CN106876162A - A kind of lithium ion super capacitor - Google Patents
A kind of lithium ion super capacitor Download PDFInfo
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- CN106876162A CN106876162A CN201510930479.3A CN201510930479A CN106876162A CN 106876162 A CN106876162 A CN 106876162A CN 201510930479 A CN201510930479 A CN 201510930479A CN 106876162 A CN106876162 A CN 106876162A
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- Prior art keywords
- lithium ion
- super capacitor
- ion super
- barrier film
- collector
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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 present invention relates to a kind of lithium ion super capacitor, including positive pole, barrier film, also including collector, positive pole and collector are respectively placed in the side of barrier film two, and positive pole and collector are mutually amplexiformed with barrier film.By the lithium ion super capacitor of assembling of the invention, compared with current lithium ion super capacitor, no matter in terms of energy density mode power density, there is sizable lifting, compared with current lithium ion battery, while power density advantage is kept, can be reached in terms of energy density or close to lithium ion battery level, so great use value.
Description
Technical field
The present invention relates to electrochemical energy storage field, a kind of lithium ion super capacitor is particularly related to.
Background technology
Lithium ion super capacitor as a kind of energy storage device, with safe, long service life, power
High the advantages of, it combines the advantage of common double layer capacitor and lithium ion battery, so mobile logical
There is more preferable application prospect in the fields such as news, startup power supply, stand-by power supply.
Lithium ion super capacitor has the characteristics that：(1) for lithium ion battery, possess higher
Power density, in high current application scenario particularly high energy pulse environment, can better meet power will
Ask.(2) the charge and discharge cycles time is very short, far smaller than the charge and discharge circulation time of battery.(3) battery makes
With long lifespan, need not safeguard all the life.(4) running temperature it is wide can in the range of -45~85 DEG C normal work
Make.
One electrode of lithium-ion capacitor is used using energy density li-ion electrode materials higher, another pole
Absorbent charcoal material with electric double layer energy storage.Absorbent charcoal material can be as negative material, it is also possible to used as just
Pole material.Usually, for energy density higher, electrolyte improves lithium ion using organic system
The operating voltage of capacitor.
Although lithium-ion capacitor is using the electrode material of high-energy-density, still there is continuation to improve lithium ion
The space of super capacitor energy density.
The content of the invention
Energy density in order to further improve lithium ion super capacitor of the invention, increases its practicality, carries
For a kind of lithium ion super capacitor of high-energy-density, and its assemble method.
To achieve the above object, the concrete technical scheme that the present invention is used is as follows：
A kind of lithium ion super capacitor, including positive pole, barrier film, also including collector, positive pole and collector
The side of barrier film two is respectively placed in, positive pole and collector are mutually amplexiformed with barrier film.Positive pole, collector, barrier film are submerged
The lithium ion super capacitor of high-energy-density is constituted in the electrolytic solution.
Described collector is sheet, netted or foam-like, and described metal material is for one in copper, aluminium, nickel
Kind or more than two kinds of alloy.
Positive pole is mixed with by activated carbon, conductive agent, adhesive and formed, and the method for preparation includes coating, rolls
Pressure is sprayed, and the surface density of activated carbon is：0.1-100mgcm-2, wherein being preferably 1-30mgcm-2,
The surface density of conductive agent is：0.01-20mgcm-2, wherein being preferably 0.1-10mgcm-2, adhesive
Surface density is 0.01-20mgcm-2, wherein being preferably 0.1-10mgcm-2；
Described barrier film is polyethylene diagrams, polypropylene diaphragm, polyethylene and polypropylene composite materials barrier film, fiber
Plain barrier film, glass fibre element barrier film or ceramic membrane.
Described electrolyte, including solvent and salt；
Described solvent includes dimethyl carbonate, diethyl carbonate, propene carbonate, ethylene carbonate, second
One kind in glycol dimethyl ether, dioxolanes, tetraethyleneglycol dimethylether, GBL etc. or two kinds
It is mixed above to form；
Wherein it is preferred that volume ratio is 4：1-1：4 dimethyl carbonate, diethyl carbonate, propylene carbonate
Any two kinds of combinations of ester and volume ratio are 4：1-1：The combination of 4 glycol dimethyl ether and dioxolanes；
Preferred volume ratio is 1：1 combination.
