CN101656155A - Method for making high-capacity organic ultracapacitor in flexible package - Google Patents
Method for making high-capacity organic ultracapacitor in flexible package Download PDFInfo
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- CN101656155A CN101656155A CN200910183500A CN200910183500A CN101656155A CN 101656155 A CN101656155 A CN 101656155A CN 200910183500 A CN200910183500 A CN 200910183500A CN 200910183500 A CN200910183500 A CN 200910183500A CN 101656155 A CN101656155 A CN 101656155A
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Abstract
The invention discloses a method for making a high-capacity organic ultracapacitor in flexible package. The method comprises the following steps: making positive and negative pole pieces by taking active carbon as a main active substance, and taking etched aluminum foil or glazed aluminum foil as current collectors; overlapping the positive and negative pole pieces coated with the active substances and membranes one by one and made into pole groups, and leading out pole lugs; using an aluminum-plastic membrane as a casing, filling electrolyte into the casing, and making the high-capacity organic ultracapacitor in flexible package. The single capacity of the organic ultracapacitor obtained in the method can reach more than 4000F, and the peak power can reach more than 8000w/kg.
Description
Technical field
The invention belongs to the ultracapacitor technical field, be specifically related to a kind of method for making high-capacity organic ultracapacitor in flexible package.
Background technology
Ultracapacitor (S μ percapacitor or μ ltra capacitor) claim capacitor with super capacity or electrochemical capacitor again, is a kind of novel energy-storing device between traditional capacitor and battery.Compare with traditional capacitor, ultracapacitor has that capacity is bigger and energy density is higher, and its capacity can reach farad (F) even thousands of farad, and traditional capacitor has only microfarad (μ F) level; Compare with battery, ultracapacitor has higher power density and longer cycle life, can realize high current charge-discharge, and operating temperature range can reach-40～+ 75 ℃, has become the focus of countries in the world research and development.
The ability of ultracapacitor store charge is strong, and have that the speed of discharging and recharging is fast, efficient is high, environmentally safe, have extended cycle life, characteristics such as serviceability temperature wide ranges, fail safe height.Because of it has high-specific-power, big electric capacity and characteristics such as have extended cycle life, have broad application prospects in fields such as Aero-Space, military industry field, automobile industry, the communications field, instrument and meter, consumer electronics, electronic toys.
According to the electrolyte classification, ultracapacitor can be divided into inorganic type ultracapacitor and organic type ultracapacitor two big classes.The former generally is solvent with water, and sulfuric acid or potassium hydroxide are electrolyte, monomer operating voltage low (having only about 1.5V), and stronger corrosivity is arranged; The latter is that solvent, tetraethylammonium tetrafluoroborate are electrolyte with ethylene carbonate, propene carbonate etc. generally, monomer operating voltage height (reaching more than the 2.5V), and the energy storage density height is a ultracapacitor development trend from now on.
According to the shell classification of adopting, ultracapacitor has metal-back and aluminum plastic film (being flexible package) two big classes.Because metal-back weight is bigger, specific energy and specific power are relatively low, thus in recent years the consumption of aluminum plastic film organic type ultracapacitor in continuous increase.But the monomer capacity of widely used in the market aluminum plastic film organic type ultracapacitor generally below 500F, have only below the 4500w/kg, is difficult to satisfy the instructions for use of large-capacity high-power by the discharge specific power.
Summary of the invention
The object of the present invention is to provide a kind of method for making high-capacity organic ultracapacitor in flexible package, satisfying the large-capacity high-power instructions for use, and be convenient to make, the reliability height.
For achieving the above object, the invention provides a kind of by positive/negative plate, barrier film, electrolyte, lug, the manufacture method of the high-capacity organic ultracapacitor in flexible package that aluminum plastic film shell etc. are formed, wherein positive/negative plate adopts stacked technology, concrete steps are as follows: with active carbon as main active substances, make positive/negative plate with corrosive aluminum foil or light face aluminium foil as collector, to scribble the positive/negative plate of active material and barrier film then superposes one by one and makes utmost point group and draw lug, with aluminum plastic film as shell, after injecting electrolyte, make the monomer high-capacity organic ultracapacitor in flexible package.
The present invention will be coated in as the anode and cathode slurry of main active substances with active carbon and make positive/negative plate on the electrode matrix, then positive/negative plate and barrier film are superposeed one by one and make utmost point group, again utmost point group is packed in the aluminum plastic film shell and draw lug, in the aluminum plastic film shell, inject electrolyte at last, promptly make the organic electrochemical capacitance of monomer.The mode that utmost point group's lamination adopts positive plate, negative plate and barrier film to superpose one by one, concrete as positive plate, barrier film, negative plate, barrier film ... be recycled to last pole piece with this, perhaps adopt negative plate, barrier film, positive plate, barrier film ..., be recycled to last pole piece with this.
