CN109961956A - Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor - Google Patents
Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor Download PDFInfo
- Publication number
- CN109961956A CN109961956A CN201711405250.3A CN201711405250A CN109961956A CN 109961956 A CN109961956 A CN 109961956A CN 201711405250 A CN201711405250 A CN 201711405250A CN 109961956 A CN109961956 A CN 109961956A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- lithium
- carbonic ester
- mass ratio
- lithium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 49
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 36
- 239000003990 capacitor Substances 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 17
- 229910021389 graphene Inorganic materials 0.000 title abstract description 5
- -1 lithium pentafluorophenyl imide Chemical class 0.000 claims abstract description 20
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 17
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims abstract description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 239000011241 protective layer Substances 0.000 claims abstract description 6
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 150000002148 esters Chemical class 0.000 claims description 37
- 229910002804 graphite Inorganic materials 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 21
- 238000013329 compounding Methods 0.000 claims description 11
- QRMHDYCPNIVCBO-UHFFFAOYSA-N [SH2]=N.[F] Chemical compound [SH2]=N.[F] QRMHDYCPNIVCBO-UHFFFAOYSA-N 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 10
- DGTVXEHQMSJRPE-UHFFFAOYSA-M difluorophosphinate Chemical compound [O-]P(F)(F)=O DGTVXEHQMSJRPE-UHFFFAOYSA-M 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- 150000005677 organic carbonates Chemical class 0.000 claims description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- QTZBTBLHYPSFMG-UHFFFAOYSA-N 5-chloro-3-methylpyridin-2-amine Chemical compound CC1=CC(Cl)=CN=C1N QTZBTBLHYPSFMG-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000011245 gel electrolyte Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 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 abstract 2
- IGILRSKEFZLPKG-UHFFFAOYSA-M lithium;difluorophosphinate Chemical compound [Li+].[O-]P(F)(F)=O IGILRSKEFZLPKG-UHFFFAOYSA-M 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 125000001165 hydrophobic group Chemical group 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 150000005676 cyclic carbonates Chemical class 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- QXPTZCKMBHNQCL-UHFFFAOYSA-N 1,1,1-trifluorobutan-2-yl hydrogen carbonate Chemical compound CCC(C(F)(F)F)OC(O)=O QXPTZCKMBHNQCL-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 210000001787 dendrite Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000005486 organic electrolyte Substances 0.000 description 2
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 1
- IDGCBXSROJHVOG-UHFFFAOYSA-N [Li].[SH2]=N.[F] Chemical compound [Li].[SH2]=N.[F] IDGCBXSROJHVOG-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229940021013 electrolyte solution Drugs 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 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
- H01G11/54—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
-
- 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
- H01G11/64—Liquid electrolytes characterised by additives
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to an electrolyte for a high-voltage graphene-based water-based lithium ion capacitor. The invention belongs to the technical field of electrolyte. The electrolyte for the high-voltage graphene-based water-based lithium ion capacitor comprises two parts: (1) aqueous electrolyte composition: water and lithium salt are combined into a water-based electrolyte, the lithium salt is one or a plurality of compounds of lithium bis (fluorosulfonyl) imide, lithium pentafluorophenyl imide and lithium difluorophosphate, and the mass ratio is 100: 10-99: 30-99, the total concentration of salt is 3-20 mol/L; (2) negative electrode protection component: the negative electrode protection component is characterized in that a protective layer with a conductive hydrophobic group is coated on the surface of a negative electrode, the protective layer is a solid gel electrolyte layer and is one or a plurality of conductive electrolytes of lithium bis (fluorosulfonyl) imide, lithium pentafluorophenyl imide and lithium difluorophosphate, and the mass ratio is 100: 10-99: 30-99, the total concentration of salt is 1-3mol/L, carbonate organic solvent and polymer monomer. The invention has the advantages of high conductivity, stable existence, safety, reliability, wide application range and the like.
Description
Technical field
The invention belongs to technical field of electrolyte, use more particularly to a kind of high-pressure graphite alkenyl aquo-lithium ion capacitor
Electrolyte.
Background technique
Supercapacitor is current very common new energy power supply system, can be used for hybrid power new-energy automobile electricity
A series of fields in source, energy storage variable frequency power source etc., at present its energy storage of the supercapacitor of commercialization and Mechanism of electrochemical behaviors of anhydrous master
Will be based on the adsorption desorption of physics, therefore energy density is extremely low, and can not carry out prolonged energy storage.
