CN109273773A - A kind of preparation method and applications of gel electrolyte - Google Patents
A kind of preparation method and applications of gel electrolyte Download PDFInfo
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- CN109273773A CN109273773A CN201811060127.7A CN201811060127A CN109273773A CN 109273773 A CN109273773 A CN 109273773A CN 201811060127 A CN201811060127 A CN 201811060127A CN 109273773 A CN109273773 A CN 109273773A
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- H01M10/05—Accumulators with non-aqueous electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- H01M2300/0085—Immobilising or gelification of electrolyte
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- 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
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Abstract
The present invention is a kind of preparation method and applications of gel electrolyte.Method includes the following steps: lithium material is added in preset solution, is placed 1 minute~10 days at 0~70 DEG C, then take out lithium material, obtains the lithium material that surface has induced amine compound protective layer；There is the lithium material of induced amine compound protective layer to be submerged into ether electrolyte 0.1~10 day the surface that upper step obtains again, situ-gel electrolyte is obtained, as the gel electrolyte in battery.The method of the present invention is simple, low in cost and practicability and effectiveness.
Description
Technical field
The present invention relates to the preparation method and applications of gel electrolyte, are to be related to a kind of situ-gel more specifically
Electrolyte preparation method and its application in the battery, belong to secondary cell related fields.
Background technique
The new secondary batteries such as lithium ion, sodium-ion battery are in people's production and life using more and more general in recent years
Time, and the battery of gel polymer electrolyte system then meets people about high-energy density, safety and flexible device
It needs.But the preparation method of gel electrolyte is mostly complex at present, the preparation of partial gel needs under certain condition
It could be formed.106532115 A of CN discloses a kind of preparation method of lithium-sulfur cell gel electrolyte, electrolyte, polymerizable list
Molecular organic and initiator need the initiated polymerization under high temperature or ultraviolet light conditions to prepare gel electrolyte, complex process
And energy consumption and increased costs；106654368 A of CN discloses a kind of preparation method of gel electrolyte, and tri- sections of PS-PEO-PS altogether
The blended porous membrane of polymers preparation prepares cross-linked porous film under the action of catalyst and crosslinking agent, after perforated membrane Electolyte-absorptive
It is prepared into gel electrolyte.This method is complicated, and technique is cumbersome；Yonggang Wang etc.
(Angew.Chem.Int.Ed.2017,56) is first configured with A, tri- kinds of solution of B, C, in ultraviolet light after being mixed in a certain ratio
Under the conditions of be prepared for gel electrolyte, this method is complex, and Gelation Conditions are more harsh.Xin-Bo Zhang etc.
(Adv.Mater.2017,29,1700378) needs hot setting during preparing gel electrolyte, Gelation Conditions are also more
Harshness, and energy consumption also will increase.
Summary of the invention
It is an object of the present invention to for the problem present on, provide a kind of preparation method of gel electrolyte and its answer
With.This method passes through the lithium material that preparation surface has induced amine compound protective layer first；Again by obtained lithium material
Material is submerged into ether electrolyte, and electrolyte gelatinizing-in-situ obtains situ-gel electrolyte.The method of the present invention is simple, cost
Cheap and practicability and effectiveness.
The technical scheme is that
A kind of preparation method of gel electrolyte, comprising the following steps:
(1) lithium material is added in preset solution, is placed 1 minute~10 days at 0~70 DEG C, then takes out lithium material,
Obtain the lithium material that surface has induced amine compound protective layer；
Wherein, 0.01~30g lithium material is added in the preset solution of every mL；The lithium material is that pure metal lithium or lithium close
Gold, the group in lithium alloy become lithium and other components, the described other groups one or two for being divided into metallic sodium and potassium；Lithium alloy
The Zhi amount Bai Fen Bi≤0.01% of middle lithium；
It is preferably 1~10g that lithium material amount is added in every mL processing solution, the quality hundred of lithium in the lithium alloy
Dividing than content is preferably 5~95%；
The form of the lithium material is particle, powder, foil, piece, line, item or bulk；
Described is placed as standing, shake, stirring or shaking.
