CN108074750A - A kind of double ion capacitor batteries - Google Patents
A kind of double ion capacitor batteries Download PDFInfo
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- CN108074750A CN108074750A CN201610984193.8A CN201610984193A CN108074750A CN 108074750 A CN108074750 A CN 108074750A CN 201610984193 A CN201610984193 A CN 201610984193A CN 108074750 A CN108074750 A CN 108074750A
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- Prior art keywords
- ion capacitor
- capacitor batteries
- double ion
- carbon material
- carbon
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- 239000003990 capacitor Substances 0.000 title claims abstract description 40
- 239000003792 electrolyte Substances 0.000 claims abstract description 37
- 239000012528 membrane Substances 0.000 claims abstract description 30
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 29
- 239000011149 active material Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 124
- 229910002804 graphite Inorganic materials 0.000 claims description 40
- 239000010439 graphite Substances 0.000 claims description 40
- 150000002500 ions Chemical class 0.000 claims description 40
- 229910003002 lithium salt Inorganic materials 0.000 claims description 20
- 159000000002 lithium salts Chemical class 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 claims description 11
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 claims description 10
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical group CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 9
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 8
- XUPYJHCZDLZNFP-UHFFFAOYSA-N butyl butanoate Chemical compound CCCCOC(=O)CCC XUPYJHCZDLZNFP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 8
- 229910021389 graphene Inorganic materials 0.000 claims description 8
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 8
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 6
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 claims description 6
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 5
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 5
- AIDFJGKWTOULTC-UHFFFAOYSA-N 1-butylsulfonylbutane Chemical compound CCCCS(=O)(=O)CCCC AIDFJGKWTOULTC-UHFFFAOYSA-N 0.000 claims description 4
- BJEWLOAZFAGNPE-UHFFFAOYSA-N 1-ethenylsulfonylethane Chemical compound CCS(=O)(=O)C=C BJEWLOAZFAGNPE-UHFFFAOYSA-N 0.000 claims description 4
- PLUBXMRUUVWRLT-UHFFFAOYSA-N Ethyl methanesulfonate Chemical compound CCOS(C)(=O)=O PLUBXMRUUVWRLT-UHFFFAOYSA-N 0.000 claims description 4
- JGFBQFKZKSSODQ-UHFFFAOYSA-N Isothiocyanatocyclopropane Chemical compound S=C=NC1CC1 JGFBQFKZKSSODQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910013188 LiBOB Inorganic materials 0.000 claims description 4
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 4
- OBNCKNCVKJNDBV-UHFFFAOYSA-N butanoic acid ethyl ester Natural products CCCC(=O)OCC OBNCKNCVKJNDBV-UHFFFAOYSA-N 0.000 claims description 4
- PWLNAUNEAKQYLH-UHFFFAOYSA-N butyric acid octyl ester Natural products CCCCCCCCOC(=O)CCC PWLNAUNEAKQYLH-UHFFFAOYSA-N 0.000 claims description 4
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
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- 229940017219 methyl propionate Drugs 0.000 claims description 4
- UUIQMZJEGPQKFD-UHFFFAOYSA-N n-butyric acid methyl ester Natural products CCCC(=O)OC UUIQMZJEGPQKFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- HUAZGNHGCJGYNP-UHFFFAOYSA-N propyl butyrate Chemical compound CCCOC(=O)CCC HUAZGNHGCJGYNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 3
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 229910010912 Li2B12F12 Inorganic materials 0.000 claims description 2
- 229910010942 LiFP6 Inorganic materials 0.000 claims description 2
- 229910010941 LiFSI Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000010405 anode material Substances 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 claims description 2
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- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 2
- HNAGHMKIPMKKBB-UHFFFAOYSA-N 1-benzylpyrrolidine-3-carboxamide Chemical compound C1C(C(=O)N)CCN1CC1=CC=CC=C1 HNAGHMKIPMKKBB-UHFFFAOYSA-N 0.000 claims 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- UFLFSNVZQRNKOX-UHFFFAOYSA-N carbonic acid;ethenyl acetate Chemical compound OC(O)=O.CC(=O)OC=C UFLFSNVZQRNKOX-UHFFFAOYSA-N 0.000 claims 1
- 239000003610 charcoal Substances 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 28
- 150000001450 anions Chemical class 0.000 description 26
- 239000011230 binding agent Substances 0.000 description 22
- 239000002033 PVDF binder Substances 0.000 description 20
- 238000001035 drying Methods 0.000 description 20
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 20
- 238000002156 mixing Methods 0.000 description 19
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 description 17
- 238000004146 energy storage Methods 0.000 description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 13
- 229910052744 lithium Inorganic materials 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- -1 graphite Anion Chemical class 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000002985 plastic film Substances 0.000 description 8