The mechanism of lithium-ion capacitor and lithium ion battery is close, and anode generally uses the Carbon Materials of active carbon class, and bears
Extremely generally use the negative electrode material such as graphite, hard carbon etc. of lithium ion battery.Lithium ion shuttles to complete to fill between positive and negative anodes
Discharge process allows the amount of the lithium ion of insertion to pass through cathode since cathode has used the negative electrode material of lithium ion battery
Capacity quantified so that energy density is more for supercapacitor for the energy density of lithium-ion capacitor
Height, and the energy storage of certain time can be carried out.
The one kind for the carbon material that graphene is very popular as current research can have very high specific surface area, lead
Electrical property and heat transfer property, therefore active carbon can be substituted in lithium-ion capacitor, to become lithium-ion capacitor just
Pole material.The lithium-ion capacitor reported in industry at present is organic electrolyte system, this is primarily due to charge and discharge
Negative terminal surface can generate certain Li dendrite due to polarizing in journey, and dendrite encounters water meeting vigorous combustion, heat release or even explosion, therefore
Aqueous electrolyte is once once not regarded as lithium ion battery and capacitor system.And the water that domestic and foreign literature has been reported that
It is capacitor system, but in view of the decomposition voltage of water is lower, therefore operating voltage is generally in 2.0V or less.
Summary of the invention
The present invention is to solve technical problem present in well-known technique and provide a kind of high-pressure graphite alkenyl aquo-lithium ion
Electrolyte for capacitor.
The object of the present invention is to provide one kind to have conductivity high, is stabilized, securely and reliably, it is applied widely the features such as
High-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor.
Graphene-based lithium-ion capacitor steady operation can be achieved in the present invention (1.5-4.2V) in higher voltage range
Aqueous electrolyte.Due to use a part of aqueous solution as the electrolyte system so that the conductivity of electrolyte compared to
Commercially available Organic Electrolyte Solutions for Li-Ion Batteries improves 50% or more, deposits along with electrode can be stablized in the aqueous electrolyte
, therefore also can avoid the generation of safety accident caused by reacting as dendrite lithium with water.
Electrolyte system of the present invention includes two parts:
(1) aqueous electrolyte component
The part is that water and high concentration lithium salts are combined into aqueous electrolyte.The high concentration lithium salts used is sub- for double fluorine sulphonyl
One or more of compoundings of amine lithium, pentafluorophenyl group imide li, difluorophosphate, ratio are 100:10-99:30-99 (quality
Than), the total concentration of salt is 3-20mol/L.
(2) cathode protects component
It is to coat one layer of protective layer with conductive hydrophobic grouping in negative terminal surface that cathode, which protects component, which is solid
State gel electrolyte layer mainly includes conducting electrolyte (double fluorine sulfimide lithiums, pentafluorophenyl group imide li, difluorophosphate
One or more of compoundings, ratio is 100:10-99:30-99 (mass ratio), and the total concentration of salt is 1-3mol/L and carbonic ester
Class organic solvent, polymer monomer.
The carbonate based organic solvent used is the combination with linear chain structure carbonic ester and the carbonic ester of cyclic structure.Its
The carbonic ester of middle linear chain structure is methyl -2,2,2- trifluoroethyl carbonic ester and ethyl -2,2, the group of 2- trifluoroethyl carbonic ester
It closes, a combination thereof ratio is 2:3-8 (mass ratio), and wherein the carbonic ester of cyclic structure is double fluoro EC (F2-EC) and butylene carbonate
Combination a combination thereof ratio of ester is that the ratio of 3:2-7 (mass ratio) linear carbonate and cyclic carbonate is 2:1-3.5 (quality
Than).
Wherein used polymerized monomer acrylonitrile.
Whole cathode protection component each section proportion is lithium salts: 10-20% (mass percent), organic carbonate:
75-85%, acrylonitrile: 5%.
High-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor of the present invention is adopted the technical scheme that:
A kind of high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, its main feature is that: high-pressure graphite alkenyl water system lithium
Ionistor electrolyte includes two parts:
(1) aqueous electrolyte component
Water and lithium salts are combined into aqueous electrolyte, lithium salts is double fluorine sulfimide lithiums, pentafluorophenyl group imide li, difluoro
One or more of compoundings of lithium phosphate, mass ratio 100:10-99:30-99, the total concentration of salt are 3-20mol/L；
(2) cathode protects component
It is to coat one layer of protective layer with conductive hydrophobic grouping in negative terminal surface that cathode, which protects component, which is solid
State gel electrolyte layer, be the double fluorine sulfimide lithium of conducting electrolyte, pentafluorophenyl group imide li, difluorophosphate one kind or
Several compoundings, mass ratio 100:10-99:30-99, the total concentration of salt is 1-3mol/L and carbonate based organic solvent,
Polymer monomer.
