CN106847520A - A kind of lithium-ion capacitor positive pole and its application - Google Patents
A kind of lithium-ion capacitor positive pole and its application Download PDFInfo
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- CN106847520A CN106847520A CN201611198215.4A CN201611198215A CN106847520A CN 106847520 A CN106847520 A CN 106847520A CN 201611198215 A CN201611198215 A CN 201611198215A CN 106847520 A CN106847520 A CN 106847520A
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- lithium
- ion capacitor
- positive pole
- active material
- binding agent
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- 239000003990 capacitor Substances 0.000 title claims abstract description 68
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 66
- 239000011230 binding agent Substances 0.000 claims abstract description 25
- 229910021450 lithium metal oxide Inorganic materials 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 238000004513 sizing Methods 0.000 claims abstract description 22
- 239000007774 positive electrode material Substances 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 23
- 239000003610 charcoal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000007773 negative electrode material Substances 0.000 claims description 9
- -1 conductive black Substances 0.000 claims description 7
- 125000000524 functional group Chemical group 0.000 claims description 7
- 230000002687 intercalation Effects 0.000 claims description 7
- 238000009830 intercalation Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 229910010736 Li5ReO6 Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910010177 Li2MoO3 Inorganic materials 0.000 claims description 3
- 229910008714 Li2NiO3 Inorganic materials 0.000 claims description 3
- 229910010648 Li6CoO4 Inorganic materials 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 239000002956 ash Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229920000131 polyvinylidene Polymers 0.000 description 3
- 229910001290 LiPF6 Inorganic materials 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000011331 needle coke Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/50—Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The present invention relates to a kind of lithium-ion capacitor positive pole and its application.Positive pole includes collector and is formed at the positive electrode of collection liquid surface, and positive electrode is remaining material after anode sizing agent is dried；Anode sizing agent is that positive active material, lithium metal oxide, conductive black and binding agent are dissolved in the solution formed in decentralized medium；The mass ratio of positive active material, lithium metal oxide, conductive black and binding agent is (70 85):(5‑10):(3‑10):(3‑10)；The gross mass of positive active material, lithium metal oxide, conductive black and binding agent and the mass ratio of decentralized medium are 1：(5‑7).The preparation of lithium-ion capacitor positive pole is realized by lithium metal oxide, when being applied in lithium-ion capacitor, between only need to charging to 4.2~5.0V under the conditions of 0.02~0.1C and voltage stabilizing once, simplify chemical synthesis technology step that is time-consuming, consuming energy.
Description
Technical field
The present invention relates to a kind of capacitor anode, more particularly to a kind of lithium-ion capacitor positive pole and its application, belong to storage
Can device arts.
Background technology
With " greenization ", the quickening of " intellectuality " new urbanization process, novel green, the development of high-efficiency energy-storage device
Become research emphasis.In numerous new type of energy storage device, lithium-ion capacitor has double layer capacitor power concurrently as one kind
The new hybrid capacitors of characteristic and lithium ion battery energy feature, become lifting, the lithium of super capacitor energy density
The new breach that ion battery systems power density is improved.
Generally, lithium-ion capacitor is to make positive pole, reversible redox carbon material (such as by adsorption desorption energy storage activated carbon
Graphite, hard charcoal, soft charcoal etc.) make negative pole and organic system electrolyte composition.By " series connection " process between internal positive and negative electrode,
Realize the 3 times of liftings of energy above density of traditional double layer capacitor, the power density of more than 2 times of lithium ion battery increases,
Become the high-efficiency energy-storage power supply of the application fields such as urban public transport, wind-power electricity generation, heavy-duty machinery urgent need.
But, in the practical work process of lithium-ion capacitor, because negative pole need to complete surface solid electrolyte interface
The forming process of film, so that the pre- process of intercalation of negative pole becomes one essential processing step.Chinese invention patent
(publication number：CN102969162A a kind of lithium ion capacitor anode plate and preparation method thereof) is disclosed, the capacitor anode one
As do not make specially treated, i.e., using activated carbon as unique ergastic substances.And for example Chinese invention patent (publication number：
CN101138058A a kind of lithium-ion capacitor) is disclosed, the lithium-ion capacitor is mainly by negative pole and metal lithium source structure
Building the mode of " electrical potential difference " carries out " pre- embedding lithium " process.Although both approaches can prepare high specific energy lithium-ion capacitor,
This ripple metal living high of lithium metal need to be used in product preparation process, so that production process is to working environment, safety etc.
