CN110085450A - A kind of lithium-ion capacitor electrolyte - Google Patents

A kind of lithium-ion capacitor electrolyte Download PDF

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Publication number
CN110085450A
CN110085450A CN201910275820.4A CN201910275820A CN110085450A CN 110085450 A CN110085450 A CN 110085450A CN 201910275820 A CN201910275820 A CN 201910275820A CN 110085450 A CN110085450 A CN 110085450A
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lithium
ion capacitor
electrolyte
preparation
parts
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CN201910275820.4A
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CN110085450B (en
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阮殿波
乔志军
丁升
陈宽
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Ningbo CRRC New Energy Technology Co Ltd
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Ningbo CRRC New Energy Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/04—Hybrid capacitors
    • H01G11/06—Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/54—Electrolytes
    • H01G11/58—Liquid electrolytes
    • H01G11/60—Liquid electrolytes characterised by the solvent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/54—Electrolytes
    • H01G11/58—Liquid electrolytes
    • H01G11/62—Liquid electrolytes characterised by the solute, e.g. salts, anions or cations therein
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

The present invention relates to a kind of preparations of lithium-ion capacitor electrolyte, especially a kind of high specific energy, low internal resistance, the preparation of long life electrolysis liquid and its application in lithium-ion capacitor, electrolyte is using lithium salts and organic salt as solute, using ethylene carbonate, methyl ethyl carbonate, ethyl acetate, acetonitrile mixed solution as solvent, wherein the molar concentration of lithium salts and organic salt in the electrolytic solution is 1.6-2.0mol/L.The electrolyte middle and high concentration lithium salts is mainly used for shortening the diffusion length of lithium ion, alleviates the loss of cyclic process lithium salts；And organic salt is then mainly used for the energy stores of anode electrode, ultimately facilitates and realizes lithium-ion capacitor high capacity, low internal resistance, the use characteristic of long-life.

