CN205487766U - Lithium ion capacitor - Google Patents
Lithium ion capacitor Download PDFInfo
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- CN205487766U CN205487766U CN201620177141.5U CN201620177141U CN205487766U CN 205487766 U CN205487766 U CN 205487766U CN 201620177141 U CN201620177141 U CN 201620177141U CN 205487766 U CN205487766 U CN 205487766U
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- lithium
- metal foil
- layer
- multicellular metal
- ion capacitor
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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 utility model relates to a condenser. And more particularly, the utility model relates to a lithium ion capacitor includes: the positive pole, it includes a multicellular metal foil and sets up in the active carbon -coating on multicellular metal foil surface, is provided with the fixed bed between a multicellular metal foil and the active carbon -coating, and the left -handed watch face and the right surface of fixed bed all are provided with first recess, and first recess is placed respectively in to a multicellular metal foil and active carbon -coating, the negative pole, it includes that the 2nd multicellular metal foil inlays the lithium layer with setting up in the 2nd multicellular metal foil surface, the diaphragm, it sets up between positive pole and negative pole, electrolyte, it is filled between positive pole and negative pole, inlays to be provided with the lithium lamella between lithium layer and the diaphragm, is provided with the second recess in the middle of the lithium lamella, inlays the lithium stratification in the second recess. The utility model discloses structural distortion's problem easily takes place taking off the in -process that inlays the lithium for the cathode material and the anode material that have avoided lithium ion capacitor, has lengthened lithium ion capacitor's life.
Description
Technical field
This utility model relates to a kind of capacitor.More specifically, this utility model relates to a kind of lithium-ion capacitor.
Background technology
In recent years, lithium rechargeable battery has obtained the biggest development, and this battery cathode generally uses the carbon materialses such as graphite,
Positive pole uses cobalt acid lithium, LiMn2O4 etc. containing lithium metal oxide.After this set of cells is filled with, during charging, positive pole provides to negative pole
Lithium ion, and when electric discharge, the lithium ion of negative pole returns again positive pole, is therefore referred to as " rocking chair type battery ".Golden with using
The lithium battery belonging to lithium is compared, and this battery has high security and the feature of high cycle life.But, due to positive electrode and
Negative material is susceptible to the deformation of structure during removal lithium embedded, and therefore, the cycle life of lithium rechargeable battery is still subject to
To restriction.In recent years, the system that lithium rechargeable battery and double layer capacitor are combined, i.e. lithium-ion capacitor are ground
Study carefully the focus becoming new.The carbon materials such as lithium-ion capacitor general anode material selection graphite, hard carbon, positive electrode is selected
The absorbent charcoal material of electric double layer characteristic, carries out the pre-doping of lithium ion by anticathode material, makes negative pole current potential significantly decline,
Thus improve energy density.But it is easy during removal lithium embedded that this lithium-ion capacitor still suffers from positive electrode and negative material
The problem of the deformation of recurring structure.
Utility model content
A purpose of the present utility model is to solve at least the above, and provides the advantage that at least will be described later.
This utility model also has a purpose to avoid the positive electrode of lithium-ion capacitor and negative material in the process of removal lithium embedded
In the problem of easy recurring structure deformation, extend the service life of lithium-ion capacitor.
In order to realize according to these purposes of the present utility model and further advantage, it is provided that a kind of lithium-ion capacitor, including:
Positive pole, it includes the first multicellular metal foil and is arranged at the activated carbon layer on described first multicellular metal foil surface, described the
Being provided with fixed layer between one multicellular metal foil and described activated carbon layer, described fixed layer is set to " work " font, described solid
The left surface of given layer and right surface are provided with the first groove, and described first multicellular metal foil and activated carbon layer are respectively placed in described
In the left surface of fixed layer and first groove on right surface；
Negative pole, it includes the second multicellular metal foil and is arranged at the embedding lithium layer on described second multicellular metal foil surface；
Barrier film, it is arranged between described positive pole and negative pole, and between described active carbon layer and embedding lithium layer；
Electrolyte, it is filled between described positive pole and negative pole；
Wherein, the left surface of described fixed layer and right surface be provided with multiple through hole not of uniform size, described embedding lithium layer and
Being provided with lithium lamella between described barrier film, be provided with the second groove in the middle of described lithium lamella, described embedding lithium layer is placed in described second
In groove, the periphery of described lithium lamella is provided with multiple fixing foot, and multiple fixing feet are fixed on the sidewall of described barrier film.