- 229920006255 plastic film Polymers 0.000 description 8
- 239000006260 foam Substances 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 239000006258 conductive agent Substances 0.000 description 6
- 229920001410 Microfiber Polymers 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000003658 microfiber Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 229910013872 LiPF Inorganic materials 0.000 description 3
- 101150058243 Lipf gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007770 graphite material Substances 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- CSSYKHYGURSRAZ-UHFFFAOYSA-N methyl 2,2-difluoroacetate Chemical compound COC(=O)C(F)F CSSYKHYGURSRAZ-UHFFFAOYSA-N 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- FOGXNLSCXDTSDL-UHFFFAOYSA-N B(OF)([O-])[O-].B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.[Li+].[Li+] Chemical compound B(OF)([O-])[O-].B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.B(OF)(O)O.[Li+].[Li+] FOGXNLSCXDTSDL-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000002134 carbon nanofiber Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance 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
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
-
- 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
- H01G11/32—Carbon-based
-
- 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
-
- 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
- H01G11/54—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, 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
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/62—Liquid electrolytes characterised by the solute, e.g. salts, anions or cations therein
-
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to a kind of double ion capacitor batteries.A kind of double ion capacitor batteries of the present invention, including anode, cathode, membrane and electrolyte, the active material of the anode is carbon material；Positive electrode surface forms electric double layer capacitance.Double ion capacitor batteries provided by the invention solve the problems, such as that coulombic efficiency and cyclical stability are poor, while have higher energy density compared to Dual-ion cell and ultracapacitor.
Description
Technical field
The present invention relates to a kind of double ion capacitor batteries.
Background technology
In recent years due to the large-scale commercial application of lithium ion battery, the reserves of lithium are fewer and fewer on the earth, lithium price
Inherently in the trend of a rise, so for lithium ion battery, Dual-ion cell cost is lower.
In Dual-ion cell, by taking double graphite cells that positive and negative electrode material is all made of graphite as an example, electrolyte salt is
LiPF6.When battery charges, the Li in electrolyte+Ion is migrated and is embedded into cathode graphite, PF to cathode6 -Ion is to just
Pole migrates and is embedded into anode graphite；When the cell is discharged, the anions and canons being embedded in positive and negative electrode return to again
Xun Huan is realized in electrolyte.
Compared to traditional lithium ion battery, Dual-ion cell has higher charging/discharging voltage, although Dual-ion cell
Positive and negative electrode all employs graphitic carbon material, effectively reduces the cost of battery.But current Dual-ion cell is shown
Phenomena such as coulombic efficiency is low, and cyclical stability is poor, the main reason is that PF6 -Ion is compared to Li+Ion has the space of bigger
Size, thus be difficult to be completely embedded into graphite lattice when battery charges；PF6 -State of the ion in positive electrode is one
Divide and be embedded into graphite lattice, also have substantial amounts of PF6 -Ion adsorbs only on positive electrode surface, after stopping charging, absorption
PF on positive electrode surface6 -Ion has been returned in electrolyte again.This has resulted in the reduction of discharge capacity of the cell, with
And the cumulative situation of lithium ion of cathode.Meanwhile after multiple charge and discharge cycles, battery shows internal resistance increase,
The problems such as capacity attenuation is serious.
The positive extreme direction of carbon is concentrated mainly on for the study on the modification of Dual-ion cell, the carbon positive electrode of embedding anion is direct
Determine the cyclical stability of Dual-ion cell.Preferable Dual-ion cell carbon positive electrode should both can guarantee anion
Stablize insertion and deintercalation, while but also with higher storage anion capacity, however do not fully meet at present requirement it is double from
Sub- cell positive material.A large amount of insertions of anion can cause carbon positive electrode graphite linings to come off, structure collapses, so as to cause electricity
Tankage irreversible loss.Anion can only be partially submerged into carbon positive electrode in Dual-ion cell, and the specific volume of carbon positive electrode
Amount directly affects the energy density of Dual-ion cell, this is another problem in current Dual-ion cell carbon positive electrode.
