CN107910196A - A kind of high tension super capacitor - Google Patents
A kind of high tension super capacitor Download PDFInfo
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- CN107910196A CN107910196A CN201711078631.5A CN201711078631A CN107910196A CN 107910196 A CN107910196 A CN 107910196A CN 201711078631 A CN201711078631 A CN 201711078631A CN 107910196 A CN107910196 A CN 107910196A
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- high tension
- negative electrode
- positive electrode
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- 239000003990 capacitor Substances 0.000 title claims abstract description 33
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003792 electrolyte Substances 0.000 claims abstract description 66
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 53
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical group O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims abstract description 25
- -1 pyrrolidines spiro quaternary ammonium salt Chemical class 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 10
- MBDUIEKYVPVZJH-UHFFFAOYSA-N 1-ethylsulfonylethane Chemical compound CCS(=O)(=O)CC MBDUIEKYVPVZJH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000007654 immersion Methods 0.000 claims abstract description 3
- 239000002006 petroleum coke Substances 0.000 claims description 13
- 230000004913 activation Effects 0.000 claims description 11
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 150000003457 sulfones Chemical class 0.000 claims description 4
- OSNIIMCBVLBNGS-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-2-(dimethylamino)propan-1-one Chemical compound CN(C)C(C)C(=O)C1=CC=C2OCOC2=C1 OSNIIMCBVLBNGS-UHFFFAOYSA-N 0.000 claims 1
- 150000003462 sulfoxides Chemical class 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007086 side reaction Methods 0.000 abstract description 3
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
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- 230000000052 comparative effect Effects 0.000 description 7
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- 241000894007 species Species 0.000 description 4
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- 239000011230 binding agent Substances 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical group CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
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- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 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
- 230000003213 activating effect Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000012620 biological material Substances 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
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 150000003235 pyrrolidines Chemical class 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- 239000011573 trace mineral Substances 0.000 description 1
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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
- H01G11/54—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, 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
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a kind of high tension super capacitor, battery core comprising electrolyte and immersion electrolyte, battery core is by positive electrode, negative electrode and the membrane composition being arranged among positive electrode and negative electrode, activated carbon is attached with positive electrode and negative electrode, it is characterized in that, the solute of the electrolyte is double pyrrolidines spiro quaternary ammonium salt, N, N dimethyl pyrrolidine ammonium tetrafluoroborates, one kind in 1 azabicyclic of N methyl [2.2.2] octane ammonium tetrafluoroborate, the solvent of the electrolyte is sulfolane, dimethyl sulfide, dimethyl sulfoxide (DMSO), one or more in diethyl sulfone；The mass ratio of the positive electrode and negative electrode is more than 1.Mass ratio of the invention to electrolyte, positive/negative plate and the preparation method to activated carbon are improved optimization, compatible and collaboration, so that using ultracapacitor provided by the invention under 3.0V high pressures, side reaction is few, gas production is few, internal resistance variable quantity is small, and inducing capacity fading rate is low, 65 DEG C of high-temperature load service lifes of 3.0V by 500 it is small when be promoted to 2000 it is small when.
Description
Technical field
The present invention relates to electrochemical field, more particularly to a kind of high tension super capacitor.
Background technology
Ultracapacitor is a kind of novel environment friendly storage between traditional capacitor and secondary cell occurred in recent years
Energy device, on the one hand, compared with traditional capacitor, ultracapacitor has the energy density of higher；On the other hand, with storage battery
Compare, ultracapacitor has higher specific power density and longer service life cycle.Therefore, ultracapacitor combines
The advantages of traditional capacitor and storage battery, be a kind of good power back-off and energy storage device, and has been successfully applied in consumption electricity
It is subclass product (such as computer etc.), energy traffic (such as electric automobile, solar energy and wind energy energy storage etc.), medical instrument, logical
Believe the fields such as equipment, power back-off.