Preferably, in described lithium-ion capacitor, doped with conductive material in described fixed layer, described second porous gold
Belong to and be provided with conductive layer between paper tinsel and embedding lithium layer.
Preferably, in described lithium-ion capacitor, described first multicellular metal foil and the length one of the second multicellular metal foil
Cause, the length of described fixed layer, activated carbon layer, barrier film, lithium lamella and embedding lithium layer be respectively less than described first multicellular metal foil or
The length of the second multicellular metal foil.
Preferably, in described lithium-ion capacitor, described first multicellular metal foil, fixed layer, active carbon layer, barrier film,
Lithium lamella, embedding lithium layer and the second multicellular metal foil are placed in a housing, and described electrolyte is filled in the gap of described housing.
Preferably, in described lithium-ion capacitor, described first multicellular metal foil is aluminium foil, described second porous metals
Paper tinsel is Copper Foil.
Preferably, in described lithium-ion capacitor, described barrier film is polyethene microporous membrane, microporous polypropylene membrane, is combined
Any one in film, inorganic ceramic film, paper barrier film, non-woven fabrics barrier film or cellulosic separator.
This utility model at least includes following beneficial effect: when lithium-ion capacitor is installed, first by the first multicellular metal foil and
Second multicellular metal foil is respectively placed in housing, then installs fixed layer, activated carbon layer, barrier film, lithium lamella and embedding lithium layer successively,
And the first multicellular metal foil and activated carbon layer are respectively placed in the left surface of fixed layer and first groove on right surface, embedding lithium layer
It is placed in the second groove of lithium lamella, so that each several part fixation, finally at positive pole and negative pole filling electrolyte and close
Capsule body.Due to fixed layer and the setting of lithium lamella upper groove, the various piece of lithium-ion capacitor is not only simple patch
Close and install, but fix by medium, improve fixing reliability, it is to avoid the positive electrode of lithium-ion capacitor and bear
Pole material is the problem of easy recurring structure deformation during removal lithium embedded, extends the service life of lithium-ion capacitor.
Part is embodied by further advantage of the present utility model, target and feature by description below, and part also will be by this
Research and the practice of utility model and be understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is the assembling figure of described lithium-ion capacitor；
Fig. 2 is the exploded view of described lithium-ion capacitor internal structure.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
Should be appreciated that used herein such as " have ", " comprising " and " including " term are not precluded from one or many
Other element individual or the existence of a combination thereof or interpolation.
As illustrated in fig. 1 and 2, this utility model provides a kind of lithium-ion capacitor, including:
Positive pole 1, it includes the first multicellular metal foil 11 and is arranged at the activated carbon layer 12 on described first multicellular metal foil surface,
Activated carbon layer is active carbon powder, NACF or carbon nanotube etc., and active carbon layer can use such as activated carbon, propylene
The mixture of the dispersant that the bonding agent of acrylic binder composition, carboxymethyl cellulose (CMC) form.Described first porous
Being provided with fixed layer 5 between metal forming and described activated carbon layer, described fixed layer is set to " work " font, due to positive pole and
Negative pole each several part length, therefore fixed layer is not proper " work " font, and the height of possible side is slightly higher
In opposite side, to ensure, the first multicellular metal foil is the most fixing with activated carbon layer, the left surface of described fixed layer and right table
Face is provided with the first groove 51, and described first multicellular metal foil and activated carbon layer are respectively placed in the left surface of described fixed layer
With in first groove on right surface, fixed layer plays the effect simultaneously fixing the first multicellular metal foil and activated carbon layer, simultaneously by
Diapire in the first groove arranges the thinnest, does not interferes with the normal mobile of lithium ion.