Level is set and mass production cost has strict limitation requirement, ultimately limit the scale application of the series of products.
The content of the invention
The purpose of the present invention is directed to the above-mentioned problems in the prior art, it is proposed that a kind of lithium-ion capacitor is just
Pole, can avoid that lithium-ion capacitor safety coefficient is low, production cost is high by the use of lithium-ion capacitor positive pole of the present invention,
The problem of the aspect such as operating process is long, realizes process simplification, the process of batch production amplificationization.
The purpose of the present invention can be realized by following technical proposal：A kind of lithium-ion capacitor positive pole, the positive pole bag
Include collector and be formed at the positive electrode of collection liquid surface, the positive electrode is remaining thing after anode sizing agent is dried
Matter；
The anode sizing agent is dissolved in decentralized medium for positive active material, lithium metal oxide, conductive black and binding agent
The solution of middle formation；
The mass ratio of the positive active material, lithium metal oxide, conductive black and binding agent is (70-85):(5-
10):(3-10):(3-10)；
The gross mass of the positive active material, lithium metal oxide, conductive black and binding agent and the matter of decentralized medium
Amount is than being 1：(5-7).
In a kind of above-mentioned lithium-ion capacitor positive pole, the anode sizing agent is in 22-28 DEG C of temperature, humidity 20-40%
Under the conditions of be obtained.
In a kind of above-mentioned lithium-ion capacitor positive pole, the solid content of the anode sizing agent is 40-55%.
In a kind of above-mentioned lithium-ion capacitor positive pole, the positive active material is activated carbon, the activated carbon
Specific surface area is 1550~2100m2/ g, surface acidity functional group content are less than 0.5meq/g, content of ashes less than 1%, metal
Impurity content is less than 100ppm.Activated carbon raw materials presoma is petroleum coke, needle coke, coconut husk etc..
In a kind of above-mentioned lithium-ion capacitor positive pole, the lithium metal oxide is Li6CoO4、Li6MnO4、
Li5ReO6、Li2NiO3、Li2MoO3In one or more, the purity of the lithium metal oxide is more than 99.5%.
In a kind of above-mentioned lithium-ion capacitor positive pole, the binding agent be Kynoar, the binding agent it is pure
Degree is more than 99.5%.
Preferably, the collector is corrosive aluminum foil, stainless steel foil or Web materials, the corrosive aluminum foil for non-porous or
There is hole.
Another object of the present invention is to provide a kind of lithium-ion capacitor of the above-mentioned lithium-ion capacitor positive pole of application,
The negative pole of the lithium-ion capacitor includes collector and is formed at the negative material of collection liquid surface, the negative pole
Material is remaining material after cathode size is dried；
The cathode size is formed for negative electrode active material, conductive black, binding agent and dispersant are dissolved in decentralized medium
Solution, the mass ratio of the negative electrode active material, conductive black, binding agent and dispersant is (88-92):(3-7):(1-3):
(1-3)。
In a kind of above-mentioned lithium-ion capacitor, the negative electrode active material is graphite carbon material, including soft charcoal, day
One or more in right graphite, Delanium, hard charcoal, purity is more than 99.5%.
Preferably, the collector is corrosion Copper Foil, stainless steel foil or Web materials, the corrosion Copper Foil for non-porous or
There is hole.
In a kind of above-mentioned lithium-ion capacitor, the preparation method of the lithium-ion capacitor includes：Positive and negative electrode pole piece
Preparation, lithium-ion capacitor assembling and pre- process of intercalation；
The pre- process of intercalation is：Lithium-ion capacitor after assembling is charged to 4.3 under the conditions of 0.02~0.1C~
5.0V, the constant pressure 6-10h under the voltage conditions.