Description

A kind of lithium-ion capacitor electrolyte
Invention field
The present invention relates to a kind of preparation of lithium-ion capacitor electrolyte, especially a kind of high specific energy, low internal resistance, longevity The preparation and its application in lithium-ion capacitor for ordering electrolyte.
Background technique
Lithium-ion capacitor performance has obtained continuous raising, such as energy density, power density, cycle performance, big multiplying power Discharge performance etc., which all achieves, to be obviously improved.As lithium-ion capacitor field new material and the continuous of new technology are studied and are answered With the safety of lithium-ion capacitor is also greatly improved.The continuous promotion of lithium-ion capacitor performance, promotes lithium Ionistor is widely used in more and more fields.But getting over lithium-ion capacitor application range Carry out more extensive, poor to the adaptability of application environment problem to become increasingly conspicuous.At low ambient temperatures such as lithium-ion capacitor Charge-discharge performance it is poor, especially in cold district, winter temperature in the environment spent subzero 20 more, lithium-ion capacitor Almost can not normal use, cause it to be greatly affected in the use in the lower place of temperature, application range also receives The limitation of region.In order to solve the problems, such as that lithium-ion capacitor low temperature charge-discharge performance is poor, in practical application, the method used Have to lithium-ion capacitor heating, construction constant temperature subenvironment, cold tempera-tures outdoors avoided to use time etc..In these methods, to lithium from Sub-capacitor heating or construction isoperibol can all be such that the use cost of lithium-ion capacitor increases, and avoid low temperature using then It will affect the normal use of lithium-ion capacitor.
In order to improve the cryogenic property of lithium-ion capacitor, and avoids increasing cost and the use of lithium-ion capacitor is made At limitation, the lithium-ion capacitor material that research and development can be improved lithium-ion capacitor cryogenic property becomes ideal Solution.
Summary of the invention
The present invention in view of the above-mentioned problems existing in the prior art, proposes a kind of lithium-ion capacitor electrolyte, proposes A kind of low temperature performance good lithium-ion capacitor low-temperature electrolyte.
The purpose of the present invention is realized by following technical solution: a kind of lithium-ion capacitor electrolyte, the electrolysis Liquid using lithium salts and organic salt as solute, using ethylene carbonate, methyl ethyl carbonate, ethyl acetate, acetonitrile mixed solution as solvent, Wherein the molar concentration of lithium salts and organic salt in the electrolytic solution is 1.6-2.0mol/L.
Lithium-ion capacitor of the present invention is mainly used for shortening the diffusion length of lithium ion with electrolyte middle and high concentration lithium salts, is delayed Solve the loss of cyclic process lithium salts；And organic salt is then mainly used for the energy stores of anode electrode, ultimately facilitate realize lithium from Sub-capacitor high capacity, low internal resistance, the use characteristic of long-life.
In a kind of above-mentioned lithium-ion capacitor electrolyte, the ethylene carbonate, methyl ethyl carbonate, ethyl acetate, The mass fraction of acetonitrile in a solvent is respectively 35-45wt%, 35-45wt%, 10-15wt%, 10-15wt%.
In a kind of above-mentioned lithium-ion capacitor electrolyte, the lithium salts is LiPF6、LiBF4、LiClO4One of Or it is a variety of.
In a kind of above-mentioned lithium-ion capacitor electrolyte, the organic salt is SBPBF4、TEABF4、TEMABF4In It is one or more.
A kind of preparation method of lithium-ion capacitor electrolyte, the preparation method include the following steps: to add lithium salts Enter into solvent, is stirring evenly and then adding into organic salt, obtains electrolyte after mixing.
In a kind of above-mentioned preparation method of lithium-ion capacitor electrolyte, the rate of the stirring is 50-200rmp, The temperature of mixing control is 40-60 DEG C, mixing time 4-8h.
In a kind of above-mentioned preparation method of lithium-ion capacitor electrolyte, the mixing temperature is 40-60 DEG C, mixing When rate be 50-200rmp, incorporation time 2-6h.
In a kind of above-mentioned preparation method of lithium-ion capacitor electrolyte, preparation process is lower than in moisture content 1ppm, oxygen content are carried out under the glove box environment lower than 0.1ppm.
A kind of preparation method of lithium-ion capacitor, the preparation method include the following steps: cathode pole piece, cellulose Diaphragm, anode pole piece, cellulosic separator are pre-assembled according to " Z-type " lamination process, outside the diaphragm for closing on outermost layer cathode pole piece Survey is folded into metal lithium sheet, and battery core is assembled into；Battery core is placed in aluminum plastic membrane shell, and injects the electrolyte, vacuum-pumping density Seal to obtain lithium-ion capacitor.
In a kind of above-mentioned preparation method of lithium-ion capacitor, cathode includes following parts by weight in the cathode pole piece Component: 80-92 parts of carbon cathode materials, 2-10 parts of conductive blacks, 3-5 parts of butadiene-styrene rubber, 3-5 parts of sodium cellulose glycolates.
Preferably, the carbon cathode material be one of materials such as artificial graphite, natural graphite, soft charcoal, hard charcoal or It is a variety of.
Preferably, the preparation method of the cathode pole piece includes the following steps: carbon cathode material, conductive black, fourth Benzene rubber and sodium cellulose glycolate are stirred to obtain slurry under vacuum conditions, and slurry is coated uniformly on corrosive aluminum foil, Through drying, roll, cut, be punched after cathode pole piece can be obtained.