The electrode that most common product takes positive and negative anodes identical in quality more in current super capacitor line is wound, and is electrolysed
Liquid solute uses tetraethyl ammonium tetrafluoroborate (TEABF4), solvent is propene carbonate (PC) or acetonitrile (AN), product pressure voltage
Respectively 2.5V and 2.7V.According to formula Q=1/2CU2, the reserve of electricity of capacitor and pressure voltage it is square directly proportional, pressure voltage is got over
Low, the reserve of electricity of product is also lower.As it can be seen that the pressure voltage of existing ultracapacitor is all less than normal, so reserve of electricity is too low, pole
The earth limits the application of ultracapacitor, and therefore, research and development high tension super capacitor can effectively break through the bottle of ultracapacitor
Neck.
The decomposition voltage of electrolyte determines the operating voltage of capacitor, and therefore, research and development high tension super capacitor uses
Electrolysis liquid energy effectively breaks through the bottleneck of ultracapacitor, especially finds the solute of proof voltage higher, and more to realize super electricity
The high proof voltage of container and long-life it is well balanced.
The content of the invention
The defects of in order to make up prior art, the present invention provide a kind of high tension super capacitor.
The technical problems to be solved by the invention are achieved by the following technical programs：
A kind of high tension super capacitor, comprising electrolyte and immerse electrolyte battery core, battery core be by positive electrode, negative electrode and
It is arranged at the membrane among positive electrode and negative electrode to form, is attached with activated carbon on positive electrode and negative electrode, it is characterised in that institute
The solute for stating electrolyte is double pyrrolidines spiro quaternary ammonium salt, N, N- dimethyl pyrrolidines ammonium tetrafluoroborate, N- methyl isophthalic acids-azepine two
One kind in ring [2.2.2] octane ammonium tetrafluoroborate, the solvent of the electrolyte is sulfolane, dimethyl sulfide, dimethyl Asia
One or more in sulfone, diethyl sulfone；The mass ratio of the positive electrode and negative electrode is more than 1.
Further, the mass ratio of the positive electrode and negative electrode is more than 1, and less than 2.
Further, the mass ratio of the positive electrode and negative electrode is 1.5.
Further, the concentration of the electrolyte is 1-2mol/L.
Further, the concentration of the electrolyte is 1.2mol/L.
Further, the solute of the electrolyte is double pyrrolidines spiro quaternary ammonium salt, and the solvent of the electrolyte is ring fourth
Sulfone and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5.
Further, the solute of the electrolyte is N, N- dimethyl pyrrolidine ammonium tetrafluoroborates, the electrolyte it is molten
Agent is sulfolane and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5.
Further, the solute of the electrolyte is N- methyl isophthalic acids-azabicyclic [2.2.2] octane ammonium tetrafluoroborate, institute
The solvent for stating electrolyte is sulfolane and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5.
Further, the activated carbon is prepared using petroleum coke as raw material and through steam activation.
Further, the high tension super capacitor refers to that the pressure voltage of ultracapacitor is 3V.
The present invention has the advantages that：
Mass ratio of the invention to electrolyte, positive/negative plate and the preparation method to activated carbon are improved optimization, mutually simultaneous
Hold and cooperate with so that using ultracapacitor provided by the invention under 3.0V high pressures, side reaction is few, and gas production is few, interior resistive
Change amount is small, and inducing capacity fading rate is low, 65 DEG C of high-temperature load service lifes of 3.0V by 500 it is small when be promoted to 2000 it is small when.
It should be noted that the solution have the advantages that each step technique feature synergistic effect summation, each step it
Between there is the simple superposition of certain inherent correlation, not single technical characteristic effect.
Embodiment
A kind of high tension super capacitor, the battery core comprising electrolyte and immersion electrolyte, battery core is by positive electrode, negative electricity
Pole and the membrane composition being arranged among positive electrode and negative electrode.
The solute of the electrolyte is double pyrrolidines spiro quaternary ammonium salt, N, N- dimethyl pyrrolidines ammonium tetrafluoroborate, N- first
One kind in base -1- azabicyclics [2.2.2] octane ammonium tetrafluoroborate, the solvent of the electrolyte is sulfolane, dimethyl disulfide
One or more in ether, dimethyl sulfoxide (DMSO), diethyl sulfone.Preferably, the solute of the electrolyte is double pyrrolidines loop coil seasons
Ammonium salt, the solvent of the electrolyte are sulfolane and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:
5；It is highly preferred that the solute of the electrolyte is N, N- dimethyl pyrrolidine ammonium tetrafluoroborates, the solvent of the electrolyte is ring
Fourth sulfone and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5；It is highly preferred that the electrolyte is molten
Matter is N- methyl isophthalic acids-azabicyclic [2.2.2] octane ammonium tetrafluoroborate, and the solvent of the electrolyte is sulfolane and dimethyl disulfide
Ether, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5.
