic type electrode slices for super capacitor manufacture method as claimed in claim 1 is characterized in that the aqueous binders that preliminary treatment is adopted is one or more mixtures in emulsion acrylic resin, vinyl acetate co-polymer, ethylene-vinyl acetate emulsion, SBR styrene butadiene rubbers emulsion, the neoprene latex.
3. organic type electrode slices for super capacitor manufacture method as claimed in claim 1 is characterized in that the conductive agent that preliminary treatment is adopted is one or more mixtures in native graphite, spherical graphite, the carbon fiber.
4. organic type electrode slices for super capacitor manufacture method as claimed in claim 1 is characterized in that containing in the active matter slurry conductive agent identical with pretreatment coating or conductive agent mixture, and its content is 0.1～10% of quality of activated carbon.
5. organic type electrode slices for super capacitor manufacture method as claimed in claim 1, the thickness that it is characterized in that pretreatment coating are 0.1～10 μ m.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347278A (en) * | 2014-11-14 | 2015-02-11 | 深圳市今朝时代新能源技术有限公司 | Preparation method for coating aluminum foil used for supercapacitor |
| CN104377044A (en) * | 2014-10-17 | 2015-02-25 | 超威电源有限公司 | Composite current collector for pseudo type super capacitor and manufacturing method thereof |
| CN104377043A (en) * | 2014-10-17 | 2015-02-25 | 超威电源有限公司 | Composite current collector for corrosion resistance and high conductivity pseudocapacitance type supercapacitor and preparing method of composite current collector |
| CN104465126A (en) * | 2014-11-13 | 2015-03-25 | 超威电源有限公司 | Composite current collector resistant to corrosion and high in electroconductivity and manufacturing method thereof |
| CN108917992A (en) * | 2018-07-10 | 2018-11-30 | 浙江欧仁新材料有限公司 | Stretch sensor based on flexible pressure-sensitive element |
| CN109786119A (en) * | 2019-01-23 | 2019-05-21 | 三峡大学 | A kind of method of porous electrode and its conductive treatment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562078A (en) * | 2009-05-15 | 2009-10-21 | 深圳清华大学研究院 | Super-capacitor and preparation method thereof |
| CN101794671A (en) * | 2010-03-26 | 2010-08-04 | 北京集星联合电子科技有限公司 | Super capacitor and manufacture method thereof |
-
2011
- 2011-11-30 CN CN2011103886330A patent/CN102496484A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562078A (en) * | 2009-05-15 | 2009-10-21 | 深圳清华大学研究院 | Super-capacitor and preparation method thereof |
| CN101794671A (en) * | 2010-03-26 | 2010-08-04 | 北京集星联合电子科技有限公司 | Super capacitor and manufacture method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377044A (en) * | 2014-10-17 | 2015-02-25 | 超威电源有限公司 | Composite current collector for pseudo type super capacitor and manufacturing method thereof |
| CN104377043A (en) * | 2014-10-17 | 2015-02-25 | 超威电源有限公司 | Composite current collector for corrosion resistance and high conductivity pseudocapacitance type supercapacitor and preparing method of composite current collector |
| CN104377044B (en) * | 2014-10-17 | 2017-06-30 | 超威电源有限公司 | Counterfeit electric-type ultracapacitor composite current collector and preparation method thereof |
| CN104377043B (en) * | 2014-10-17 | 2017-06-30 | 超威电源有限公司 | A kind of counterfeit electric-type ultracapacitor composite current collector of corrosion-resistant high conductivity and preparation method thereof |
| CN104465126A (en) * | 2014-11-13 | 2015-03-25 | 超威电源有限公司 | Composite current collector resistant to corrosion and high in electroconductivity and manufacturing method thereof |
| CN104465126B (en) * | 2014-11-13 | 2017-06-06 | 超威电源有限公司 | A kind of anti-corrosion electric conducting composite current collector high and its manufacture method |
| CN104347278A (en) * | 2014-11-14 | 2015-02-11 | 深圳市今朝时代新能源技术有限公司 | Preparation method for coating aluminum foil used for supercapacitor |
| CN108917992A (en) * | 2018-07-10 | 2018-11-30 | 浙江欧仁新材料有限公司 | Stretch sensor based on flexible pressure-sensitive element |
| CN109786119A (en) * | 2019-01-23 | 2019-05-21 | 三峡大学 | A kind of method of porous electrode and its conductive treatment |
| CN109786119B (en) * | 2019-01-23 | 2020-01-07 | 三峡大学 | Porous electrode and conductive treatment method thereof |
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