Preferably, lithium-ion capacitor assembling includes constituting electricity after positive pole, barrier film, negative pole, barrier film are pressed into Z-type lamination
Core, injection electrolyte, new type lithium ion is can obtain after vacuum sealing after battery core is placed in certain shell sizes plastic-aluminum putamina
Capacitor.
Preferably, electrolyte salt is the lithium salts for dissolving in organic solvent in the electrolyte, including LiPF6、LiBF4、
LiClO4In one or more, the organic solvent is at least one of PC, EC, DEC, DMC, EMC.
Compared with prior art, the present invention has following advantage：
1. the present invention by the way that capacity is high, the lithium metal oxide of the irreversible de- lithium process that is susceptible to lithium ion, realize
The preparation of lithium-ion capacitor positive pole, has been finally completed the successful insertion of lithium ion, and process of intercalation need not introduce active metal
Lithium, so as to avoid the potential safety hazard that lithium metal exposure is caused, technical process is safe and reliable.
2. in the preparation process of lithium-ion capacitor positive pole of the present invention only need to by lithium metal oxide mix slurry process according to
Ratio is added in anode sizing agent, low production cost, simple to operate without additional process condition and operating environment requirements.
3. the present invention without conventional lithium ion capacitor preparation process slow pre- embedding lithium technical process, only need to 0.02~
Charged under the conditions of 0.1C between 4.2~5.0V and voltage stabilizing once, simplify chemical synthesis technology step that is time-consuming, consuming energy.
Brief description of the drawings
Fig. 1 is the lithium-ion capacitor of the present invention capability retention that long-term cycle charge discharge electric process is measured under the conditions of 1C.
Specific embodiment
The following is specific embodiment of the invention, and be described with reference to the drawings to technical scheme make further retouch
State, but the present invention is not limited to these embodiments.
Embodiment 1：
It is 1550m by specific surface area2/ g, surface acidity functional group content 0.45meq/g, content of ashes 0.8%, metal are miscellaneous
The Li of activated carbon, purity more than 99.5% of matter content 85ppm6CoO4, 10% of conductive black, purity more than 99.5% it is poly-
Vinylidene is 80 according to mass ratio:10:5:5 are weighed, and are added dropwise and positive active material, lithium metal oxide, conductive charcoal
The mass ratio of the gross mass of black and binding agent is 1:5 NMP, prepared solid content is under the conditions of 25 DEG C of constant temperature, constant humidity 30%
50% anode sizing agent.Anode sizing agent is uniformly coated on the tow sides of non-porous corrosive aluminum foil, through drying, is rolled, be punched
The lithium-ion capacitor positive pole of 55mm*75mm is obtained afterwards.
Embodiment 2：
It is 1700m by specific surface area2/ g, surface acidity functional group content 0.4meq/g, content of ashes 0.9%, metal are miscellaneous
The Li of activated carbon, purity more than 99.5% of matter content 95ppm6MnO4, 10% of conductive black, purity more than 99.5% it is poly-
Vinylidene is 85 according to mass ratio:6:5:4 are weighed, and are added dropwise and positive active material, lithium metal oxide, conductive black
It is 1 with the mass ratio of the gross mass of binding agent:5 NMP, it is 50% that solid content is obtained under the conditions of 25 DEG C of constant temperature, constant humidity 30%
Anode sizing agent.Then anode sizing agent is uniformly coated on the tow sides of pitting corrosion aluminium foil, through drying, rolls, is punched
The lithium-ion capacitor positive pole of 55mm*75mm is obtained afterwards.
Embodiment 3：
It is 1850m by specific surface area2/ g, surface acidity functional group content 0.35meq/g, content of ashes 0.75%, metal
The Li of activated carbon, purity more than 99.5% of impurity content 90ppm2NiO3, 10% of conductive black, purity more than 99.5%
Kynoar is 80 according to mass ratio:10:5:5 are weighed, and are added dropwise and positive active material, lithium metal oxide, conduction
The mass ratio of the gross mass of carbon black and binding agent is 1:5 NMP, prepared solid content is under the conditions of 25 DEG C of constant temperature, constant humidity 30%
50% anode sizing agent.Then anode sizing agent is uniformly coated on the tow sides of non-porous corrosive aluminum foil, through drying, roll,
The lithium-ion capacitor positive pole of 55mm*75mm is obtained after punching.