Electrolyte is the important component of ultracapacitor, the stability of electrolyte, decomposition voltage, ionic diameter, electricity
Negativity etc. is to influence the important performance factor of performance of the supercapacitor.The composition of the electrolyte of super capacitor is generally by tetrem at present
Base ammonium tetrafluoroborate is dissolved in propene carbonate, or acetonitrile, and the upper voltage limit of this electrolyte is only 2.7V, energy density
It is very limited.Improvement is optimized to the formula of electrolytic solution for super capacitor in the present invention, molten to what is added in electrolyte
Matter and solvent composition have carried out screening design, improve its high voltage withstanding performance.The electrolysis liquid energy is under high voltages（More than 3.0V）
Use, make ultracapacitor that there is the energy density and security performance of higher.
The mass ratio of the positive electrode and negative electrode is more than 1.Preferably, the mass ratio of the positive electrode and negative electrode is more than
1, and less than 2；It is highly preferred that the mass ratio of the positive electrode and negative electrode is 1.5.
Electrode is the core component of ultracapacitor, is made of active material layer and collector, its performance quality is right
The capacity of ultracapacitor, internal resistance etc. have critical influence.In general, the positive electrode of ultracapacitor and the matter of negative electrode
Amount is than being 1.Inventor has found that, when the mass ratio of positive electrode and negative electrode is more than 1, the pressure-resistant performance of product will by numerous studies
It is significantly better than the product that positive and negative anodes mass ratio is equal to 1.
In the present invention, the concentration of the electrolyte is 1-2mol/L.Preferably, the concentration of the electrolyte is 1.2mol/
L。
In the present invention, activated carbon is attached with the positive electrode and negative electrode.The activated carbon is using petroleum coke as raw material
And it is prepared through steam activation.
Activated carbon is the active material of electrode, and the effect in ultracapacitor is for adsorbing charged ion, storage electricity
Lotus.Ripe super capacitor process for preparing activated carbon mainly has two kinds on current market：A, steam activation (physically activated),
The raw material used are mainly self-sown biological material, such as：Timber, bamboo, coconut husk, rice husk etc., because of composition of raw material
Complexity, the more difficult removing of trace element therein, easily causes the generation of side reaction；B, highly basic activation (chemical activation), the original used
Material is mainly coal, petroleum coke, pitch etc., and chemical composition is relatively single, but due to needing to introduce in activation process
The highly basic such as NaOH or KOH make activator, virtually introduce Na again+Or K+, and two kinds of more difficult removings of ion.
The production technology of activated carbon used in the present invention is to have gathered both advantages, and activating process takes vapor
Activation, raw material use petroleum coke, significantly reduce the introducing of impurity, and reduce activated carbon surface functional group, can be with
It is obviously improved the pressure-resistant performance of ultracapacitor.
Specifically, the preparation method of the activated carbon is：
（1）Petroleum coke is crushed, is dried for standby；（2）Above-mentioned petroleum coke is placed in retort, is risen in the case where nitrogen is protected
Temperature is passed through steam activation, soak time 1-2h, then naturally cools to room to 800-900 DEG C with the speed of 0.4mL/min
Temperature.
It should be strongly noted that the mass ratio to electrolyte, positive/negative plate and the preparation method progress to activated carbon
Improve and optimizate, be not independent between three, pressure voltage height is mutually to cooperate with obtained, is indivisible.
In the present invention, the positive electrode and negative electrode further include collector, conductive agent, binding agent.
The present invention is not particularly limited the species of binding agent, can be polytetrafluoroethylene (PTFE) (PTFE), homopolymerization as an example
Or copolymerization vinylidene (PVDF), modified polyacrylic acid and its esters, butadiene-styrene rubber, polyvinyl alcohol, sodium carboxymethylcellulose.