Described salt includes LiN (SO3CF3)2、LiN(SO3CF2CF3)2、LiSO3CF3、LiBr、LiI、
LiPF6, one kind in LiBOB or more than two kinds；Wherein it is preferred that LiN (SO3CF3)2、LiSO3CF3、
One kind in LiBOB or more than two kinds, concentration 0.1-10molL-1。
The beneficial effects of the invention are as follows：
1st, there is no active material because the negative pole for using only has collector, maximum lithium ion will be obtained
The energy density of ultracapacitor.
2nd, negative pole directly carries out lithium metal deposition or dissolving, for the negative poles such as lithium titanate, graphite,
With lower current potential, the operating voltage of lithium ion super capacitor can be effectively improved, and then improve battery energy
Metric density.
The energy density of the lithium ion super capacitor device prepared by the present invention can reach 30Whkg-1With
On, power density is 10KWkg-1More than.
By the lithium ion super capacitor of assembling of the invention, compared with current lithium ion super capacitor,
No matter in terms of energy density mode power density, there is sizable lifting, with current lithium ion battery
Compare, while power density advantage is kept, can be reached in terms of energy density or close to lithium-ion electric
Water is put down, so great use value.
Brief description of the drawings
Fig. 1 is the charge-discharge performance of ultracapacitor.
Specific embodiment
Embodiment 1
Lithium ion super capacitor proposed by the present invention can be implemented in the following manner：
The positive pole of lithium ion super capacitor can be prepared using rubbing method.First by activated carbon, conductive agent, gather
Vinylidene, according to 8：1：After 1 mass ratio is well mixed, 1-METHYLPYRROLIDONE (NMP) is added,
The solid content of electrode slurry is 15%, well mixed electrode slurry is coated in aluminum foil current collector, 70
Degree Celsius drying 12 hours, vacuum drying, it is standby.
The negative pole of lithium ion super capacitor is using only Copper Foil.
Salt is LiPF in the electrolyte of lithium ion super capacitor6, solvent is propene carbonate and carbonic acid diformazan
(volume ratio is 1 to ester：1), salinity is 1molL-1。
After positive pole, polypropylene diaphragm, Copper Foil are fitted together successively, electrolyte post package is filled.Filling
Electrolyte is 4 with the mass ratio of activated carbon：1.Test lithium ion super capacitor performance.
The charge-discharge procedures of lithium ion super capacitor are as follows.Discharge and recharge blanking voltage is 3.3V-4.8V,
Charging and discharging currents are 1Ag- 1 activated carbon.The charge-discharge performance of ultracapacitor is as shown in Figure 1.
Embodiment 2
Lithium ion super capacitor proposed by the present invention can be implemented in the following manner：
The negative pole of lithium ion super capacitor is using only foam copper.
The positive pole of lithium ion super capacitor can be prepared using rubbing method.First by activated carbon, conductive agent, carboxylic
Sodium carboxymethylcellulose pyce, butadiene-styrene rubber, according to 8.5：1：0.25：After 0.25 mass ratio is well mixed, plus
Enter a certain amount of deionized water, the solid content of electrode slurry is 30%, and well mixed electrode slurry is coated
In aluminum foil current collector, 50 degrees Celsius dry 12 hours, and vacuum drying is standby.
Solvent in the electrolyte of lithium ion super capacitor is propene carbonate and dimethyl carbonate (volume ratio
It is 1：1), salt 1 is LiPF6, the concentration of salt 1 is 1molL-1, salt 2 is tetraethylammonium tetrafluoroborate, salt
2 concentration is 1molL-1。
After positive pole, polypropylene diaphragm, Copper Foil are fitted together successively, electrolyte post package, filling are filled
Electrolyte is 4 with the mass ratio of activated carbon：1.
The charge-discharge procedures of lithium ion super capacitor are as follows.Discharge and recharge blanking voltage is 3.0V-4.0V,
Charging and discharging currents are 1Ag-1Activated carbon.
Claims (6)
1. a kind of lithium ion super capacitor, including positive pole, barrier film, it is characterised in that：
Also include collector, positive pole and collector are respectively placed in the side of barrier film two, positive pole and collector and barrier film
Mutually amplexiform.