High-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor of the present invention can also adopt the following technical scheme that
The high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, its main feature is that: carbonate based organic solvent
For the combination with linear chain structure carbonic ester and cyclic structure carbonic ester, wherein linear chain structure carbonic ester is methyl -2,2,2- tri-
Fluoro ethyl carbonic ester and ethyl -2,2, the combination of 2- trifluoroethyl carbonic ester, a combination thereof mass ratio are 2:3-8, cyclic structure
Carbonic ester is the combination of double fluoro EC and butylene, and a combination thereof mass ratio is 3:2-7, linear chain structure carbonic ester and ring-type
The mass ratio of structure carbonic ester is 2:1-3.5.
The high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, its main feature is that: polymer monomer is propylene
Nitrile.
The high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, its main feature is that: cathode protects constituent mass
Percentage is lithium salts 10-20%, organic carbonate 75-85%, acrylonitrile 5%.
The advantages and positive effects of the present invention are:
High-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor due to using the completely new technical solution of the present invention, with
The prior art is compared, and the present invention has electrolytic conductivity high, is stabilized, securely and reliably, it is applied widely the advantages that.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and it is described in detail
It is as follows:
Embodiment 1
A kind of high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, including two parts: aqueous electrolyte component and
Cathode protects component.
Water system component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li, difluorophosphate mass ratio 100:52:52 are multiple
Match, lithium salts total concentration is 20mol/L.
Cathode protects component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li, difluorophosphate mass ratio 100:52:
52 compoundings.Salt total concentration 1mol/L.
The carbonic ester of linear chain structure is methyl -2,2,2- trifluoroethyl carbonic ester and ethyl -2,2,2- trifluoroethyl carbonic acid
The combination of ester, a combination thereof ratio are 2:7 (mass ratio), and wherein the carbonic ester of cyclic structure is double fluoro EC (F2-EC) and carbonic acid
Combination a combination thereof ratio of butene esters is 3:7 (mass ratio), and the ratio of linear carbonate and cyclic carbonate is 2:1 (mass ratio)
Whole cathode protection component each section proportion is lithium salts: 15% (mass percent), organic carbonate:
80%, polymerized monomer: 5%.
Embodiment 2
A kind of high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, including two parts: aqueous electrolyte component and
Cathode protects component.
Water system component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li mass ratio 100:23 compounding, lithium salts total concentration are
15mol/L。
Cathode protects component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li mass ratio 100:23 compounding.Salt total concentration
3mol/L。
The carbonic ester of linear chain structure is methyl -2,2,2- trifluoroethyl carbonic ester and ethyl -2,2,2- trifluoroethyl carbonic acid
The combination of ester, a combination thereof ratio are 2:5 (mass ratio), and wherein the carbonic ester of cyclic structure is double fluoro EC (F2-EC) and carbonic acid
Combination a combination thereof ratio of butene esters is 3:7 (mass ratio), and the ratio of linear carbonate and cyclic carbonate is 1:1 (mass ratio)
Whole cathode protection component each section proportion is lithium salts: 20% (mass percent), organic carbonate:
75%, polymerized monomer: 5%.
Embodiment 3
A kind of high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, including two parts: aqueous electrolyte component and
Cathode protects component.
Water system component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li mass ratio 100:83 compounding, lithium salts total concentration are
20mol/L。
Cathode protects component: double fluorine sulfimide lithiums, pentafluorophenyl group imide li mass ratio 100:83 compounding.Salt total concentration
3mol/L。
The carbonic ester of linear chain structure is methyl -2,2,2- trifluoroethyl carbonic ester and ethyl -2,2,2- trifluoroethyl carbonic acid
The combination of ester, a combination thereof ratio are 2:3 (mass ratio), and wherein the carbonic ester of cyclic structure is double fluoro EC (F2-EC) and carbonic acid
Combination a combination thereof ratio of butene esters is 3:5 (mass ratio), and the ratio of linear carbonate and cyclic carbonate is 1:1 (mass ratio)
Whole cathode protection component each section proportion is lithium salts: 15% (mass percent), organic carbonate:
80%, polymerized monomer: 5%.
Comparative example 1
Commercially available electrolyte of high power lithium ion battery A.
Comparative example 2
Commercially available electrolyte of high power lithium ion battery B.