Embodiment 4：
It is 2100m by specific surface area2/ g, surface acidity functional group content 0.48meq/g, content of ashes 0.7%, metal are miscellaneous
The Li of activated carbon, purity more than 99.5% of matter content 60ppm2MoO3, 10% of conductive black, purity more than 99.5% it is poly-
Vinylidene is 84 according to mass ratio:5:5:6 are weighed, and are added dropwise and positive active material, lithium metal oxide, conductive black
It is 1 with the mass ratio of the gross mass of binding agent:5 NMP, it is 50% that solid content is obtained under the conditions of 25 DEG C of constant temperature, constant humidity 30%
Anode sizing agent.Then anode sizing agent is uniformly coated on the tow sides of non-porous corrosive aluminum foil, through drying, rolls, is punched
The lithium-ion capacitor positive pole of 55mm*75mm is obtained afterwards.
Application Example 1-4：
Lithium-ion capacitor positive pole obtained in above-described embodiment 1-4 is applied in lithium-ion capacitor.
The negative pole of lithium-ion capacitor is：By purity more than 99.5% soft charcoal, conductive black, 40% butadiene-styrene rubber,
1.5% sodium cellulose glycolate is 91 according to mass ratio:5:2:2 are weighed, and it is 1 to be added dropwise with active material mass ratio:4.2
Deionized water stir under vacuum 2h preparation cathode size.Then cathode size is uniformly coated on without pitting corrosion copper
On the tow sides of paper tinsel, through drying, roll, be punched after obtain 55mm*75mm negative pole.
By positive pole, barrier film, negative pole, barrier film by being placed in shell plastic-aluminum putamina after Z-type mode lamination, and inject 1M LiPF6
(solvent is that volume ratio is 1:1 EC, DMC) electrolyte, vacuum-pumping density is honored as a queen and can obtain lithium-ion capacitor.
Monomer is charged into 4.5V by lithium-ion capacitor with 0.06C electric currents again, and voltage stabilizing 10h can be obtained and be completed pre- embedding
The lithium-ion capacitor of lithium process.
Lithium-ion capacitor obtained in Application Example 1-4 is carried out into long-term cycle charge-discharge procedural test under the conditions of 1C
Capability retention, test result is as shown in Figure 1.As can be seen from Figure 1：After 1000 times circulate, capability retention is also 92%
More than.
In above-described embodiment and its alternative, positive active material, lithium metal oxide, conductive black and binding agent
Mass ratio can also be 70:10:10:10、72:9:9:10、72:10:9:9、75:10:7:8、75:8:7:10、78:8:7:7、
80:8:3:9、80:9:4:7、81:9:7:3、82:8:5:5、82:6:6:6、83:7:5:5、83:5:8:4。
In above-described embodiment and its alternative, positive active material, lithium metal oxide, conductive black and binding agent
The mass ratio of gross mass and decentralized medium NMP can also be 1：5.1、1：5.2、1：5.3、1：5.4、1：5.5、1：5.6、1：
5.7、1：5.8、1：5.9、1：6.0、1：6.1、1：6.2、1：6.3、1：6.4、1：6.5、1：6.6、1：6.7、1：6.8、1：6.9、
1：7.0.
In above-described embodiment and its alternative, the specific surface area of activated carbon can also be 1550~2100m2Between/g
Such as 1580m2/g、1600m2/g、1650m2/g、1750m2/g、1900m2/g、1950m2/g、1980m2/g、2000m2/g、
2050m2The arbitrary values such as/g, surface acidity functional group content are less than 0.5meq/g such as 0.1meq/g, 0.15meq/g, 0.2meq/
The arbitrary values such as g, 0.25meq/g, 0.3meq/g, content of ashes less than 1% such as 0.3%, 0.4%, 0.5%, 0.6%,
0.85%th, the arbitrary value such as 0.95%, metals content impurity less than 100ppm as 10ppm, 20ppm, 30ppm, 40ppm,
The arbitrary values such as 50ppm, 70ppm.