Meanwhile in Dual-ion cell, it is difficult to be embedded into graphite lattice since anion size is larger and causes such as storehouse
A series of problems, such as human relations efficiency is low, and cyclical stability is poor, and charging and discharging capacity is limited solves method there is presently no effective, and
These problems are also the key point that Dual-ion cell moves towards practical application.
The content of the invention
To solve the above problems, the present invention provides a kind of double ion capacitor batteries, including anode, cathode, membrane and electricity
Solve liquid；The active material of the anode is carbon material；Positive electrode surface forms electric double layer capacitance.In the present invention, the anode provides
The place of anion insertion.
The new double ion capacitor batteries of the present invention are by special anode material on the basis of Dual-ion cell energy storage
The design of the material such as capacitive character activated carbon of bigger serface is mixed into material design or electrode material, Dual-ion cell is made to have simultaneously
The characteristic of standby ultracapacitor chemically reacts energy storage so as to fulfill the electric double layer physics energy storage of battery and reversible faraday.Such as
Graphite and activated carbon are used as anode, graphite is the double ion capacitor batteries of cathode, and when battery charges, graphite cathode obtains electricity
Subband negative electrical charge, while Li positively charged in electrolyte+It migrates and is embedded into cathode graphite to cathode, and anode is then at this time
Lose that electronics is positively charged, negatively charged PF in electrolyte6 -Ion migrates to anode and is partially embedded into anode graphite material
In, due to PF6 -Ion size is larger to be difficult to be completely embedded into anode graphite material, therefore the positive charge of positive electrode institute band is not
It can be neutralized completely still with superfluous positive charge, there is bigger serface using activated carbon in positive electrode at this time,
By the negatively charged PF in part6 -Ionic adsorption forms stable electric double layer on positive electrode surface and superfluous positive charge, so as to
Realize electric double layer energy storage (see Fig. 1).The formation of the electric double layer is avoided in anode graphite causes stone since anion is excessively embedded
Layer of ink is peeled off, structure collapses, so as to cause the irreversible attenuation of capacity.
The special designing of positive electrode of the present invention needs to realize forms stable absorption to the anionic part for being not embedded into anode
Effect, therefore can both select to add in the material with adsorption capacity such as activated carbon in anode, anode can also be designed as
The material of bigger serface.
The energy storage mode of double ion capacitor batteries of the present invention belongs to asymmetric energy storage, passes through cation in cathode
It is embedded to realize energy storage, and be then that energy storage is realized by the insertion of anion and surface formation electric double layer in anode.
As a kind of embodiment, the carbon material specific surface area is 100m2/ g~4000m2/g；The carbon material hole
Rate is 0.1cm3/ g~10cm3/g；Preferably, the carbon material specific surface area is 1000m2/ g~2200m2/g；The carbon materials
Material porosity is 0.2cm3/ g~5cm3/g.The present invention combines Dual-ion cell and ultracapacitor, prepares the present invention double
Ion capacitance battery possesses excellent energy-storage property and cycle performance.Wherein, the design of Dual-ion cell especially anion is embedding
The increase for entering amount ensures that ultracapacitor of the present invention obtains excellent stored energy capacitance；The design of anode electric double layer ensures that the present invention is double
Ar ion mixing capacitor batteries obtain excellent cycle performance.So there is the carbon of high-specific surface area and high porosity in the present invention
Material can not only be conducive to the insertion of anion, while also improve the electric double layer stored energy capacitance of the present invention, further improve
The cyclical stability and coulombic efficiency of double ion capacitor batteries of the present invention.
As a kind of embodiment, the carbon material is selected from activated carbon, porous carbon, carbon nanotubes, foamy graphite, graphene
And at least one of carbonaceous mesophase spherules；Preferably, the carbon material is foamy graphite and/or graphene.Selected by the present invention
Carbon material has high-specific surface area, and the structure of high porosity makes it possess certain specific property of charge storage and forms electric double layer electricity
Hold, while can realize that stablizing for anion is embedded in again.