The present invention is not particularly limited the species of conductive agent, as an example, can be acetylene carbon black, conductive carbon fibre,
Electrically conductive graphite.
The present invention is not particularly limited the species of collector, can be aluminium foil, aluminium net, copper foil, copper mesh, foam as an example
Same collector may be selected in nickel, nickel foil or nickel screen, plus plate current-collecting body and negative current collector, can also select different affluxs
Body.
The present invention is not particularly limited the species of membrane, can be paper membrane, polyethene microporous membrane as enumerating
(PE), microporous polypropylene membrane (PP), composite membrane (PP/PE), inorganic ceramic membrane, fibreglass diaphragm.
The present invention is not particularly limited the preparation method of ultracapacitor, can be that any type is conventional in this area
Preparation process, can be as an example：（1）Activated carbon, conductive agent, binding agent are uniformly mixed and are tuned into slurry, is finally coated on
Positive electrode and negative electrode is made by drying, roll-in, cutting on collector；（2）Nail volume；（3）Baking；（4）Fluid injection；（5）Sealing；
（6）Burn-in test.
With reference to embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention,
It is not limitation of the invention.
Embodiment 1
A kind of high tension super capacitor, comprising electrolyte and immerse electrolyte battery core, battery core be by positive electrode, negative electrode and
The membrane composition being arranged among positive electrode and negative electrode.
The solute of the electrolyte is double pyrrolidines spiro quaternary ammonium salt, and the solvent of the electrolyte is sulfolane and dimethyl
Thioether, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5；The concentration of the electrolyte is 1.2mol/L；The positive electricity
The mass ratio of pole and negative electrode is 1.5.
Activated carbon is attached with the positive electrode and negative electrode, the preparation method of the activated carbon is：
（1）Petroleum coke is crushed, is dried for standby；（2）Above-mentioned petroleum coke is placed in retort, is risen in the case where nitrogen is protected
Temperature is passed through steam activation, soak time 1-2h, then naturally cools to room to 800-900 DEG C with the speed of 0.4mL/min
Temperature.
Embodiment 2
A kind of high tension super capacitor, comprising electrolyte and immerse electrolyte battery core, battery core be by positive electrode, negative electrode and
The membrane composition being arranged among positive electrode and negative electrode.
The solute of the electrolyte is N, and N- dimethyl pyrrolidine ammonium tetrafluoroborates, the solvent of the electrolyte is sulfolane
And dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5；The mass ratio of the positive electrode and negative electrode
For 1.2；The concentration of the electrolyte is 1mol/L.
Activated carbon is attached with the positive electrode and negative electrode, the preparation method of the activated carbon is：
（1）Petroleum coke is crushed, is dried for standby；（2）Above-mentioned petroleum coke is placed in retort, is risen in the case where nitrogen is protected
Temperature is passed through steam activation, soak time 1-2h, then naturally cools to room to 800-900 DEG C with the speed of 0.4mL/min
Temperature.
Embodiment 3
A kind of high tension super capacitor, comprising electrolyte and immerse electrolyte battery core, battery core be by positive electrode, negative electrode and
The membrane composition being arranged among positive electrode and negative electrode.
The solute of the electrolyte is N- methyl isophthalic acids-azabicyclic [2.2.2] octane ammonium tetrafluoroborate, the electrolyte
Solvent is sulfolane and dimethyl sulfide, wherein, the volume ratio of sulfolane and dimethyl sulfide is 5:5；The electrolyte it is dense
Spend for 2mol/L；The mass ratio of the positive electrode and negative electrode is 1.8.
Activated carbon is attached with the positive electrode and negative electrode, the preparation method of the activated carbon is：
（1）Petroleum coke is crushed, is dried for standby；（2）Above-mentioned petroleum coke is placed in retort, is risen in the case where nitrogen is protected
Temperature is passed through steam activation, soak time 1-2h, then naturally cools to room to 800-900 DEG C with the speed of 0.4mL/min
Temperature.
Comparative example 1
Based on embodiment 1, the difference is that only：The solute of electrolyte is tetraethyl ammonium tetrafluoroborate in this comparative example, electrolysis
The solvent of liquid is acetonitrile.
