CN101964258A - Method for preparing porous molding charcoal for super capacitor electrode - Google Patents
Method for preparing porous molding charcoal for super capacitor electrode Download PDFInfo
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- CN101964258A CN101964258A CN2010102419971A CN201010241997A CN101964258A CN 101964258 A CN101964258 A CN 101964258A CN 2010102419971 A CN2010102419971 A CN 2010102419971A CN 201010241997 A CN201010241997 A CN 201010241997A CN 101964258 A CN101964258 A CN 101964258A
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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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 preparing porous molding charcoal for a super capacitor electrode. The porous molding charcoal is prepared from wood blocks by a direct carbonization method, and the porous molding charcoal electrode material with high capacity is prepared by chemical modification; the prepared porous molding charcoal can be directly used as the super capacitor electrode material without addition of additives, such as graphite, polymer adhesive and the like, so that the conductivity of the electrode is not influenced; meanwhile, because a lamination process is eliminated, the microstructure and the surface appearance of an active substance can be completely maintained, and the output specific capacity of the capacitor is not reduced due to the damage to the material structure.
Description
Technical field
The present invention relates to be used for the preparation method of the charcoal of electrode of super capacitor.
Background technology
Ultracapacitor is a kind of novel energy-storing device between battery and traditional capacitor that occurs in recent years, but because of it has that specific power is big, the light weight fast charging and discharging, have extended cycle life, serviceability temperature wide ranges and pollute plurality of advantages such as little and be subjected to extensive concern.Ultracapacitor mainly is divided into electric double layer type ultracapacitor and oxidation-reduction type ultracapacitor.Mainly by the surface area decision of material, its theoretical capacity is directly proportional with the specific area of electrode material the specific capacity of electric double layer type ultracapacitor.Mainly be to do electrode material by employing active carbon or carbon nano-tube at present, its specific capacity can reach 200F/g.With pure active carbon or carbon nano-tube ultracapacitor as electrode because the wettability of material with carbon element in the aqueous solution is relatively poor, its low specific capacity problem become restriction its as electrode material for super capacitor and the extensive bottleneck factor of using.
At present, artificial synthesizing porous forming charcoal material can have graded porous structure, not only can directly be used as electrode material, and it is compound also to can be used as carrier and metal oxide and hydroxide, is prepared into combination electrode material.But so far, the preparation technology of artificial synthesizing porous carbon is still complicated, and cost is higher, and the silicon template is difficult to remove clean, and conductivity is difficult for improving, thereby is unfavorable for large-scale industrial production and practical application.
Summary of the invention
The purpose of this invention is to provide a kind of preparation method who is used for the porous, shaped charcoal of electrode of super capacitor.
The present invention is the preparation method who is used for the porous, shaped charcoal of electrode of super capacitor, adopts the wooden unit direct carborization to prepare porous, shaped charcoal, prepares the porous, shaped charcoal electrode material with high power capacity by chemical modification then, and its concrete steps are:
(1) wooden unit being cut into length respectively is the rectangular-shaped of 2cm, 1cm, 0.3cm; And be transferred to crucible, place tube furnace;
(2) utilize vacuum pump that the air in the quartz ampoule is extracted out, make and press in it less than 10Pa; In vacuum-pumping tube, feed inertia N then
2To normal pressure, and continue ventilation with the gas flow of 70～80mL/s;
(3) heating rate with 3 ℃/min begins to be warming up to 900 ℃ of pipe Nei Wenduda, and is incubated 6 hours, makes the wooden unit carbonization, promptly obtains porous, shaped charcoal;
(4) the porous, shaped charcoal that will prepare is transferred in the round-bottomed flask, and adding concentration is the salpeter solution of 2mol/L, and 80 ℃ of constant temperature refluxed 2 hours; Rinse well with deionized water the cooling back; Can directly be used as electrode material 80 ℃ of oven dry.