The present invention also provides a kind of double ion capacitor batteries, the carbon material include selected from native graphite, foamy graphite,
The mixture of at least one of carbonaceous mesophase spherules and graphene and activated carbon；Preferably, the carbon material includes natural stone
Ink and activated carbon.
Positive electrode of the present invention can realize that stablizing for anion is embedded in and is formed on the surface of material stable
Electric double layer capacitance.To use graphite and activated carbon exemplified by the double ion capacitor batteries of anode, however, this should not be construed as
Limitation of the present invention, using the double ion capacitor batteries that graphite and activated carbon are anode when charging, the anion in electrolyte
Anode is moved to, a part of anion, which is embedded into the lattice of graphite material, realizes chemical energy storage, and another part anion is just
The activated carbon surface of pole forms stable electric double layer and realizes electric double layer energy storage；And when the cell is discharged, it is intracell to be embedded into graphite
Anion and surface formed electric double layer anion return to again in electrolyte realize battery cycling.
As a kind of embodiment, the quality of the activated carbon is the 5%~80% of the carbon material quality；As excellent
Choosing, the quality of the activated carbon are the 20%~50% of the carbon material quality.In the present invention, the addition of activated carbon be to provide compared with
Big specific surface area realizes electric double layer energy storage, and the embedded storage of anion is realized if another component such as graphite in active material
Energy.If the amount of activated carbon is very little, the effect of extra anion in storage anode cannot be fully achieved, while will also result in graphite
The problem of excessively insertion causes graphite-structure unstable for middle anion, battery capacity irreversible attenuation.If activated carbon is excessive, due to
The stored energy capacitance that anion is embedded in graphite is far above the electric double layer stored energy capacitance of activated carbon, can not only reduce containing for graphite
Amount also reduces the specific capacity of positive electrode active materials indirectly.Therefore, preferably activated carbon content of the invention can guarantee to obtain this hair
The technique effect of bright double ion capacitor batteries.
As a kind of embodiment, the active material of the cathode in metal, alloy, metal oxide and graphite extremely
Few one kind.
As a kind of embodiment, the membrane is selected from ceramic diaphragm, glass microfiber membrane, polymer separators or nonwoven
Cloth diaphragm.
As a kind of embodiment, the electrolyte includes lithium salts, and the lithium salts is selected from LiFP6(Lithium
hexafluorophosphate)、LiTFSI(Lithium bis(trifluoromethylsulfonyl)imide)、LiClO4
(Lithium perchlorate)、LiFSI(Lithium bis(fluorosulfonyl)imide)、LiFNFSI(lithium
(fluorosulfonyl)-(nonafluorobutanesulfonyl)imide)、LiSAB(lithium
salicylatoborate)、LiTADC(lithium1,2,3-triazole-4,5-dicarbonitrile)、LiAsF6
(Lithium hexafluoroarsenate)、LiBETI(lithium bis-(pentafluoroethanesulfonyl)
imide)、LiBOB(lithium bis(oxalato)borate)、LiTOP(lithium Tristan(oxalato)
phophate)、LiTFOP(lithium tetrafluorooxalatophosphate)、LiTFBP(tris[3-fluoro-1,
2-benzenediolato(2-)-O,O′]phosphate)、LiTBP(lithium tris[1,2-benzenediolato
(2-)-O,O′]phosphate)、LiFAB(lithium pentafluoroethyltrifluoroborate)、LiMOB
(lithium(malonatooxalato)borate)、LIDFOB(lithium difluorooxalatoborate)、Li2DFB
(dilithium dodecafluoro dodecaborate)、Li2B12F12(dilithium
dodecafluorododecaborate)、LiB(CN)4(tetracyanoborate) and LiBF4(Lithium
At least one of tetrafluoroborate).Preferably, the lithium salts is selected from LiPF6、LiTFSI、LiBETI、LiClO4、
At least one of LiBOB and LiTSI.Lithium salts has not only acted as the effect of ion conductor in the present invention, it is often more important that provides
Anions and canons needed for positive and negative anodes.
