CN103956273B - Method for manufacturing electrode pieces for supercapacitors - Google Patents
Method for manufacturing electrode pieces for supercapacitors Download PDFInfo
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- CN103956273B CN103956273B CN201410145453.3A CN201410145453A CN103956273B CN 103956273 B CN103956273 B CN 103956273B CN 201410145453 A CN201410145453 A CN 201410145453A CN 103956273 B CN103956273 B CN 103956273B
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- electrode material
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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 a method for manufacturing electrode pieces for supercapacitors. The method includes the steps that conductive materials and binder are evenly mixed so that gelatinized conductive materials can be obtained, active substances are added into the gelatinized conductive materials, the gelatinized conductive materials with the active substances are smashed into large particles of electrode materials, the large particles of the electrode materials are kneaded to form elastic electrode material colloid, water is added into the elastic electrode material colloid, the water and the elastic electrode material colloid are stirred to form electrode material slurry, a current collector is coated with the electrode material slurry, the electrode material slurry is compacted on the current collector through thermal compression, and finished electrode pieces with the bulk density ranging from 0.62 g/cm<3> to 0.75 g/cm<3> are obtained. The method has the advantages that consumption of the conductive materials can be reduced, the dispersibility of the conductive materials and the adhesiveness between the conductive materials and the active materials are improved, internal resistance of electrodes is effectively reduced, the bulk density of the electrode pieces is increased, and the volumetric specific energy of the supercapacitors manufactured with the electrode pieces is increased.
Description
Technical field
The present invention relates to a kind of preparation method of ultracapacitor pole piece.
Background technology
As a kind of emerging energy storage device, with its high-specific-power, high-energy-density, charge/discharge rates are fast, make for ultracapacitor
With temperature range width, long-life, the characteristic such as non-maintaining, in intelligence instrument, electric power, medical treatment, solar wind-energy, toy, new forms of energy
The fields such as automobile are widely used.
Ultracapacitor is divided into button type and convoluted from structure, and the electrode slice of wherein behavior of spiral wound supercapacitor is main
Including active substance and collector.
The electrode piece preparation method of existing behavior of spiral wound supercapacitor based on coating method, that is, first by active substance and leading
Electric agent mixing, is subsequently adding binding agent and water, stirs into slurry, be coated on collector.The method is there is problems that making
Insufficient contact between contact between active substance and conductive agent and active substance and active substance during standby, lead to
The internal resistance of electrode slice is big, and body density is low, and in unit volume, the specific capacity of electrode is low.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of ultracapacitor pole piece, and the method can make
Conductive material is combined it is ensured that the contact between active substance and between active substance and conductive agent is good with the abundant of binding agent
Good, so that electrode slice internal resistance is little, body density is high, and in unit volume, specific capacity is high.
The technical solution of the present invention is:
A kind of preparation method of ultracapacitor pole piece, it specifically comprises the following steps that
(1) conductive material gel
Conductive material is mixed homogeneously for 1:1～5:1 according to mass ratio with binding agent, obtains gel conductive material；
(2) make bulky grain
Active substance is added in gel conductive material and is ground into the electrode material that particle diameter is 0.1mm～10mm big
Granule, described conductive material is 1:1～1:10 with the mass ratio of active substance；
(3) mediate
Electrode material bulky grain is kneaded into electrode material elasticity colloid；
(4) slurrying
Electrode material elasticity colloid is added water, stirs into the electrode material slurry that solid content is 30wt%～40wt%；
(5) coat
Electrode material slurry is coated on collector, untreated pole piece is obtained；
(6) hot pressing
By untreated pole piece at 60 DEG C～240 DEG C hot compaction, make body density be 0.62g/cm3～0.75g/cm3
Finished product pole piece.
Described active substance is activated carbon, carbon fiber, Graphene, CNT, charcoal-aero gel, metal-oxide, conduction
One of polymer.
Described active substance is activated carbon, Graphene or CNT.
The ratio of described conductive agent and binding agent is 1:1.
Described conductive material is one of conductive black, acetylene black, electrically conductive graphite, Graphene, CNT, carbon fiber
Or it is several.
Described binding agent is politef, sodium carboxymethyl cellulose, water-base cement, Kynoar, butadiene-styrene rubber, poly- second
One of alkene, polypropylene or several.
During the kneading of step (3), mediated using planetary stirring machine, kneader, homogenizer or ball mill.
During hot pressing, heating twin rollers are preheating to 40 DEG C～100 DEG C, with spray, untreated pole piece are squirted, with heating
Twin rollers, by after the untreated pole piece compacting squirting, carry out heating, drying；Described spray is water, methanol, ethanol, isopropyl
Alcohol, Allyl carbonate, styrene, perchloroethylene, trichloro ethylene, ethylene glycol ether, triethanolamine, methyl acetate, acetic acid second
One or more of ester, propyl acetate etc..