The source of material therefor of the present invention is abundant, and manufacture craft is simple and have graded porous structure, and the super capacitor excellent performance can reach 160F/g after chemical modification, be suitable for large-scale production and application.In addition, prepared porous, shaped charcoal both can directly be used as electrode material for super capacitor, did not need to add additives such as graphite and polymeric binder, thereby can not influence the conductivity of electrode.Owing to avoided the compressing tablet process, the microstructure of active material and surface topography can both intactly keep, and the output specific capacity of capacitor is reduced because of its material structure is destroyed simultaneously.
Embodiment
Implementation step of the present invention is: it is the rectangular-shaped of 2cm, 1cm, 0.3cm respectively that wooden unit is cut into length, places tube furnace 900 ℃ of charings under nitrogen protection to make porous, shaped charcoal in 6 hours then.Prepared porous, shaped charcoal adopts the 2mol/L salpeter solution to carry out chemical modification, promptly in the 2mol/L salpeter solution 80 ℃ refluxed 2 hours.Clean after the modification with distilled water flushing, can directly prepare finished electrode in 80 ℃ of oven dry as electrode material.
The said wooden unit of the present invention is one or more in pine, cypress, Chinese toon wood, apricot wood, poplar, ash and the Chinese parasol tree trees.
Porous, shaped charcoal material by above method preparation can directly be used as electrode material for super capacitor., insert porous, shaped charcoal and fix as lead with platinum filament, can obtain finished electrode with conducting resinl.Ultracapacitor adopts the asymmetry constructional device, and positive pole is that negative pole is an absorbent charcoal material by the finished electrode of porous, shaped charcoal material making, and electrode diaphragm is a kind of in microporous polypropylene membrane and the polyvinyl alcohol film, and electrolyte is 2mol/L potassium hydroxide alkali lye.
The specific embodiment of the present invention:
(1) wooden unit being cut into length respectively is the rectangular-shaped of 2cm, 1cm, 0.3cm;
(2) above-mentioned wood particle is transferred in the crucible, and places tube furnace;
(3) utilize vacuum pump that the air in the quartz ampoule is extracted out, make and press in it less than 10Pa;
(4) in vacuum-pumping tube, feed inertia N
2To normal pressure, be 70～80mL/s with mass flowmenter control gaseous flow then;
(5) heating rate with 3 ℃/min begins to be warming up to 900 ℃ of pipe Nei Wenduda, and is incubated 6 hours, makes the wooden unit carbonization, promptly obtains porous, shaped charcoal.
(6) the porous, shaped charcoal that will prepare is transferred in the round-bottomed flask, and adding concentration is the salpeter solution of 2mol/L, and 80 ℃ of constant temperature refluxed 2 hours.The cooling back is washed for several times with redistilled water, and places redistilled water to soak 1 hour.80 ℃ of oven dry can directly be used as electrode material.
Claims (2)
1. the preparation method who is used for the porous, shaped charcoal of electrode of super capacitor adopts the wooden unit direct carborization to prepare porous, shaped charcoal, prepares the porous, shaped charcoal electrode material with high power capacity by chemical modification then, and its concrete steps are:
(1) wooden unit being cut into length respectively is the rectangular-shaped of 2cm, 1cm, 0.3cm; And be transferred to crucible, place tube furnace;
(2) utilize vacuum pump that the air in the quartz ampoule is extracted out, make and press in it less than 10Pa; In vacuum-pumping tube, feed inertia N then
2To normal pressure, and continue ventilation with the gas flow of 70～80mL/s;
(3) heating rate with 3 ℃/min begins to be warming up to 900 ℃ of pipe Nei Wenduda, and is incubated 6 hours, makes the wooden unit carbonization, promptly obtains porous, shaped charcoal;
(4) the porous, shaped charcoal that will prepare is transferred in the round-bottomed flask, and adding concentration is the salpeter solution of 2mol/L, and 80 ℃ of constant temperature refluxed 2 hours; Rinse well with deionized water the cooling back; Can directly be used as electrode material 80 ℃ of oven dry.