1 embodiment of table and comparative example Contrast on effect
| Decomposition voltage/V | Conductivity mS/cm | |
| Embodiment 1 | 7.0 | 21 |
| Embodiment 2 | 6.9 | 15 |
| Embodiment 3 | 6.5 | 16 |
| Comparative example 1 | 5.5 | 8.2 |
| Comparative example 2 | 4.5 | 7.3 |
The present embodiment has the electrolytic conductivity high, is stabilized, securely and reliably, applied widely to wait actively effect
Fruit.
Claims (4)
1. a kind of high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor, it is characterized in that: high-pressure graphite alkenyl water system lithium from
Sub-capacitor electrolyte includes two parts:
(1) aqueous electrolyte component
Water and lithium salts are combined into aqueous electrolyte, lithium salts is double fluorine sulfimide lithiums, pentafluorophenyl group imide li, difluorophosphoric acid
One or more of compoundings of lithium, mass ratio 100:10-99:30-99, the total concentration of salt are 3-20mol/L；
(2) cathode protects component
It is to coat one layer of protective layer with conductive hydrophobic grouping in negative terminal surface that cathode, which protects component, and the protective layer is solidifying for solid-state
Glue electrolyte layer is the double fluorine sulfimide lithiums of conducting electrolyte, the one or more of pentafluorophenyl group imide li, difluorophosphate
Compounding, mass ratio 100:10-99:30-99, the total concentration of salt are 1-3mol/L and carbonate based organic solvent, polymerization
Object monomer.
2. high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor according to claim 1, it is characterized in that: carbonic ester
Class organic solvent is the combination with linear chain structure carbonic ester and cyclic structure carbonic ester, wherein linear chain structure carbonic ester is first
Base -2,2,2- trifluoroethyl carbonic ester and ethyl -2,2, the combination of 2- trifluoroethyl carbonic ester, a combination thereof mass ratio are 2:3-
8, cyclic structure carbonic ester is the combination of double fluoro EC and butylene, and a combination thereof mass ratio is 3:2-7, linear chain structure carbon
The mass ratio of acid esters and cyclic structure carbonic ester is 2:1-3.5.
3. high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor according to claim 1, it is characterized in that: polymer
Monomer is acrylonitrile.
4. high-pressure graphite alkenyl aquo-lithium ion electrolyte for capacitor according to claim 1,2 or 3, it is characterized in that:
It is lithium salts 10-20%, organic carbonate 75-85%, acrylonitrile 5% that cathode, which protects constituent mass percentage,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405250.3A CN109961956A (en) | 2017-12-22 | 2017-12-22 | Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405250.3A CN109961956A (en) | 2017-12-22 | 2017-12-22 | Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109961956A true CN109961956A (en) | 2019-07-02 |
Family
ID=67019344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711405250.3A Pending CN109961956A (en) | 2017-12-22 | 2017-12-22 | Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109961956A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900495A (en) * | 2020-06-12 | 2020-11-06 | 北京大学深圳研究生院 | Water-based electrolyte and application thereof |
| CN112466674A (en) * | 2020-10-29 | 2021-03-09 | 电子科技大学 | Preparation method of high-temperature gel polymer electrolyte lithium ion capacitor |
| CN113764652A (en) * | 2021-10-08 | 2021-12-07 | 南开大学 | Method for protecting metal cathode of water-based battery by hydrophobic organic layer |
| CN115275362A (en) * | 2022-07-29 | 2022-11-01 | 中国地质大学（武汉） | Solid electrolyte containing heterogeneous ionic gel buffer layer and preparation and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247822A (en) * | 2012-02-14 | 2013-08-14 | 中国科学院物理研究所 | Lithium-sulfur secondary battery system |
| CN104638301A (en) * | 2013-11-13 | 2015-05-20 | 浙江省化工研究院有限公司 | High-voltage lithium ion battery electrolyte |
| JP2015133255A (en) * | 2014-01-14 | 2015-07-23 | 旭化成株式会社 | Nonaqueous electrolyte and lithium ion secondary battery |
| CN105811004A (en) * | 2014-12-30 | 2016-07-27 | 浙江蓝天环保高科技股份有限公司 | Gel electrolyte for lithium ion battery |
| CN106298251A (en) * | 2015-05-19 | 2017-01-04 | 中国科学院金属研究所 | A kind of high-energy-density, intelligence ultracapacitor and application thereof |
| CN106876146A (en) * | 2017-03-31 | 2017-06-20 | 中国科学院过程工程研究所 | A kind of high-voltage solid-state lithium-ion capacitor |