Negative pole 2, it includes the second multicellular metal foil 21 and is arranged at the embedding lithium layer 22 on described second multicellular metal foil surface,
Embedding lithium layer can be can embedding lithium metal oxide or carbonaceous intercalation materials of li ions, can embedding lithium metal oxide can be Li-Ti oxide
Li4Ti5O12、WO2Or MoO2Deng, carbonaceous intercalation materials of li ions can be graphite, MCMB or intermediate-phase carbon fiber etc.,
The combination that embedding lithium layer can use such as can seal/discharge the amorphous carbon of lithium ion up for safekeeping, Kynoar (PVDF) is constituted
The mixture of the conductive auxiliary agent such as agent, acetylene carbon black.
Barrier film 3, it is arranged between described positive pole and negative pole, and between described active carbon layer and embedding lithium layer.Barrier film is used
In making positive pole insulate with negative electricity, barrier film allows ion to pass through, so that ion transmits between positive pole and negative pole.
Electrolyte 4, it is filled between described positive pole and negative pole, with positive pole and negative pole physical contact and electrical contact.Electrolyte
Being made up of solute, solvent and additive, solute is lithium hexafluoro phosphate (LiPF6), solvent is cyclic carbonate and chain carbonic acid
Ester two lipoid forms, and additive has into membrane stabilizer, low temperature and high-temperature stabilizer and high pressure overcharges protective agent etc..
Wherein, the left surface of described fixed layer and right surface are provided with multiple through hole 52 not of uniform size, so that lithium
Ion can pass through fixed layer.Lithium lamella 6 it is provided with, in the middle of described lithium lamella between described embedding lithium layer and described barrier film
Being provided with the second groove 61, described embedding lithium layer is placed in described second groove, and the periphery of described lithium lamella is provided with multiple solid
Determining foot 62, multiple fixing feet are fixed on the sidewall of described barrier film, so that embedding lithium layer is the most fixing with barrier film.When with necessarily
Electric current time lithium-ion capacitor is charged, negative pole has certain nuclear power state, and now the lithium in lithium lamella is converted into
In the embedding lithium layer of Lithium-ion embeding.Embedding lithium layer is wrapped in wherein by lithium lamella, it is possible to increase the specific energy of lithium-ion capacitor, and
Improve the cyclical stability of lithium-ion capacitor.Total loading of lithium lamella is set as can the negative electrode active material of anticathode
The amount of abundant doped lithium ion in mixture, such total loading can be by considering that the material of negative electrode active material, amount are carried out
Theoretical Calculation.
In described lithium-ion capacitor, doped with conductive material in described fixed layer, described second multicellular metal foil and embedding lithium
Conductive layer 7 it is provided with between Ceng.In fixed layer, the doping of conductive material significantly reduces the first multicellular metal foil and activated carbon layer
Between contact resistance；The setting of conductive layer significantly reduces the contact resistance between the second multicellular metal foil and embedding lithium layer.
In described lithium-ion capacitor, the length of described first multicellular metal foil and the second multicellular metal foil is consistent, described solid
The length of given layer, activated carbon layer, barrier film, lithium lamella and embedding lithium layer is respectively less than described first multicellular metal foil or the second porous gold
Belong to the length of paper tinsel, so that the first multicellular metal foil and the second multicellular metal foil are by fixed layer, activated carbon layer, barrier film, lithium sheet
Layer and embedding lithium layer are clamped in centre, fixing relatively reliable.
In described lithium-ion capacitor, described first multicellular metal foil, fixed layer, active carbon layer, barrier film, lithium lamella,
Embedding lithium layer and the second multicellular metal foil are placed in a housing 8, and described electrolyte is filled in the gap of described housing.Housing
Setting make the structure of whole lithium-ion capacitor compacter.
In described lithium-ion capacitor, described first multicellular metal foil is aluminium foil, and described second multicellular metal foil is Copper Foil.
In described lithium-ion capacitor, described barrier film is polyethene microporous membrane, microporous polypropylene membrane, composite membrane, inorganic pottery
Any one in porcelain film, paper barrier film, non-woven fabrics barrier film or cellulosic separator.
Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, and can
It is easily achieved other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, this practicality
Novel be not limited to specific details and shown here as with describe legend.