2. the preparation method who is used for the porous, shaped charcoal of electrode of super capacitor according to claim 1 is characterized in that: described wooden unit is a pine, perhaps cypress, perhaps Chinese toon wood, perhaps apricot wood, perhaps ash, perhaps willow, perhaps Chinese parasol tree tree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102419971A CN101964258A (en) | 2010-07-29 | 2010-07-29 | Method for preparing porous molding charcoal for super capacitor electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102419971A CN101964258A (en) | 2010-07-29 | 2010-07-29 | Method for preparing porous molding charcoal for super capacitor electrode |
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| CN101964258A true CN101964258A (en) | 2011-02-02 |
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| CN2010102419971A Pending CN101964258A (en) | 2010-07-29 | 2010-07-29 | Method for preparing porous molding charcoal for super capacitor electrode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101296102B1 (en) | 2008-12-18 | 2013-08-19 | 차이나 아이더블유엔콤 씨오., 엘티디 | Method for protecting the first message of security protocol |
| CN107606593A (en) * | 2017-08-11 | 2018-01-19 | 桂林电子科技大学 | A kind of steam raising plant based on surface local photothermal deformation |
| CN109607698A (en) * | 2019-01-07 | 2019-04-12 | 大连理工大学 | The method for being used to prepare the smooth porous, shaped carbon electrode of bulk |
| CN110379646A (en) * | 2019-07-25 | 2019-10-25 | 中南林业科技大学 | A kind of preparation method based on two selenizing molybdenums/charcoal Asymmetric Supercapacitor |
| CN111362250A (en) * | 2020-03-16 | 2020-07-03 | 四川大学 | High specific capacitance super-thick biochar, biochar monolithic electrode and biochar composite electrode |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554102A (en) * | 2000-11-27 | 2004-12-08 | Electrochemical double-layer energy storage cells with high energy density and high power density | |
| CN101177266A (en) * | 2007-11-29 | 2008-05-14 | 同济大学 | Preparation method of active carbon electrode material for super capacitor |
| CN101778794A (en) * | 2007-02-14 | 2010-07-14 | 肯塔基大学研究基金会 | Form the method for activated carbon |
-
2010
- 2010-07-29 CN CN2010102419971A patent/CN101964258A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554102A (en) * | 2000-11-27 | 2004-12-08 | Electrochemical double-layer energy storage cells with high energy density and high power density | |
| CN101778794A (en) * | 2007-02-14 | 2010-07-14 | 肯塔基大学研究基金会 | Form the method for activated carbon |
| CN101177266A (en) * | 2007-11-29 | 2008-05-14 | 同济大学 | Preparation method of active carbon electrode material for super capacitor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101296102B1 (en) | 2008-12-18 | 2013-08-19 | 차이나 아이더블유엔콤 씨오., 엘티디 | Method for protecting the first message of security protocol |
| CN107606593A (en) * | 2017-08-11 | 2018-01-19 | 桂林电子科技大学 | A kind of steam raising plant based on surface local photothermal deformation |
| CN109607698A (en) * | 2019-01-07 | 2019-04-12 | 大连理工大学 | The method for being used to prepare the smooth porous, shaped carbon electrode of bulk |
| CN110379646A (en) * | 2019-07-25 | 2019-10-25 | 中南林业科技大学 | A kind of preparation method based on two selenizing molybdenums/charcoal Asymmetric Supercapacitor |
| CN111362250A (en) * | 2020-03-16 | 2020-07-03 | 四川大学 | High specific capacitance super-thick biochar, biochar monolithic electrode and biochar composite electrode |
| CN111362250B (en) * | 2020-03-16 | 2023-08-01 | 四川大学 | High specific capacitance super-thick biochar, biochar single-chip electrode and biochar composite electrode |
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Application publication date: 20110202 |