As a kind of embodiment, the lithium salt is 1mol/L~12mol/L；Preferably, the lithium salt
For 4mol/L~8mol/L.In double ion capacitor batteries of the present invention, cathode realizes the insertion energy storage of cation, and anode is then
It realizes the insertion of anion and forms electric double layer energy storage, lithium ion is only played compared to lithium salts in conventional lithium ion battery electrolyte
The effect of transmission, in electrolyte of the present invention lithium salts not only provide that positive and negative anodes are embedded and electric double layer formed required negative and positive from
Son, while be also energy storage active material.Therefore lithium salt cannot be too low, and the higher use that can reduce electrolyte of lithium salt
Amount reduces the gross mass of battery, so as to improve the energy density of battery indirectly；But when lithium salt is excessively high, lithium salts cannot be complete
Fully dissolved, and electrolyte is more sticky, ionic conductivity is relatively low, so as to influence battery high rate performance.So the present invention is preferably
Lithium salt, which can guarantee, obtains preferable effect.
As a kind of embodiment, the electrolyte includes organic solvent, and the organic solvent is selected from methyl ethyl carbonate
(EMC), dimethyl ether (DME), dimethyl carbonate (DMC), diethyl carbonate (DEC), ethylene carbonate (EC), propene carbonate
(PC), propene carbonate (PC), ethyl acetate (EA), methyl propionate (MP), ethyl propionate (EP), methyl butyrate (MB), butyric acid
Ethyl ester (EB), propyl butyrate (PB), butyl butyrate (BB), methyl formate (MF), Ethyl formate (EF), methyl difluoroacetate
(MDF), sulfolane (TMS), ethyl methane sulfonate (EMS), butyl sulfone (BS), ethyl vinyl sulfone (EVS) and ethylene carbonate
At least one of (EC).
As a kind of embodiment, the charge cutoff voltage of the double ion capacitor batteries is in 3V~5V；The double ion
The discharge cut-off voltage of hybrid super capacitor is in 1V~3V.The operating temperature of the double ion capacitor batteries is -40 DEG C~80
℃。
Another object of the present invention is to provide a kind of preparation method of double ion capacitor batteries, is comprised the following steps：
A) positive electrode is mixed coated on plus plate current-collecting body, drying forms positive plate；The positive electrode includes carbon
Material, conductive agent and binding agent；
B) negative material is mixed coated on negative current collector, drying forms negative plate；The negative material includes negative
Active material, conductive agent and the binding agent of pole；
C) positive plate, negative plate, membrane and electrolyte are assembled to obtain double ion capacitor batteries.
As a kind of embodiment, the quality of the carbon material is the 80%~95% of the positive electrode gross mass；Institute
The quality for stating the active material of cathode is the 80%~95% of the negative material gross mass.
As a kind of embodiment, the temperature of the drying and processing is 60 DEG C~200 DEG C；As preferred；At the drying
The temperature of reason is 80 DEG C~150 DEG C.
As a kind of embodiment, the binding agent is Kynoar (PVDF), polytetrafluoroethylene (PTFE) (PTFE) and carboxylic first
At least one of base cellulose (CMC)；Preferably, the binding agent is PVDF.The quality of the binding agent is the anode
The content of material gross mass is 5%~15%；Preferably, the quality of the binding agent is the positive electrode gross mass
5%~8%.
As a kind of embodiment, the conductive agent is in superconduction carbon black, acetylene black, graphene, VGCF and carbon nanotubes
It is at least one；Preferably, the conductive agent is superconduction carbon black and/or graphene.It is total that the conductive agent accounts for the positive electrode
The content of quality is 2%~10%；Preferably, the conductive agent account for the content of the positive electrode gross mass for 3%~
8%.
A kind of double ion capacitor batteries provided by the invention not only ensure that anion stablizes insertion in positive electrode,
Also the anion for being gathered in positive electrode surface is made to form stable electric double layer energy storage.Compared to traditional Dual-ion cell, this hair
Bright double ion capacitor batteries effectively solve the problems, such as that coulombic efficiency is low and cyclical stability is poor, while compared to double ion
Battery and ultracapacitor have higher energy density.
Description of the drawings
Fig. 1：Double ion capacitor batteries charging process schematic diagram of the present invention；
Fig. 2：The charge-discharge performance schematic diagram of the embodiment of the present invention 3；
Fig. 3：The charge and discharge coulombic efficiency schematic diagram of the embodiment of the present invention 3；
Fig. 4：The charge and discharge platform figure of the embodiment of the present invention 3.