| CN107112600A (en) * | 2015-01-14 | 2017-08-29 | 国立大学法人东京大学 | Electrical storage device aqueous electrolyte and the electrical storage device containing the aqueous electrolyte |
-
2017
- 2017-12-22 CN CN201711405250.3A patent/CN109961956A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247822A (en) * | 2012-02-14 | 2013-08-14 | 中国科学院物理研究所 | Lithium-sulfur secondary battery system |
| CN104638301A (en) * | 2013-11-13 | 2015-05-20 | 浙江省化工研究院有限公司 | High-voltage lithium ion battery electrolyte |
| JP2015133255A (en) * | 2014-01-14 | 2015-07-23 | 旭化成株式会社 | Nonaqueous electrolyte and lithium ion secondary battery |
| CN105811004A (en) * | 2014-12-30 | 2016-07-27 | 浙江蓝天环保高科技股份有限公司 | Gel electrolyte for lithium ion battery |
| CN107112600A (en) * | 2015-01-14 | 2017-08-29 | 国立大学法人东京大学 | Electrical storage device aqueous electrolyte and the electrical storage device containing the aqueous electrolyte |
| CN106298251A (en) * | 2015-05-19 | 2017-01-04 | 中国科学院金属研究所 | A kind of high-energy-density, intelligence ultracapacitor and application thereof |
| CN106876146A (en) * | 2017-03-31 | 2017-06-20 | 中国科学院过程工程研究所 | A kind of high-voltage solid-state lithium-ion capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 张进等: "《炭基锂离子电容器的研究进展》", 《储能科学与技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900495A (en) * | 2020-06-12 | 2020-11-06 | 北京大学深圳研究生院 | Water-based electrolyte and application thereof |
| CN112466674A (en) * | 2020-10-29 | 2021-03-09 | 电子科技大学 | Preparation method of high-temperature gel polymer electrolyte lithium ion capacitor |
| CN112466674B (en) * | 2020-10-29 | 2022-03-15 | 电子科技大学 | Preparation method of high-temperature gel polymer electrolyte lithium ion capacitor |
| CN113764652A (en) * | 2021-10-08 | 2021-12-07 | 南开大学 | Method for protecting metal cathode of water-based battery by hydrophobic organic layer |
| CN115275362A (en) * | 2022-07-29 | 2022-11-01 | 中国地质大学（武汉） | Solid electrolyte containing heterogeneous ionic gel buffer layer and preparation and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103078140B (en) | Lithium ion secondary battery and electrolyte thereof | |
| CN105406124B (en) | A kind of electrolyte improving high-temperature lithium ion battery and high voltage capability and its application in lithium ion battery | |
| CN109961956A (en) | Electrolyte for high-voltage graphene-based aqueous lithium ion capacitor | |
| CN104919629A (en) | Lithium ion secondary battery | |
| CN112563570B (en) | Lithium ion battery non-aqueous electrolyte of three-salt system and lithium ion battery | |
| CN104904041A (en) | Reduction of gassing in lithium titanate cells | |
| CN111342028B (en) | Formation method of lithium ion battery with graphite-based cathode | |
| CN104538650A (en) | Modified lithium/carbon fluoride battery | |
| US20120293916A1 (en) | Electrolyte solution for lithium-ion capacitor and lithium-ion capacitor including the same | |
| CN112467209A (en) | High-voltage lithium ion battery with high and low temperature performance | |
| CN111224160B (en) | Electrolyte for lithium ion battery and application thereof | |
| CN103050732B (en) | Lithium titanate-based chemical power supply | |
| CN109873207A (en) | A kind of high security electrolyte and its preparation method and application | |
| CN103928707A (en) | High voltage lithium ion battery functional electrolyte and preparation method and application | |
| CN103633370A (en) | Lithium titanate battery non-water electrolyte and lithium titanate battery | |
| CN105789685A (en) | Lithium ion battery and electrolyte thereof | |
| KR101985789B1 (en) | Method for assembling a hybrid lithium supercapacitor | |
| CN108390098A (en) | A kind of high-voltage lithium-ion battery electrolyte and high-voltage lithium ion batteries | |
| CN108110321A (en) | A kind of lithium battery high-voltage electrolyte | |
| CN105098239A (en) | Graphene lithium ion battery electrolyte | |
| CN104505534A (en) | High voltage electrolyte solution and lithium ion battery containing the same | |
| CN105932325A (en) | Long-storage life lithium ion storage battery | |
| CN106252714A (en) | A kind of lithium ion battery with long charged storage life and preparation method thereof | |
| US20200343581A1 (en) | Electrolyte solution for lithium ion secondary battery, and lithium ion secondary battery | |
| CN114188606B (en) | Electrolyte and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190702 |
|
| WD01 | Invention patent application deemed withdrawn after publication |