Comparative example 2
Based on embodiment 1, the difference is that only：The mass ratio of positive electrode described in this comparative example and negative electrode is 1.
Comparative example 3
Based on embodiment 1, the difference is that only：Activated carbon described in this comparative example uses conventional activated carbon.
Ultracapacitor 50F (Φ 18*40) to embodiment 1-3 and comparative example 1-3 while test 65 DEG C of high temperature of 3.0V and bear
The lotus service life carries out performance detection, and the results are shown in Table 1.
It can be seen that when electrolyte do not improve, the mass ratio of positive electrode and negative electrode is not improved, the preparation method of activated carbon not into
Row improves, and causes the indices of gained ultracapacitor to be greatly lowered, it was demonstrated that only at the same time using these processing
And/or technological parameter, best technique effect could be obtained.
Embodiment described above only expresses embodiments of the present invention, its description is more specific and detailed, but can not
Therefore the limitation to the scope of the claims of the present invention is interpreted as, as long as the skill obtained using the form of equivalent substitution or equivalent transformation
Art scheme, should all fall within the scope and spirit of the invention.
Claims (10)
1. a kind of high tension super capacitor, the battery core comprising electrolyte and immersion electrolyte, battery core is by positive electrode, negative electrode
And the membrane composition among positive electrode and negative electrode is arranged at, it is attached with activated carbon on positive electrode and negative electrode, it is characterised in that
The solute of the electrolyte is double pyrrolidines spiro quaternary ammonium salt, N, N- dimethyl pyrrolidines ammonium tetrafluoroborate, N- methyl isophthalic acids-azepine
One kind in two rings [2.2.2] octane ammonium tetrafluoroborate, the solvent of the electrolyte is sulfolane, dimethyl sulfide, dimethyl
One or more in sulfoxide, diethyl sulfone；The mass ratio of the positive electrode and negative electrode is more than 1.
2. high tension super capacitor as claimed in claim 1, it is characterised in that the mass ratio of the positive electrode and negative electrode
More than 1, and less than 2.
3. high tension super capacitor as claimed in claim 2, it is characterised in that the mass ratio of the positive electrode and negative electrode
For 1.5.
4. high tension super capacitor as claimed in claim 1, it is characterised in that the concentration of the electrolyte is 1-2mol/
L。
5. high tension super capacitor as claimed in claim 4, it is characterised in that the concentration of the electrolyte is 1.2mol/
L。
6. high tension super capacitor as claimed in claim 1, it is characterised in that the solute of the electrolyte is double pyrrolidines
Spiro quaternary ammonium salt, the solvent of the electrolyte are sulfolane and dimethyl sulfide, wherein, the volume of sulfolane and dimethyl sulfide
Than for 5:5.
7. high tension super capacitor as claimed in claim 1, it is characterised in that the solute of the electrolyte is N, N- diformazans
Base pyrrolidines ammonium tetrafluoroborate, the solvent of the electrolyte are sulfolane and dimethyl sulfide, wherein, sulfolane and dimethyl disulfide
The volume ratio of ether is 5:5.
8. high tension super capacitor as claimed in claim 1, it is characterised in that the solute of the electrolyte for N- methyl-
1- azabicyclics [2.2.2] octane ammonium tetrafluoroborate, the solvent of the electrolyte are sulfolane and dimethyl sulfide, wherein, ring
The volume ratio of fourth sulfone and dimethyl sulfide is 5:5.
9. high tension super capacitor as claimed in claim 1, it is characterised in that the activated carbon is using petroleum coke as raw material
And it is prepared through steam activation.
10. high tension super capacitor as claimed in claim 1, it is characterised in that the high tension super capacitor refers to
The pressure voltage of ultracapacitor is 3V.
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| CN109243860A (en) * | 2018-11-29 | 2019-01-18 | 重庆中科超容科技有限公司 | A kind of high voltage withstanding electrolyte and its application in high tension super capacitor |
| CN110379645A (en) * | 2019-07-18 | 2019-10-25 | 中国科学院长春应用化学研究所 | It is a kind of for the mixing salt electrolyte of high tension super capacitor and its application |
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