Beneficial effects of the present invention:
Prepare, with active substance and gel conductive material, the dispersibility that electrode material bulky grain can improve conductive material, lead to
Cross and be kneaded into the tack that electrode material elasticity colloid can improve between conductive material and active substance, improve conduction material
Material contact between active substance, thus having reached the consumption reducing conductive material, and reducing the internal resistance of electrode, improving
The body density of pole piece, increased the volume and capacity ratio of the ultracapacitor making of this pole piece.
Specific embodiment
Embodiment 1
(1) conductive material gel
Conductive black is mixed homogeneously for 1:1 according to mass ratio with politef, obtains gel conductive material；
(2) make bulky grain
Graphene is added in gel conductive material and is ground into big of the electrode material that particle diameter is 0.1mm～10mm
Grain, described conductive black is 1:1 with the mass ratio of Graphene；
(3) mediate
Electrode material bulky grain planetary stirring machine is kneaded into electrode material elasticity colloid；
(4) slurrying
Electrode material elasticity colloid is added water, stirring into solid content (quality of electrode material elasticity colloid) is
The electrode material slurry of 30wt%；
(5) coat
Electrode material slurry is coated on collector, untreated pole piece is obtained；
(6) hot pressing
By untreated pole piece at 60 DEG C hot compaction, during hot pressing, by heating twin rollers be preheating to 40 DEG C, will not with water
Process pole piece to squirt, with heating twin rollers by after the untreated pole piece compacting squirting, carry out heating, drying, making body density is
0.62g/cm3Finished product pole piece.
Embodiment 2
(1) conductive material gel
Acetylene black is mixed homogeneously for 3:1 according to mass ratio with butadiene-styrene rubber, obtains gel conductive material；
(2) make bulky grain
Activated carbon is added in gel conductive material and is ground into big of the electrode material that particle diameter is 0.1mm～10mm
Grain, described acetylene black is 1:10 with the mass ratio of activated carbon；
(3) mediate
Electrode material bulky grain ball mill is kneaded into electrode material elasticity colloid；
(4) slurrying
Electrode material elasticity colloid is added water, stirs into the electrode material slurry that solid content is 40wt%；
(5) coat
Electrode material slurry is coated on collector, untreated pole piece is obtained；
(6) hot pressing
By untreated pole piece at 240 DEG C hot compaction, during hot pressing, by heating twin rollers be preheating to 100 DEG C, use benzene second
Untreated pole piece is squirted by alkene, with heating twin rollers by after the untreated pole piece compacting squirting, carries out heating, drying, makes body
Density is 0.75g/cm3Finished product pole piece.
Embodiment 3
(1) conductive material gel
Carbon fiber is mixed homogeneously for 5:1 according to mass ratio with polypropylene, obtains gel conductive material；
(2) make bulky grain
CNT is added in gel conductive material and is ground into big of the electrode material that particle diameter is 0.1mm～10mm
Grain, described carbon fiber is 1:5 with the mass ratio of CNT；
(3) mediate
Electrode material bulky grain homogenizer is kneaded into electrode material elasticity colloid；
(4) slurrying
Electrode material elasticity colloid is added water, stirs into the electrode material slurry that solid content is 35wt%；
(5) coat
Electrode material slurry is coated on collector, untreated pole piece is obtained；
(6) hot pressing
By untreated pole piece at 150 DEG C hot compaction, during hot pressing, by heating twin rollers be preheating to 80 DEG C, use trichlorine
Untreated pole piece is squirted by ethylene, with heating twin rollers by after the untreated pole piece compacting squirting, carries out heating, drying, makes
Body density is 0.70g/cm3Finished product pole piece.
Comparative example 1
By electrically conductive graphite and activated carbon mixing, it is subsequently adding butadiene-styrene rubber and water, described electrically conductive graphite, activated carbon and butylbenzene
The mass ratio of rubber is 10:85:5, stirs into the electrode material slurry that solid content is 35wt%, is coated on collector, is obtained not
Process pole piece, by untreated pole piece at 150 DEG C hot compaction, during hot pressing, by heating twin rollers be preheating to 80 DEG C, use second
Untreated pole piece is squirted by alcohol, with heating twin rollers by after the untreated pole piece compacting squirting, carries out heating, drying, makes body
Density is 0.6g/cm3Finished product pole piece.