Wherein active carbon adopts bamboo carbon or coconut carbon to make.
Electrode matrix (being collector) adopts corrosivity aluminium foil or light face aluminium foil, and the thickness of electrode matrix is 15～50 μ m, and lug adopts aluminium flake, nickel sheet or aluminium nickel sheet, and its width is 60mm～150mm, and the way of output is two ends or homonymy output.
The content of active carbon is 60～92wt.% in the both positive and negative polarity active material, and the content of conductive black is 2～7wt.%, and the content of LA132, PVDF or PTFE is 0.2～5wt.%, and the content of CMC is 1～3wt.% (each component sum satisfies 100%).
Above-mentioned each active material adds suitable quantity of water or NMP is mixed into anode and cathode slurry, is coated in then on the electrode matrix, and the single face thickness that is coated to pole piece reaches 65～100 μ m and gets final product.Generally earlier that active carbon and conductive black is dried mixed when making anode and cathode slurry, add other materials that mix by water or NMP again, be stirred to the viscosity that is fit to coating.Also all the components can be added entry or NMP and be mixed together the viscosity that is stirred to suitable coating.
Apply the back oven dry on the electrode matrix, then pole piece is cut into the size that needs, and die-cut or soldering polar ear.
Barrier film adopts PP film, PE film or PP/PE film.
Positive/negative plate adopts stacked technology, and soon positive/negative plate and barrier film progressively superpose and make utmost point group.The number of positive/negative plate can be as required the parameter decision of concrete ultracapacitor, lamination not have the number requirement fixed, mainly is the size of pole piece, the big more quantity of pole piece is few more; Adopt each 40 of positive/negative plates can reach monomer capacity 4000F in the embodiments of the invention.The present invention can make electrochemical capacitance have the peak value specific power by the cooperation of stacked technology and the design of wide extreme ear structure and other technologies, and its peakedness ratio power can reach more than the 9600w/kg.
Electrolyte adopts one or both in tetraethylammonium tetrafluoroborate or the tetrafluoro boric acid methyl triethyl ammonium in the electrolyte, and solvent generally adopts ethylene carbonate and carbonic acid diethyl ester.Electrolytical consumption can convert from the total amount of its concentration and reservoir quantity, and all the other then are the consumption of solvent; Generally adopt method of equal proportion with magnitude relation between the double solvents.
As shell, ultracapacitor adopts the metal aluminum hull substantially at present with aluminum plastic film in the present invention, and the present invention adopts the aluminum plastic film packing to make electrochemical capacitance can obviously alleviate its weight, improves specific power; Adopt stacked rather than takeup type technology making utmost point group, can obviously reduce internal resistance, improve specific power.
The present invention adopts wide lug, can improve the monomer discharging current, and then improves specific power, and organic electrochemical capacitance peakedness ratio power can reach more than the 8000w/kg; Utmost point group takeup type technology is difficult to make big capacity electrochemical capacitance, generally below 500F; And the present invention adopts stacked making, then can make the above jumbo monomer electrochemical capacitance of monomer capacity 4000F.
Embodiment
Embodiment 1
87wt.% active carbon, 8wt.% conductive black are done mixed 1～2h, simultaneously 5wt.%PVDF, an amount of NMP are mixed 2～3h in another container, then the mixture of PVDF and NMP is poured into and continued in the mixture of active carbon and conductive black to stir 5～6h, after reaching required viscosity, stop to stir.Mixed mixture is coated on the corrosive aluminum foil that thickness is 30 μ m, control pole piece single face thickness is 80 μ m, after the oven dry pole piece is cut into the size of 160mm (W) * 270mm (L), and on the 270mm length direction, punch out 80mm (W) * 80mm (L) lug, as positive plate.
85wt.% active carbon, 7wt.% conductive black are done mixed 1～2h, simultaneously 5wt.%LA132,3wt.%CMC and an amount of water are mixed 2～3h in another container, then the mixture of LA132, CMC is poured into and continued in the mixture of active carbon and conductive black to stir 5～6h, after reaching required viscosity, stop to stir.Mixed mixture is coated on the corrosive aluminum foil that thickness is 30 μ m, control pole piece single face thickness is 80 μ m, after the oven dry pole piece is cut into the size of 162mm (W) * 272mm (L), and on the 272mm length direction, punch out 80mm (W) * 80mm (L) lug, the position of lug and the lug of positive plate are staggered, the lug spacing is controlled at 50mm, as negative plate.