In above-described embodiment and its alternative, in the preparation process of anode sizing agent temperature can also for 22 DEG C, 23 DEG C,
24℃、26℃、27℃、28℃。
In above-described embodiment and its alternative, in the preparation process of anode sizing agent humidity can also for 20%, 21%,
22%th, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 31%, 32%, 33%, 34%, 35%, 36%, 37%,
38%th, 39%, 40%.
In above-described embodiment and its alternative, the solid content of anode sizing agent can also for 40%, 41%, 42%,
43%th, 44%, 45%, 46%, 47%, 48%, 49%, 51%, 52%, 53%, 54%, 55%.
In above-described embodiment and its alternative, lithium metal oxide can also be Li5ReO6, or Li6CoO4、
Li6MnO4、Li2NiO3、Li5ReO6、Li2MoO3In any two kinds, three kinds, four kinds and five kinds of mixing.
In above-mentioned Application Example and its alternative, negative electrode active material, conductive black, binding agent and dispersant
Mass ratio can also be 90:5:3:2、92:4:2:2、89:7:3:1、88:7:2:3、92:3:3:2、91:4:3:2、90:6:2:2、
90:4:3:3、91:6:1:2。
In above-mentioned Application Example and its alternative, negative electrode active material can also for native graphite, Delanium,
Any two kinds, three kinds and four kinds in hard charcoal, or soft charcoal, native graphite, Delanium, hard charcoal of mixing.
In above-mentioned Application Example and its alternative, negative electrode active material, conductive black, binding agent and dispersant
Gross mass can also be 1 with the mass ratio of decentralized medium deionized water:4、1：4.1、1：4.3、1：4.4、1：4.5、1：4.6、1：
4.7、1：4.8、1：4.9、1：5.0.
In above-mentioned Application Example and its alternative, the charge condition of lithium-ion capacitor may be used also in pre- process of intercalation
Think 0.02C, 0.03C, 0.04C, 0.05C, 0.07C, 0.08C, 0.09C, 0.1C, charge to 4.3V, 4.4V, 4.6V, 4.7V,
4.8V, 4.9V, 5.0V, constant pressure 6h, 6.5h, 7h, 7.5h, 8h, 8.5h, 9h, 9.5h.
In view of the present invention program embodiment is numerous, each embodiment experimental data is huge numerous, is not suitable for arranging one by one herein
Explanation is lifted, but the content of checking required for each embodiment and the final conclusion for obtaining are approached.So herein not to each reality
The checking content for applying example illustrated one by one, only using embodiment 1-4 and Application Example 1-4 as representing explanation the present patent application
Excellent part.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously
Do not deviate by spirit of the invention or surmount scope defined in appended claims.
It is skilled to this area although having made a detailed description and being cited some specific embodiments to the present invention
For technical staff, as long as it is obvious that can be made various changes without departing from the spirit and scope of the present invention or corrected.
Claims (9)
1. a kind of lithium-ion capacitor positive pole, it is characterised in that the positive pole includes collector and is formed at collection liquid surface
Positive electrode, the positive electrode is remaining material after anode sizing agent is dried；
The anode sizing agent is dissolved in shape in decentralized medium for positive active material, lithium metal oxide, conductive black and binding agent
Into solution；
The mass ratio of the positive active material, lithium metal oxide, conductive black and binding agent is (70-85):(5-10):
(3-10):(3-10)；
The gross mass of the positive active material, lithium metal oxide, conductive black and binding agent and the mass ratio of decentralized medium
It is 1：(5-7).
2. a kind of lithium-ion capacitor positive pole according to claim 1, it is characterised in that the anode sizing agent is in temperature
22-28 DEG C, be obtained under the conditions of humidity 20-40%.
3. a kind of lithium-ion capacitor positive pole according to claim 1, it is characterised in that the solid content of the anode sizing agent
It is 40-55%.
4. a kind of lithium-ion capacitor positive pole according to claim 1, it is characterised in that the positive active material is to live
Property charcoal, the specific surface area of the activated carbon is 1550~2100m2/ g, surface acidity functional group content are less than 0.5meq/g, ash content
Content is less than 100ppm less than 1%, metals content impurity.