Preferably, the slurry solid content is 20-30wt%.
Preferably, the size of the cathode pole piece is (50-60) mm* (70-80) mm.
In a kind of above-mentioned preparation method of lithium-ion capacitor, anode includes following parts by weight in the anode pole piece Component: 80-92 parts of absorbent charcoal materials, 4-10 parts of conductive blacks, 2-5 parts of sodium cellulose glycolate dispersing agents, 3-5 parts bonding Agent.
Preferably, the binder is one of SBR, JSR, LA132.
Preferably, the preparation method of the anode pole piece includes the following steps: absorbent charcoal material, conductive black, hydroxyl Sodium carboxymethylcellulose pyce dispersing agent and binder obtain the anode sizing agent that viscosity is 900-1500cps under the conditions of being stirred under vacuum, will Anode sizing agent be coated in corrosive aluminum foil on formed electrode after through drying, roll, be punched after obtain anode pole piece.
Preferably, the size of the anode pole piece is (50-60) mm* (70-80) mm.
Compared with prior art, the present invention has the advantage that
1), production cost is low, operating process is simple, and is easily achieved mass production.Selected original in the composite electrolyte Material is industrial scale product, preparation process only need the moisture content of control operating environment, oxygen content, mixing temperature, Incorporation time and mixing revolving speed.
2), gained lithium-ion capacitor capacity is higher, internal resistance is lower, cycle life is longer.It is highly concentrated in the composite electrolyte Degree lithium salts is mainly used for shortening the diffusion length of lithium ion, alleviates the loss of cyclic process lithium salts；And organic salt is then mainly used for The energy stores of anode electrode.It ultimately facilitates and realizes lithium-ion capacitor high capacity, low internal resistance, the use characteristic of long-life.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously It is not limited to these embodiments.
Embodiment 1
Lithium salts is added in solvent, organic salt is stirring evenly and then adding into, obtains electrolyte after mixing, wherein institute The rate for stating stirring is 50rmp, and the temperature of mixing control is 40 DEG C, mixing time 4h；The mixing temperature is 40 DEG C, mixing When rate be 50rmp, incorporation time 2h, gloves of the preparation process in moisture content 0.09ppm, oxygen content 0.09ppm It is carried out under case environment, for the electrolyte using lithium salts and organic salt as solute, the ingredient in solvent is ethylene carbonate 35wt%, carbon Sour methyl ethyl ester 35wt%, ethyl acetate 15wt%, acetonitrile 15wt%, the wherein molar concentration of lithium salts and organic salt in the electrolytic solution It is 1.6mol/L, the lithium salts is LiPF6, the organic salt is SBPBF4。
Embodiment 2
Lithium salts is added in solvent, organic salt is stirring evenly and then adding into, obtains electrolyte after mixing, wherein institute The rate for stating stirring is 70rmp, and the temperature of mixing control is 45 DEG C, mixing time 5h；The mixing temperature is 45 DEG C, mixing When rate be 70rmp, incorporation time 3h, gloves of the preparation process in moisture content 0.08ppm, oxygen content 0.08ppm It is carried out under case environment, for the electrolyte using lithium salts and organic salt as solute, the ingredient in solvent is ethylene carbonate 37wt%, carbon Sour methyl ethyl ester 37wt%, ethyl acetate 11wt%, acetonitrile 11wt%, the wherein molar concentration of lithium salts and organic salt in the electrolytic solution It is 1.7mol/L, the lithium salts is LiPF6、LiBF4, the organic salt is SBPBF4、TEABF4。
Embodiment 3
Lithium salts is added in solvent, organic salt is stirring evenly and then adding into, obtains electrolyte after mixing, wherein institute The rate for stating stirring is 125rmp, and the temperature of mixing control is 50 DEG C, mixing time 6h；The mixing temperature is 50 DEG C, is mixed Rate when conjunction is 125rmp, and incorporation time 4h, preparation process is in moisture content 0.05ppm, oxygen content lower than 0.05ppm Glove box environment under carry out, for the electrolyte using lithium salts and organic salt as solute, ingredient in solvent is ethylene carbonate 40wt%, methyl ethyl carbonate 40wt%, ethyl acetate 10wt%, acetonitrile 10wt%, wherein lithium salts and organic salt is in the electrolytic solution Molar concentration be 1.8mol/L, the lithium salts be LiPF6、LiBF4、LiClO4, the organic salt is SBPBF4、TEABF4、 TEMABF4。
Embodiment 4
Lithium salts is added in solvent, organic salt is stirring evenly and then adding into, obtains electrolyte after mixing, wherein institute The rate for stating stirring is 150rmp, and the temperature of mixing control is 55 DEG C, mixing time 7h；The mixing temperature is 55 DEG C, is mixed Rate when conjunction is 180rmp, incorporation time 5h, hand of the preparation process in moisture content 0.08ppm, oxygen content 0.08ppm Carried out under casing environment, the electrolyte using lithium salts and organic salt as solute, ingredient in solvent be ethylene carbonate 42wt%, Methyl ethyl carbonate 42wt%, ethyl acetate 13wt%, acetonitrile 13wt%, wherein lithium salts and organic salt in the electrolytic solution mole dense Degree is 1.9mol/L, and the lithium salts is LiClO4, the organic salt is TEMABF4。
Embodiment 5
Lithium salts is added in solvent, organic salt is stirring evenly and then adding into, obtains electrolyte after mixing, wherein institute The rate for stating stirring is 200rmp, and the temperature of mixing control is 60 DEG C, mixing time 8h；The mixing temperature is 60 DEG C, is mixed Rate when conjunction is 200rmp, incorporation time 6h, hand of the preparation process in moisture content 0.06ppm, oxygen content 0.06ppm Carried out under casing environment, the electrolyte using lithium salts and organic salt as solute, ingredient in solvent be ethylene carbonate 40wt%, Methyl ethyl carbonate 40wt%, ethyl acetate 10wt%, acetonitrile 10wt%, wherein lithium salts and organic salt in the electrolytic solution mole dense Degree is 2.0mol/L, and the lithium salts is LiBF4、LiClO4, the organic salt is TEABF4、TEMABF4。