Adopt individual layer PP film as barrier film, get after each 40 mode according to positive plate, barrier film, negative plate, barrier film of die-cut good positive/negative plate progressively superpose, with the fixing end of barrier film of high temperature gummed tape, as utmost point group; Then utmost point group is encapsulated in the aluminum plastic film shell, draws lug and adopt aluminium nickel sheet, homonymy output (see figure 1).
Adopting the tetraethylammonium tetrafluoroborate of 1.0mol/L is solvent as electrolyte, ethylene carbonate and diethyl carbonate, and reservoir quantity is controlled at 185g, and promptly the capacity of can be made into is the organic electrochemical capacitance of monomer of 4000F, and its peakedness ratio power is more than 8700w/kg.
Embodiment 2
87wt.% active carbon, 8wt.% conductive black, 5wt.%PTFE, suitable quantity of water are mixed 5～6h, stop to stir after reaching required viscosity.Mixed mixture is coated on the light face aluminium foil that thickness is 30 μ m, control pole piece single face thickness is 150 μ m, after the oven dry pole piece is cut into the size of 120mm (W) * 200mm (L), and on the 200mm length direction, punch out 60mm (W) * 60mm (L) lug, as positive plate.
85wt.% active carbon, 7wt.% conductive black are done mixed 1～2h, simultaneously 5wt.%LA132,3wt.%CMC and suitable quantity of water are mixed 2～3h in another container, then the mixture of LA132, CMC is poured into and continued in the mixture of active carbon and conductive black to stir 5～6h, after reaching required viscosity, stop to stir.Mixed mixture is coated on the light face aluminium foil that thickness is 30 μ m, control pole piece single face thickness is 150 μ m, after the oven dry pole piece is cut into the size of 122mm (W) * 202mm (L), and on the 202mm length direction, punch out 60mm (W) * 60mm (L) lug, the position of lug and the lug of positive plate are staggered, the lug spacing is controlled at 50mm, as negative plate.
Adopt individual layer PP and PE composite membrane as barrier film, get after each 40 mode according to positive plate, barrier film, negative plate, barrier film of die-cut good positive/negative plate progressively superpose, with the fixing end of barrier film of high temperature gummed tape, as utmost point group; Then utmost point group is encapsulated in the aluminum plastic film shell, draws lug and adopt aluminium flake, homonymy output (see figure 1).
Adopting the tetraethylammonium tetrafluoroborate of 1.0mol/L is solvent as electrolyte, ethylene carbonate and diethyl carbonate, and reservoir quantity is controlled at 195g, and promptly the capacity of can be made into is the organic electrochemical capacitance of monomer of 4000F, and its peakedness ratio power is more than 8000w/kg.
Embodiment 3
87wt.% active carbon, 8wt.% conductive black are done mixed 1～2h, simultaneously 5wt.%PVDF, an amount of NMP are mixed 2～3h in another container, then the mixture of PVDF and NMP is poured into and continued in the mixture of active carbon and conductive black to stir 5～6h, after reaching required viscosity, stop to stir.Mixed mixture is coated on the corrosive aluminum foil that thickness is 30 μ m, and control pole piece single face thickness is 120 μ m, after the oven dry pole piece is cut into the size of 150mm (W) * 200mm (L), and punches out 100mm (W) * 100mm (L) lug, as positive plate.
85wt.% active carbon, 7wt.% conductive black are done mixed 1～2h, simultaneously 5wt.%LA132,3wt.%CMC and suitable quantity of water are mixed 2～3h in another container, then the mixture of LA132, CMC is poured into and continued in the mixture of active carbon and conductive black to stir 5～6h, after reaching required viscosity, stop to stir.Mixed mixture is coated on the corrosive aluminum foil that thickness is 30 μ m, and control pole piece single face thickness is 120 μ m, after the oven dry pole piece is cut into the size of 152mm (W) * 202mm (L), and punches out 100mm (W) * 100mm (L) lug, as negative plate.
Adopt individual layer PP film as barrier film, get after each 40 mode according to positive plate, barrier film, negative plate, barrier film of die-cut good positive/negative plate progressively superpose, with the fixing end of barrier film of high temperature gummed tape, as utmost point group; Then utmost point group is encapsulated in the aluminum plastic film shell, draws lug and adopt aluminium nickel sheet, two ends output (see figure 2).