Specific embodiment
The present invention is described in detail in following specific embodiment, however the present invention is not restricted to following implementation
Example.
Embodiment 1：
The first step：By native graphite, graphene, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) press 7：2：1
Ratio mixing slurrying after coated in drying in aluminium net as positive plate.
Second step：By carbonaceous mesophase spherules, conductive black, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt)
By 8：1：Coated in drying on aluminium foil as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses glass microfiber membrane, and electrolyte uses the LiPF of 4mol/L6EMC (methyl ethyl carbonates
Ester) solution.
4th step：By above-mentioned electrode slice and membrane by positive plate in the environment of water oxygen content is controlled, membrane, negative plate
Laminated structure injects appropriate electrolyte in CR2032 type battery cases, and button cell is made in sealed cell shell.
5th step：By above-mentioned button cell carry out electrochemical property test, wherein charge-discharge test voltage range for 3V~
5V, specific test result are shown in Table 1.
Embodiment 2：
The first step：By carbonaceous mesophase spherules, activated carbon, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) are pressed
6：3：Coated in drying on carbon cloth as positive plate after 1 ratio mixing slurrying.
Second step：By native graphite, conductive black, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) press 8：
1：Coated in drying on aluminium foil as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses PP polymer separators, and electrolyte uses the methyl ethyl carbonate (EMC) of the LiTFSI of 2mol/L
Solution.
4th step：By above-mentioned electrode slice and membrane by positive plate in the environment of water oxygen content is controlled, membrane, negative plate
Laminated structure injects appropriate electrolyte in aluminum plastic film, and small soft-package battery is made in sealed aluminum plastic film.
5th step：Above-mentioned small soft-package battery is subjected to electrochemical property test, wherein charge-discharge test voltage range is 3V
~5V, specific test result are shown in Table 1.
Embodiment 3：
The first step：By native graphite, activated carbon, PTFE binding agents (PTFE is dissolved in deionized water, concentration 40%wt)
By 4：4：Coated in drying in nickel foam as positive plate after 2 ratio mixing slurrying.
Second step：Directly using metal aluminum foil as negative plate.
3rd step：Membrane uses glass microfiber membrane, and electrolyte uses the LiPF of 6mol/L6Methyl ethyl carbonate
(EMC) solution.
4th step：It is same as Example 1
5th step：By above-mentioned button cell carry out electrochemical property test, wherein charge-discharge test voltage range for 3V~
5V, specific test result are shown in Table 1.
3 test result of embodiment as shown in Figures 2 and 3, wherein, using constant current charge-discharge, charging/discharging voltage section 3~
5V, charge-discharge magnification 0.5C.
Embodiment 4：
The first step：By native graphite, carbon foam, PTFE binding agents (PTFE is dissolved in deionized water, concentration 20%wt)
By 6：3：Coated in drying in nickel foam as positive plate after 1 ratio mixing slurrying.
Second step：By Mo6S8, conductive black, PTFE binding agents (PTFE is dissolved in deionized water, concentration 20%wt) press
8：1：Coated in drying in nickel foam as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses porous ceramics membrane, and electrolyte uses the deionized water solution of the LiTFSI of 10mol/L.
4th step：It is same as Example 1
5th step：Above-mentioned button cell is subjected to electrochemical property test, wherein charge-discharge test voltage range is 1.5V
~3.4V, specific test result are shown in Table 1.
Embodiment 5：
The first step：By foamy graphite, conductive black, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) press 8：
1：Coated in drying on carbon cloth as positive plate after 1 ratio mixing slurrying.
Second step：Directly using metal aluminum foil as negative plate.
3rd step：Membrane uses PP polymer separators, and electrolyte uses the methyl ethyl carbonate (EMC) of the LiTFSI of 2mol/L
Solution.
4th step：By above-mentioned electrode slice and membrane by positive plate in the environment of water oxygen content is controlled, membrane, negative plate
Laminated structure injects appropriate electrolyte in aluminum plastic film, and small soft-package battery is made in sealed aluminum plastic film.
5th step：Above-mentioned small soft-package battery is subjected to electrochemical property test, wherein charge-discharge test voltage range is 3V
~5V, specific test result are shown in Table 1.