Embodiment 6
Difference with embodiment 3 is only that the preparation process of the embodiment is in moisture content 0.11ppm, oxygen content It is carried out under the glove box environment of 0.11ppm.
Comparative example 1
Difference with embodiment 3 is only that, the embodiment using common commercially available lithium-ion capacitor electrolyte, other with Embodiment 3 is identical, and details are not described herein again.
Comparative example 2
Difference with embodiment 3 is only that, ethylene carbonate is not contained in the embodiment solvent, other and 3 phase of embodiment Together, details are not described herein again.
Comparative example 3
Difference with embodiment 3 is only that, methyl ethyl carbonate is not contained in the embodiment solvent, other and 3 phase of embodiment Together, details are not described herein again.
Comparative example 4
Difference with embodiment 3 is only that, ethyl acetate is not contained in the embodiment solvent, other are same as Example 3, Details are not described herein again.
Comparative example 5
Difference with embodiment 3 is only that, acetonitrile is not contained in the embodiment solvent, other are same as Example 3, herein It repeats no more.
Application Example 1
Cathode pole piece, cellulosic separator, anode pole piece, cellulosic separator is pre-assembled according to " Z-type " lamination process, facing The diaphragm exterior measuring of nearly outermost layer cathode pole piece is folded into metal lithium sheet, and battery core is assembled into；Battery core is placed in aluminum plastic membrane shell, and is infused Enter electrolyte obtained in embodiment 1, vacuumize and seal to obtain lithium-ion capacitor, wherein cathode includes in the cathode pole piece The component of following parts by weight: 86 parts of carbon cathode materials, 6 parts of conductive blacks, 4 parts of butadiene-styrene rubber, 4 parts of sodium cellulose glycolates, The carbon cathode material is one of materials such as artificial graphite, natural graphite, soft charcoal, hard charcoal or a variety of, the cathode pole piece Preparation method include the following steps: carbon cathode material, conductive black, butadiene-styrene rubber and sodium cellulose glycolate in vacuum item Be stirred to obtain slurry under part, slurry be coated uniformly on corrosive aluminum foil, through drying, roll, cut, be punched after can be obtained Cathode pole piece, the slurry solid content are 25wt%, and the size of the cathode pole piece is 55mm*75mm；In the anode pole piece Anode includes the component of following parts by weight: 86 parts of absorbent charcoal materials, 7 parts of conductive blacks, 3 parts of sodium cellulose glycolate dispersions Agent, 4 parts of binders, the binder are SBR.The preparation method of the anode pole piece include the following steps: by absorbent charcoal material, Conductive black, sodium cellulose glycolate dispersing agent and binder obtain the anode that viscosity is 1200cps under the conditions of being stirred under vacuum Slurry, by anode sizing agent be coated in corrosive aluminum foil on formed electrode after through drying, roll, be punched after obtain anode pole piece, it is described just The size of pole pole piece is 55mm*75mm.
Application Example 2
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in embodiment 2 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 3
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in embodiment 3 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 4
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in embodiment 4 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 5
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in embodiment 5 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 6
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in embodiment 6 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 7
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in comparative example 1 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 8
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in comparative example 2 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 9
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in comparative example 3 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 10
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in comparative example 4 Liquid, other are identical as Application Example 1, and details are not described herein again.
Application Example 11
Difference with Application Example 1 is only that the electrolyte in the Application Example is electrolysis obtained in comparative example 5 Liquid, other are identical as Application Example 1, and details are not described herein again.
By cathode in lithium-ion capacitor made from Application Example 1-11 and metal lithium electrode 0.01C, 0-2.2V it Between carry out 3 constant current charge-discharges pre-embedding lithium processes, then it is carried out capacity, internal resistance and cycle life test, test knot Fruit is as shown in table 1:
Table 1: lithium-ion capacitor performance test results made from Application Example 1-11
It can be seen from the results above that lithium-ion capacitor capacity of the present invention is higher, internal resistance is lower, cycle life is longer. The composite electrolyte middle and high concentration lithium salts is mainly used for shortening the diffusion length of lithium ion, alleviates the loss of cyclic process lithium salts； And organic salt is then mainly used for the energy stores of anode electrode.Ultimately facilitate realize lithium-ion capacitor high capacity, low internal resistance, The use characteristic of long-life.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, but simultaneously Spirit or beyond the scope defined by the appended claims of the invention is not deviated by.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.