Claims (6)
1. a lithium-ion capacitor, it is characterised in that including:
Positive pole, it includes the first multicellular metal foil and is arranged at the activated carbon layer on described first multicellular metal foil surface, described the
Being provided with fixed layer between one multicellular metal foil and described activated carbon layer, described fixed layer is set to " work " font, described solid
The left surface of given layer and right surface are provided with the first groove, and described first multicellular metal foil and activated carbon layer are respectively placed in described
In the left surface of fixed layer and first groove on right surface；
Negative pole, it includes the second multicellular metal foil and is arranged at the embedding lithium layer on described second multicellular metal foil surface；
Barrier film, it is arranged between described positive pole and negative pole, and between described active carbon layer and embedding lithium layer；
Electrolyte, it is filled between described positive pole and negative pole；
Wherein, the left surface of described fixed layer and right surface be provided with multiple through hole not of uniform size, described embedding lithium layer and
Being provided with lithium lamella between described barrier film, be provided with the second groove in the middle of described lithium lamella, described embedding lithium layer is placed in described second
In groove, the periphery of described lithium lamella is provided with multiple fixing foot, and multiple fixing feet are fixed on the sidewall of described barrier film.
2. lithium-ion capacitor as claimed in claim 1, it is characterised in that doped with conductive material in described fixed layer,
It is provided with conductive layer between described second multicellular metal foil and embedding lithium layer.
3. lithium-ion capacitor as claimed in claim 2, it is characterised in that described first multicellular metal foil and more than second
The length of mesoporous metal paper tinsel is consistent, and the length of described fixed layer, activated carbon layer, barrier film, lithium lamella and embedding lithium layer is respectively less than described
First multicellular metal foil or the length of the second multicellular metal foil.
4. lithium-ion capacitor as claimed in claim 3, it is characterised in that described first multicellular metal foil, fixed layer,
Active carbon layer, barrier film, lithium lamella, embedding lithium layer and the second multicellular metal foil are placed in a housing, and described electrolyte is filled in
In the gap of described housing.
5. lithium-ion capacitor as claimed in claim 1, it is characterised in that described first multicellular metal foil is aluminium foil,
Described second multicellular metal foil is Copper Foil.
6. lithium-ion capacitor as claimed in claim 1, it is characterised in that described barrier film is polyethene microporous membrane, gathers
Any one in propylene microcellular film, composite membrane, inorganic ceramic film, paper barrier film, non-woven fabrics barrier film or cellulosic separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177141.5U CN205487766U (en) | 2016-03-07 | 2016-03-07 | Lithium ion capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177141.5U CN205487766U (en) | 2016-03-07 | 2016-03-07 | Lithium ion capacitor |
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| Publication Number | Publication Date |
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| CN205487766U true CN205487766U (en) | 2016-08-17 |
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| CN201620177141.5U Active CN205487766U (en) | 2016-03-07 | 2016-03-07 | Lithium ion capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735845A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with latticed transition layer and preparation method and application thereof |
| CN112735847A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with Cu transition layer and preparation method and application thereof |
| CN112735846A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Has Li4Ti5O12Lithium ion capacitor negative pole piece of transition layer and preparation method and application thereof |
| CN112768254A (en) * | 2020-12-23 | 2021-05-07 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with Ag transition layer and preparation method and application thereof |
-
2016
- 2016-03-07 CN CN201620177141.5U patent/CN205487766U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735845A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with latticed transition layer and preparation method and application thereof |
| CN112735847A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with Cu transition layer and preparation method and application thereof |
| CN112735846A (en) * | 2020-12-23 | 2021-04-30 | 广东风华高新科技股份有限公司 | Has Li4Ti5O12Lithium ion capacitor negative pole piece of transition layer and preparation method and application thereof |
| CN112768254A (en) * | 2020-12-23 | 2021-05-07 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with Ag transition layer and preparation method and application thereof |
| CN112735845B (en) * | 2020-12-23 | 2022-07-26 | 广东风华高新科技股份有限公司 | Lithium ion capacitor negative electrode plate with latticed transition layer and preparation method and application thereof |
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| GR01 | Patent grant |