The preset solution is the solution of aminated compounds or aminated compounds；
The solution of the aminated compounds, mass percentage concentration Wei≤0.01% of aminated compounds；The amine
Compound is one or more of monoamine, diamine and polyamine；Solvent is organic solvent.
The mass percentage concentration of aminated compounds in the solution of the aminated compounds is preferably 0.1%~99%.
The organic solvent is esters solvent, ether solvent, hydrocarbon solvent, sulfone class solvent or other solvents.
The esters solvent is dimethyl carbonate, diethyl carbonate, ethylene carbonate or propene carbonate；The ether
Class solvent be glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethyleneglycol dimethyl ether, dioxolanes or
Tetrahydrofuran；The hydrocarbon solvent is normal butane, toluene, dimethylbenzene, methylene chloride or dichloroethanes；The sulfone class solvent
For dimethyl sulfoxide, ethyl dimethyl sulfone or tetramethyl sulfone；Other solvents are acetonitrile, pyridine or all kinds of ionic liquids.
The monoamine is preferably methylamine or ethamine；The diethylamine be preferably ethylenediamine, propane diamine, butanediamine or
Pentanediamine；The polyamine is preferably diethylenetriamine, dipropylenetriamine or triethylene tetramine.
(2) there is the lithium material of induced amine compound protective layer to be submerged into ether electrolyte the surface that upper step obtains
In 0.1~10 day, obtain situ-gel electrolyte；
Wherein, the lithium material that the surface 0.1~50g has induced amine compound protective layer is added in every mL ether electrolyte
Material；The solvent of ether electrolyte is ether solvent；Salt in the ether electrolyte is that contained component is corresponding in lithium material
Metal cation salt；The mass percentage concentration of metal cation salt is 0.01%~40% in ether electrolyte.Described is every
It is preferably 2~20g that mL ether electrolyte, which is added surface to have the lithium material of induced amine compound protective layer, the ether electricity
The mass percentage concentration for solving metal cation salt in liquid is preferably 0.1%~20%；
The ether solvent is glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and tetraethylene glycol
One or more of dimethyl ether.
The metal cation salt is the one or more of the cationic salts of lithium metal, sodium and potassium.
For the metal cation salt when to be a kind of, metal cation salt is lithium salts；When to be a variety of, metal cation
Salt is lithium salts and other salt, and other salt are the one or two of sodium salt or sylvite；
The lithium salts LiPF6、LiBF6、LiCl、LiAlCl、LiSbF6、LiSCN、LiClO4、LiCF3SO3、LiCF3CO2、
LiN(CF3SO2)2、LiAsF6、LiBC4O8、LiN(FSO2)2, LiTFSI or LiOTf；The sodium salt is NaPF6、NaBF6、
NaCl、NaAlCl、NaSbF6、NaSCN、NaClO4、NaCF3SO3、NaCF3CO2、NaN(CF3SO2)2、NaAsF6、NaBC4O8、NaN
(FSO2)2, NaTFSI or NaOTf；The sylvite is KPF6、KBF6、KCl、KAlCl、KSbF6、KSCN、KClO4、KCF3SO3、
KCF3CO2、KN(CF3SO2)2、KAsF6、KBC4O8、KN(FSO2)2, KTFSI or KOTf.
The application of the gel electrolyte, as the gel electrolyte in battery.
The battery is preferably button cell or soft-package battery.
The beneficial effects of the present invention are:
The present invention prepares gel electrolyte using a kind of simple method, is first prepared for surface with induced amido chemical combination
The lithium metal of object protective layer, then there is the lithium material of induced amine compound protective layer to be submerged into ether electricity obtained surface
It solves in liquid, electrolyte gelatinizing-in-situ, obtains situ-gel electrolyte, and be applied to using metal as the various cell bodies of anode
System.Conditions, the electrolyte such as heating or illumination are not needed in gel preparation course can be with gel in-situ, and method is more flexible, application
Also more extensively.Applied in respective metal ion battery, can effective dendrite inhibition growth, improve battery security and length
Cycle performance.In addition, side reaction can be effectively reduced in metal sulphur battery and metal gas battery, cathode is protected, improves electricity
The cycle life in pond.It is illustrated below with reference to embodiment 1, the button lithium-air battery for obtaining situ-gel electrolyte exists
In the cyclic processes of 145 circles, the decaying very little of discharge voltage and charging voltage (Chong electricity electricity Ya≤4.2V, Fang electricity electricity Ya≤
2.5V), it is able to maintain relatively stable, long circulating is had excellent performance, and shows longer cycle life；As in the comparative example 1 of control
Circulation later period (≤100 circle of the button lithium-air battery of general electrolytic liquid in 105 circles), discharge voltage and charging voltage decline
Subtract serious (filling electric electricity pressure≤4.3V, put electric electricity pressure≤2.3V), is not able to maintain stabilization, long circulating performance is poor, causes to recycle the longevity
Life is insufficient.