Embodiment 6：
The first step：By native graphite, activated carbon, PTFE binding agents (PTFE is dissolved in deionized water, concentration 40%wt)
By 2：6：Coated in drying in nickel foam as positive plate after 2 ratio mixing slurrying.
Second step：By lithium titanate, conductive black, PTFE binding agents (PTFE is dissolved in deionized water, concentration 20%wt)
By 8：1：Coated in drying in nickel foam as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses glass microfiber membrane, and electrolyte uses the LiPF of 4mol/L6Methyl ethyl carbonate
(EMC) solution.
4th step：It is same as Example 1
5th step：Above-mentioned button cell is subjected to electrochemical property test, wherein charge-discharge test voltage range is 1.5V
~3.4V, specific test result are shown in Table 1.
Embodiment 7：
The first step：By native graphite, activated carbon, PTFE binding agents (PTFE is dissolved in deionized water, concentration 40%wt)
By 1：3：Coated in drying in nickel foam as positive plate after 1 ratio mixing slurrying.
Second step：By lithium titanate, conductive black, PTFE binding agents (PTFE is dissolved in deionized water, concentration 20%wt)
By 8：1：Coated in drying in nickel foam as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses glass microfiber membrane, and electrolyte uses the diethyl carbonate of the LiBETI of 1mol/L
(DEC) solution.
4th step：It is same as Example 1
5th step：Above-mentioned button cell is subjected to electrochemical property test, wherein charge-discharge test voltage range is 1.5V
~3.4V, specific test result are shown in Table 1.
Embodiment 8：
The first step：By carbonaceous mesophase spherules, activated carbon, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) are pressed
0.5：8.5：Coated in drying on carbon cloth as positive plate after 1 ratio mixing slurrying.
Second step：By native graphite, conductive black, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) press 8：
1：Coated in drying on aluminium foil as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses PP polymer separators, and electrolyte uses the methyl ethyl carbonate (EMC) of the LiTFSI of 2mol/L
Solution.
4th step：By above-mentioned electrode slice and membrane by positive plate in the environment of water oxygen content is controlled, membrane, negative plate
Laminated structure injects appropriate electrolyte in aluminum plastic film, and small soft-package battery is made in sealed aluminum plastic film.
5th step：Above-mentioned small soft-package battery is subjected to electrochemical property test, wherein charge-discharge test voltage range is 3V
~5V, specific test result are shown in Table 1.
Embodiment 9：
The first step：By carbonaceous mesophase spherules, activated carbon, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) are pressed
6：3：Coated in drying on carbon cloth as positive plate after 1 ratio mixing slurrying.
Second step：By native graphite, conductive black, PVDF binding agents (PVDF is dissolved in NMP, concentration 1%wt) press 8：
1：Coated in drying on aluminium foil as negative plate after 1 ratio mixing slurrying.
3rd step：Membrane uses PP polymer separators, and electrolyte uses the methyl ethyl carbonate of the LiTFSI of 0.2mol/L
(EMC) solution.
4th step：By above-mentioned electrode slice and membrane by positive plate in the environment of water oxygen content is controlled, membrane, negative plate
Laminated structure injects appropriate electrolyte in aluminum plastic film, and small soft-package battery is made in sealed aluminum plastic film.
5th step：Above-mentioned small soft-package battery is subjected to electrochemical property test, wherein charge-discharge test voltage range is 3V
~5V, specific test result are shown in Table 1.
It was found from from embodiment 1 and embodiment 8：When the mixing carbon material using carbonaceous mesophase spherules and activated carbon is as just
Pole material, activated carbon content are up to 94%, when the content of carbonaceous mesophase spherules declines, due to the mesocarbon in mixing carbon material
The stored energy capacitance of microballoon is far above the electric double layer stored energy capacitance of activated carbon, therefore results in the decline of battery specific capacity.
It was found from from embodiment 1 and embodiment 9：When electrolyte is using the methyl ethyl carbonate of the LiTFSI of 0.2mol/L
(EMC) solution, i.e., less than concentration of electrolyte of the present invention when, due to the negative and positive in embedded positive and negative anodes in the battery system from
Son is provided by the lithium salts in electrolyte, and relatively low lithium salt cannot provide sufficient zwitterion and participate in battery in electrolyte
Discharge and recharge reaction, so that the capacity of electrode material cannot play completely.Therefore compared to embodiment 1, the electricity in the embodiment 9
Tank discharge specific capacity is declined.