With guide pin, winding on the electrode slice obtained by the embodiment of the present invention 1～embodiment 3 and comparative example 1 respectively rivet
Become core, be then passed through 120 DEG C of eliminating waters, organize in the environment of nitrogen and stand encapsulation, prepared ultracapacitor product, through test,
The properties of product such as table 1 of the ultracapacitor that three kinds of pole pieces are obtained respectively:
The electrification of the ultracapacitor product that the pole piece of table 1 embodiment of the present invention 1～embodiment 3 and comparative example 1 is obtained
Learn performance
Claims (1)
1. a kind of preparation method of ultracapacitor pole piece, is characterized in that: specifically comprise the following steps that
(1) conductive material gel
Carbon fiber is mixed homogeneously for 5:1 according to mass ratio with polypropylene, obtains gel conductive material；
(2) make bulky grain
CNT is added in gel conductive material and is ground into the electrode material bulky grain that particle diameter is 0.1mm～10mm,
Described carbon fiber is 1:5 with the mass ratio of CNT；
(3) mediate
Electrode material bulky grain homogenizer is kneaded into electrode material elasticity colloid；
(4) slurrying
Electrode material elasticity colloid is added water, stirs into the electrode material slurry that solid content is 35wt%；
(5) coat
Electrode material slurry is coated on collector, untreated pole piece is obtained；
(6) hot pressing
By untreated pole piece at 150 DEG C hot compaction, during hot pressing, by heating twin rollers be preheating to 80 DEG C, use trichloro ethylene
Untreated pole piece is squirted, with heating twin rollers by after the untreated pole piece compacting squirting, carries out heating, drying, make body close
Spend for 0.70g/cm3Finished product pole piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410145453.3A CN103956273B (en) | 2014-04-11 | 2014-04-11 | Method for manufacturing electrode pieces for supercapacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145453.3A CN103956273B (en) | 2014-04-11 | 2014-04-11 | Method for manufacturing electrode pieces for supercapacitors |
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| Publication Number | Publication Date |
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| CN103956273A CN103956273A (en) | 2014-07-30 |
| CN103956273B true CN103956273B (en) | 2017-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108390016A (en) * | 2018-02-13 | 2018-08-10 | 广州广华精容能源技术有限公司 | A kind of preparation method of high resiliency porous electrode |
| CN112978714A (en) * | 2021-02-07 | 2021-06-18 | 东华大学 | Nitrogen-doped carbon nanotube aerogel material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710537A (en) * | 2009-12-09 | 2010-05-19 | 上海奥威科技开发有限公司 | Electrode for super capacitor and manufacturing method thereof |
| CN102360960A (en) * | 2011-10-14 | 2012-02-22 | 渤海大学 | Super capacitor electrode material and super capacitor electrode production method |
| CN102576611A (en) * | 2009-09-30 | 2012-07-11 | 日本贵弥功株式会社 | Electric double-layer capacitor, and current collector for electric double-layer capacitor |
| CN102637531A (en) * | 2012-03-20 | 2012-08-15 | 深圳市今朝时代新能源技术有限公司 | Electrode of supercapacitor, preparation method of electrode and preparation method of slurry of electrode |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060153972A1 (en) * | 2003-02-25 | 2006-07-13 | Yoshitsugu Hirokawa | Method of manufacturing electrode for electrochemical device |
| JP2007194024A (en) * | 2006-01-18 | 2007-08-02 | Mitsui Mining & Smelting Co Ltd | Current collector and electrode used for energy-storing element |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576611A (en) * | 2009-09-30 | 2012-07-11 | 日本贵弥功株式会社 | Electric double-layer capacitor, and current collector for electric double-layer capacitor |
| CN101710537A (en) * | 2009-12-09 | 2010-05-19 | 上海奥威科技开发有限公司 | Electrode for super capacitor and manufacturing method thereof |
| CN102360960A (en) * | 2011-10-14 | 2012-02-22 | 渤海大学 | Super capacitor electrode material and super capacitor electrode production method |
| CN102637531A (en) * | 2012-03-20 | 2012-08-15 | 深圳市今朝时代新能源技术有限公司 | Electrode of supercapacitor, preparation method of electrode and preparation method of slurry of electrode |
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Address after: Two No. 3, 122000 hi tech Zone, Liaoning, Chaoyang City Applicant after: IAONING BROTHER ELECTRONICS TECHNOLOGY CO., LTD. Address before: Two No. 3, 122000 hi tech Zone, Liaoning, Chaoyang City Applicant before: BROTHER TECHNOLOGIES CO., LTD. |
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Denomination of invention: A preparation method of electrode plate for supercapacitor Effective date of registration: 20210701 Granted publication date: 20170125 Pledgee: Chaoyang science and technology Financing Guarantee Co.,Ltd. Pledgor: LIAONING BROTHER ELECTRONICS TECHNOLOGY Co.,Ltd. Registration number: Y2021210000041 |