5. a kind of lithium-ion capacitor positive pole according to claim 1, it is characterised in that the lithium metal oxide is
Li6CoO4、Li6MnO4、Li2NiO3、Li5ReO6、Li2MoO3In one or more, the purity of the lithium metal oxide is more than
99.5%.
6. a kind of lithium-ion capacitor positive pole according to claim 1, it is characterised in that the binding agent is polyvinylidene fluoride
Alkene, the purity of the binding agent is more than 99.5%.
7. a kind of lithium-ion capacitor for applying lithium-ion capacitor positive pole as described in claim 1-6 is any, its feature exists
In,
The negative pole of the lithium-ion capacitor includes collector and is formed at the negative material of collection liquid surface, the negative material
It is remaining material after cathode size is dried；
It is molten that the cathode size is formed for negative electrode active material, conductive black, binding agent and dispersant are dissolved in decentralized medium
Liquid, the mass ratio of the negative electrode active material, conductive black, binding agent and dispersant is (88-92):(3-7):(1-3):(1-
3)。
8. a kind of lithium-ion capacitor according to claim 7, it is characterised in that the negative electrode active material is graphite-like
One or more in Carbon Materials, including soft charcoal, native graphite, Delanium, purity is more than 99.5%.
9. a kind of lithium-ion capacitor according to claim 7, it is characterised in that the preparation side of the lithium-ion capacitor
Method includes：The preparation of positive and negative electrode pole piece, lithium-ion capacitor assembling and pre- process of intercalation；
The pre- process of intercalation is：Lithium-ion capacitor after assembling is charged into 4.3~5.0V under the conditions of 0.02~0.1C,
The constant pressure 6-10h under the voltage conditions.
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| CN107658138A (en) * | 2017-09-13 | 2018-02-02 | 中南大学 | Li6CoO4Prelithiation agent and the preparation method and lithium-ion capacitor of lithium-ion capacitor |
| CN107680818A (en) * | 2017-08-15 | 2018-02-09 | 宁波中车新能源科技有限公司 | A kind of high rich lithium ion capacitor |
| CN107731559A (en) * | 2017-09-13 | 2018-02-23 | 中南大学 | A kind of LiMnO2Prelithiation agent and the preparation method and lithium-ion capacitor of lithium-ion capacitor |
| CN107910197A (en) * | 2017-09-28 | 2018-04-13 | 宁波中车新能源科技有限公司 | A kind of lithium-ion capacitor and preparation method thereof |
| CN108766781A (en) * | 2018-05-28 | 2018-11-06 | 浙江微创新能源有限公司 | A kind of preparation method of anode sizing agent, positive plate, the positive plate |
| CN109346335A (en) * | 2018-09-28 | 2019-02-15 | 桑顿新能源科技有限公司 | Lithium source active material, anode pole piece, lithium-ion capacitor and preparation method thereof |
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| WO2019200609A1 (en) * | 2018-04-20 | 2019-10-24 | GM Global Technology Operations LLC | Incorporation of lithium-ion source material into an activated carbon electrode for a capacitor-assisted battery |
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| CN109524653A (en) * | 2018-11-21 | 2019-03-26 | 湖南中车特种电气装备有限公司 | A method of lithium-ion capacitor specific capacity is promoted using conducting polymer |
| CN109545566A (en) * | 2018-11-21 | 2019-03-29 | 湖南中车特种电气装备有限公司 | A kind of high specific energy lithium-ion capacitor |
| CN110400704A (en) * | 2019-06-06 | 2019-11-01 | 宁波中车新能源科技有限公司 | A kind of preparation method and application of hybrid capacitors anode |
| CN111029158A (en) * | 2019-12-22 | 2020-04-17 | 北京蒙京石墨新材料科技研究院有限公司 | Lithium ion supercapacitor lithium pre-embedding method |
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| WO2022077685A1 (en) * | 2020-10-16 | 2022-04-21 | 惠州亿纬锂能股份有限公司 | Positive electrode of hybrid capacitor and manufacturing method therefor and use thereof |
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