Table 1
Claims (15)
1. a kind of double ion capacitor batteries, including anode, cathode, membrane and electrolyte, it is characterised in that：The activity of the anode
Material is carbon material；Positive electrode surface forms electric double layer capacitance.
2. double ion capacitor batteries as described in claim 1, it is characterised in that：The carbon material specific surface area is 100m2/ g~
4000m2/g；The carbon material porosity is 0.1cm3/ g~10cm3/g。
3. double ion capacitor batteries as claimed in claim 2, it is characterised in that：The carbon material specific surface area is 1000m2/g
~2200m2/g；The carbon material porosity is 0.2cm3/ g~5cm3/g。
4. double ion capacitor batteries as described in claim 1, it is characterised in that：The carbon material be selected from activated carbon, porous carbon,
At least one of carbon nanotubes, foamy graphite, graphene and carbonaceous mesophase spherules.
5. double ion capacitor batteries as claimed in claim 4, it is characterised in that：The carbon material is foamy graphite and/or stone
Black alkene.
6. double ion capacitor batteries as described in claim 1, it is characterised in that：The carbon material include selected from native graphite,
The mixture of at least one of foamy graphite, carbonaceous mesophase spherules and graphene and activated carbon.
7. double ion capacitor batteries as claimed in claim 6, it is characterised in that：The carbon material includes native graphite and activity
Charcoal.
8. double ion capacitor batteries as claimed in claim 6, it is characterised in that：The quality of the activated carbon is the carbon material
The 5%~80% of quality.
9. double ion capacitor batteries as claimed in claim 8, it is characterised in that：The quality of the activated carbon is the carbon material
The 20%~50% of quality.
10. double ion capacitor batteries as described in claim 1, it is characterised in that：The active material of the cathode be selected from metal,
At least one of alloy, metal oxide and graphite.
11. double ion capacitor batteries as described in claim 1, it is characterised in that：The electrolyte includes lithium salts, the lithium salts
Selected from LiFP6、LiTFSI、LiClO4、LiFSI、LiFNFSI、LiSAB、LiTADC、LiAsF6、LiBETI、LiBOB、LiTOP、
LiTFOP、LiTFBP、LiTBP、LiFAB、LiMOB、LIDFOB、Li2DFB、Li2B12F12、LiB(CN)4And LiBF4In at least one
Kind.
12. double ion capacitor batteries as claimed in claim 11, it is characterised in that：The lithium salts is selected from LiPF6、LiTFSI、
LiBETI、LiClO4, at least one of LiBOB and LiTSI.
13. double ion capacitor batteries as claimed in claim 11, it is characterised in that：The lithium salt for 1mol/L~
12mol/L。
14. double ion capacitor batteries as claimed in claim 13, it is characterised in that：The lithium salt for 4mol/L~
8mol/L。
15. double ion capacitor batteries as described in claim 1, it is characterised in that：The electrolyte includes organic solvent, described
Organic solvent is selected from methyl ethyl carbonate (EMC), dimethyl ether (DME), dimethyl carbonate (DMC), diethyl carbonate (DEC), carbonic acid
Vinyl acetate (EC), propene carbonate (PC), ethyl acetate (EA), methyl propionate (MP), ethyl propionate (EP), methyl butyrate
(MB), ethyl butyrate (EB), propyl butyrate (PB), butyl butyrate (BB), methyl formate (MF), Ethyl formate (EF), difluoro second
Sour methyl esters (MDF), sulfolane (TMS), ethyl methane sulfonate (EMS), butyl sulfone (BS), ethyl vinyl sulfone (EVS) and carbonic acid second
At least one of enester (EC).
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| WO2020192226A1 (en) * | 2019-03-22 | 2020-10-01 | 深圳先进技术研究院 | Lithium titanate battery, preparation method therefor and use thereof |
| CN112164826A (en) * | 2020-09-29 | 2021-01-01 | 中国科学院长春应用化学研究所 | Low-temperature electrolyte of double-ion battery and double-ion battery |
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