Adopting the tetraethylammonium tetrafluoroborate of 1.0mol/L is solvent as electrolyte, ethylene carbonate and diethyl carbonate, and reservoir quantity is controlled at 190g, and promptly the capacity of can be made into is the organic electrochemical capacitance of monomer of 4000F, and its peakedness ratio power is more than 9600w/kg.
Claims (10)
1, a kind of method for making high-capacity organic ultracapacitor in flexible package, it is characterized in that with active carbon as main active substances, make positive/negative plate as collector with corrosive aluminum foil or light face aluminium foil, to scribble the positive/negative plate of active material and barrier film then superposes one by one and makes utmost point group and draw lug, with aluminum plastic film as shell, after injecting electrolyte, make the monomer high-capacity organic ultracapacitor in flexible package.
2, method according to claim 1, the thickness that it is characterized in that described collector are 15～50 μ m.
3, method according to claim 1, the content that it is characterized in that active carbon in the both positive and negative polarity active material is 60～92wt.%, the content of conductive black is 2～7wt.%, and the content of LA132, PVDF or PTFE is 0.2～5wt.%, and the content of CMC is 1～3wt.%.
4, method according to claim 1 is characterized in that active material adopts water or NMP to make anode and cathode slurry.
5, method according to claim 1 is characterized in that described barrier film is PP film, PE film or PP/PE film.
6, method according to claim 1 is characterized in that described lug adopts one or both in aluminium flake, nickel sheet or the aluminium nickel sheet.
7, method according to claim 1 or 5, the width that it is characterized in that described lug is 60mm～150mm.
8, method according to claim 1 or 5, the way of output that it is characterized in that described lug are two ends or homonymy output.
9, method according to claim 1 is characterized in that electrolyte in the electrolyte adopts one or both in tetraethylammonium tetrafluoroborate or the tetrafluoro boric acid methyl triethyl ammonium.
10, method according to claim 1 is characterized in that electrolytical solvent adopts ethylene carbonate and carbonic acid diethyl ester in the electrolyte.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024568A (en) * | 2010-06-30 | 2011-04-20 | 南京双登科技发展研究院有限公司 | Manufacture method of high-capacity inorganic super capacitor electrode plates |
| CN103632858A (en) * | 2012-08-28 | 2014-03-12 | 张家港保税区超威电化技术服务有限公司 | Electrolyte solution and electrochemical component using same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615840Y (en) * | 2003-04-11 | 2004-05-12 | 江苏双登电源有限公司 | Electrochemical super capacitor |
| CN100424796C (en) * | 2003-05-08 | 2008-10-08 | 北京集星联合电子科技有限公司 | Active carbon fibre cloth/sprayed aluminium composite polar plate double-electric layer capacitor and producing method thereof |
| US20070247787A1 (en) * | 2004-07-09 | 2007-10-25 | Osaka Gas Co., Ltd | Activated Carbon for Electric Double Layer Capacitor, Activated Carbon Electrode for Electric Double Layer Capacitor, and an Electric Double Layer Capacitor Using Same |
| CN100589218C (en) * | 2005-09-05 | 2010-02-10 | 哈尔滨工程大学 | Supercapacitor with inner polymerization type gel polymer electrolyte and preparation process thereof |
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2009
- 2009-09-22 CN CN2009101835002A patent/CN101656155B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024568A (en) * | 2010-06-30 | 2011-04-20 | 南京双登科技发展研究院有限公司 | Manufacture method of high-capacity inorganic super capacitor electrode plates |
| CN102024568B (en) * | 2010-06-30 | 2012-06-06 | 南京双登科技发展研究院有限公司 | Manufacture method of high-capacity inorganic super capacitor electrode plates |
| CN103632858A (en) * | 2012-08-28 | 2014-03-12 | 张家港保税区超威电化技术服务有限公司 | Electrolyte solution and electrochemical component using same |
| CN103632858B (en) * | 2012-08-28 | 2016-09-21 | 江苏国泰超威新材料有限公司 | A kind of electrolyte and the electrochemical element of this electrolyte of use |
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Owner name: SHOTO GROUP CO., LTD. Free format text: FORMER OWNER: SHUANGDENG SCIENCE + TECHNOLOGY DEVELOPMENT ACADEMY CO., LTD., NANJING CITY Effective date: 20150730 |
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Effective date of registration: 20150730 Address after: 225500 No. 999 West Tianmu Road, Jiangyan Economic Development Zone, Jiangsu, Taizhou Patentee after: Shoto Group Co., Ltd. Address before: Double, park Liang Xu Zhen 225526 Jiangsu city of Jiangyan province No. 1 Patentee before: Shuangdeng Science & Technology Development Academy Co., Ltd., Nanjing City |