Claims (9)

1. a kind of lithium-ion capacitor electrolyte, which is characterized in that the electrolyte is using lithium salts and organic salt as solute, with carbon Vinyl acetate, methyl ethyl carbonate, ethyl acetate, acetonitrile mixed solution be solvent, wherein lithium salts and organic salt is in the electrolytic solution Molar concentration be 1.6-2.0mol/L.
2. a kind of lithium-ion capacitor electrolyte according to claim 1, which is characterized in that the ethylene carbonate, The mass fraction of methyl ethyl carbonate, ethyl acetate, acetonitrile in a solvent is respectively 35-45wt%, 35-45wt%, 10- 15wt%, 10-15wt%.
3. a kind of preparation method of lithium-ion capacitor electrolyte as described in claim 1, which is characterized in that the preparation Method includes the following steps: for lithium salts to be added in solvent, is stirring evenly and then adding into organic salt, is electrolysed after mixing Liquid, wherein the rate of the stirring is 50-200rmp, and the temperature of mixing control is 40-60 DEG C, mixing time 4-8h；It is described Mixing temperature is 40-60 DEG C, and rate when mixing is 50-200rmp, incorporation time 2-6h.
4. the preparation method of lithium-ion capacitor electrolyte according to claim 3, which is characterized in that preparation process exists Moisture content is lower than under the glove box environment of 0.1ppm lower than 1ppm, oxygen content to be carried out.
5. a kind of preparation method of lithium-ion capacitor, which is characterized in that by cathode pole piece, cellulosic separator, anode pole piece, fibre It is pre-assembled according to " Z-type " lamination process to tie up plain diaphragm, folds in the diaphragm exterior measuring for closing on outermost layer cathode pole piece into metal lithium sheet, group Dress up battery core；Battery core is placed in aluminum plastic membrane shell, and injects electrolyte as described in claim 1, vacuumizes and seals to obtain lithium Ionistor.
6. a kind of preparation method of lithium-ion capacitor according to claim 5, which is characterized in that in the cathode pole piece Cathode includes the component of following parts by weight: 80-92 parts of carbon cathode materials, 2-10 parts of conductive blacks, 3-5 parts of butadiene-styrene rubber, 3-5 Part sodium cellulose glycolate.
7. a kind of preparation method of lithium-ion capacitor according to claim 6, which is characterized in that the carbon cathode material For one of materials such as artificial graphite, natural graphite, soft charcoal, hard charcoal or a variety of.
8. a kind of preparation method of lithium-ion capacitor according to claim 5, which is characterized in that in the anode pole piece Anode includes the component of following parts by weight: 80-92 parts of absorbent charcoal materials, 4-10 parts of conductive blacks, 2-5 parts of hydroxymethyl celluloses Sodium dispersing agent, 3-5 parts of binders.
9. a kind of preparation method of lithium-ion capacitor according to claim 8, which is characterized in that the anode pole piece Preparation method includes the following steps: absorbent charcoal material, conductive black, sodium cellulose glycolate dispersing agent and binder through vacuum The anode sizing agent that viscosity is 900-1500cps is obtained under stirring condition, and anode sizing agent is coated on corrosive aluminum foil and forms electrode By drying, roll, be punched after anode pole piece.
CN201910275820.4A 2019-04-08 2019-04-08 Electrolyte for lithium ion capacitor Active CN110085450B (en)

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WO2023117488A1 (en) * 2021-12-23 2023-06-29 Skeleton Technologies GmbH Electrolyte compositions for energy storage cells with fast charge and discharge capabilites

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101079510A (en) * 2007-06-25 2007-11-28 中南大学 A super capacitance cell
CN104364937A (en) * 2012-05-28 2015-02-18 可乐丽股份有限公司 Separator for non-aqueous cell and non-aqueous cell
CN106848397A (en) * 2016-12-22 2017-06-13 宁波中车新能源科技有限公司 A kind of lithium-ion capacitor electrolyte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101079510A (en) * 2007-06-25 2007-11-28 中南大学 A super capacitance cell
CN104364937A (en) * 2012-05-28 2015-02-18 可乐丽股份有限公司 Separator for non-aqueous cell and non-aqueous cell
CN106848397A (en) * 2016-12-22 2017-06-13 宁波中车新能源科技有限公司 A kind of lithium-ion capacitor electrolyte

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Inventor after: Qiao Zhijun

Inventor after: Ruan Dianbo

Inventor after: Ding Sheng

Inventor after: Chen Kuan

Inventor before: Ruan Dianbo

Inventor before: Qiao Zhijun

Inventor before: Ding Sheng

Inventor before: Chen Kuan