2. according to the lithium ion super capacitor described in claim 1, it is characterised in that：
Positive pole, collector, barrier film are submerged in the lithium ion super electricity of composition high-energy-density in electrolyte
Container.
3. according to the lithium ion super capacitor described in claim 1, it is characterised in that：
Described collector is sheet, netted or foam-like, and described metal material is in copper, aluminium, nickel
The alloy of one or two or more kinds.
4. according to the lithium ion super capacitor described in claim 1, it is characterised in that:
Positive pole is mixed with by activated carbon, conductive agent, adhesive and formed, the method for preparation include coating,
Roll pressure or spray, the surface density of activated carbon is：0.1-100mgcm-2, wherein being preferably 1-30mgcm-2,
The surface density of conductive agent is：0.01-20mgcm-2, wherein being preferably 0.1-10mgcm-2, adhesive
Surface density be 0.01-20mgcm-2, wherein being preferably 0.1-10mgcm-2。
5. according to the lithium ion super capacitor described in claim 1, it is characterised in that:Described barrier film
It is polyethylene diagrams, polypropylene diaphragm, polyethylene and polypropylene composite materials barrier film, cellulosic separator, glass
Cellulosic separator or ceramic membrane.
6. according to the lithium ion super capacitor described in claim 2, it is characterised in that:Described electrolysis
Liquid, including solvent and salt；
Described solvent include dimethyl carbonate, diethyl carbonate, propene carbonate, ethylene carbonate,
One kind in glycol dimethyl ether, dioxolanes, tetraethyleneglycol dimethylether, GBL etc. or
Two kinds mixed above to form；
Wherein it is preferred that volume ratio is 4：1-1：4 dimethyl carbonate, diethyl carbonate, carbonic acid third
Any two kinds of combinations of alkene ester and volume ratio are 4：1-1：4 glycol dimethyl ether and the group of dioxolanes
Close；
Described salt includes LiN (SO3CF3)2、LiN(SO3CF2CF3)2、LiSO3CF3、LiBr、LiI、
LiPF6, one kind in LiBOB or more than two kinds；Wherein it is preferred that LiN (SO3CF3)2、
LiSO3CF3, one kind in LiBOB or more than two kinds, concentration 0.1-10molL-1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930479.3A CN106876162A (en) | 2015-12-14 | 2015-12-14 | A kind of lithium ion super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930479.3A CN106876162A (en) | 2015-12-14 | 2015-12-14 | A kind of lithium ion super capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN106876162A true CN106876162A (en) | 2017-06-20 |
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| CN201510930479.3A Pending CN106876162A (en) | 2015-12-14 | 2015-12-14 | A kind of lithium ion super capacitor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140829A (en) * | 2006-09-04 | 2008-03-12 | 富士重工业株式会社 | Lithium-ion capacitor |
| CN101504989A (en) * | 2009-03-06 | 2009-08-12 | 清华大学 | Titanium oxide energy accumulation cell with high power and high energy |
| CN101515507A (en) * | 2009-03-27 | 2009-08-26 | 桂林工学院 | A hybrid super capacitor and a method for preparing the same |
| US20120212879A1 (en) * | 2011-02-23 | 2012-08-23 | Linghong Li | High energy hybrid supercapacitors using lithium metal powders |
| CN104919641A (en) * | 2013-01-23 | 2015-09-16 | 宇部兴产株式会社 | Non-aqueous electrolyte and electricity storage device |
-
2015
- 2015-12-14 CN CN201510930479.3A patent/CN106876162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140829A (en) * | 2006-09-04 | 2008-03-12 | 富士重工业株式会社 | Lithium-ion capacitor |
| CN101504989A (en) * | 2009-03-06 | 2009-08-12 | 清华大学 | Titanium oxide energy accumulation cell with high power and high energy |
| CN101515507A (en) * | 2009-03-27 | 2009-08-26 | 桂林工学院 | A hybrid super capacitor and a method for preparing the same |
| US20120212879A1 (en) * | 2011-02-23 | 2012-08-23 | Linghong Li | High energy hybrid supercapacitors using lithium metal powders |
| CN104919641A (en) * | 2013-01-23 | 2015-09-16 | 宇部兴产株式会社 | Non-aqueous electrolyte and electricity storage device |
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Application publication date: 20170620 |