Detailed description of the invention
Fig. 1 is the optical photograph for the lithium metal that the surface that embodiment 1 obtains has induced amine compound protective layer.
Fig. 2 is the cycle performance curve of the button lithium-air battery for the situ-gel electrolyte that embodiment 1 obtains.
Fig. 3 is the 40th circle charging and discharging curve of the Soft Roll lithium-air battery for the situ-gel electrolyte that embodiment 5 obtains.
Fig. 4 is the cycle performance curve of the button lithium-air battery for the general electrolytic liquid that comparative example 1 obtains.
Specific embodiment
The present invention is described further below with reference to embodiment.
Embodiment 1:
1) metal lithium sheet is placed in preset solution, the two ratio is 1g:1ml, is shaken 2 days under magnetic stirring apparatus, is located
Managing temperature is 25 DEG C, obtains the metal lithium sheet (Fig. 1) that surface has induced amine compound protective layer.Wherein, can be used for anti-
The preset solution answered is the dimethyl carbonate solution comprising diamine ethylenediamine, and wherein the ratio of ethylenediamine is 2%.
2) there is the metal lithium sheet of induced amine compound protective layer to be added in electrolyte above-mentioned surface, the two ratio
Example is 10g:1ml, and after standing 5 days, electrolyte gelatinizing-in-situ obtains situ-gel electrolyte.Wherein, electrolyte is to contain 1M
The tetraethyleneglycol dimethyl ether solution of LiTFSI.
Wherein, with positive electrode manganese dioxide (MnO2, mass percent 50%), conductive agent carbon black (CB, mass percent
40%) it with polyfluortetraethylene of binding element (PTFE, mass percent 10%), is then coated on a current collector, as anode pole piece；
Have the metal lithium sheet of induced amine compound protective layer as cathode pole piece on obtained surface.Gel electricity will be obtained above
Matter is solved as the gel electrolyte in battery, is assembled into lithium-air battery, specially CR2032 button cell.
The cycle performance curve of battery is as shown in Fig. 2, battery in specific capacity is 500mAh g-1, current density 200mAg-1Under conditions of carry out constant current charge-discharge test, without there is apparent voltage attenuation after it have passed through 145 circle long circulatings.
Fig. 1 is the optical photograph for the lithium metal that surface has induced amine compound protective layer.Different from original metal
Lithium piece surface has silvery white metallic luster, and surface is obviously formd to be protected with certain thickness grey amine compound
Layer.
The cycle performance curve of the lithium-air battery for the situ-gel electrolyte that Fig. 2 is.Abscissa represents circulating ring
Number, ordinate represent voltage, and unit is V.As can be seen that obtaining lithium-air battery the following in 145 circles of situ-gel electrolyte
During ring, the decaying very little (Chong electricity electricity Ya≤4.2V, Fang electricity electricity Ya≤2.5V) of discharge voltage and charging voltage is able to maintain
Relatively stable, long circulating is had excellent performance.
Embodiment 2:
1) lithium metal sodium alloy foil is placed in preset solution, the two ratio is 2g:1ml, is stood.Handling the time is 10 points
Clock, treatment temperature are 20 DEG C, obtain the lithium metal sodium alloy foil that surface has induced amine compound protective layer.Wherein, golden
The mass ratio for belonging to lithium in lithium sodium alloy foil is 20%, and the preset solution that can be used for reacting is diamine butanediamine.
2) there is the lithium metal sodium alloy foil of induced amine compound protective layer and electrolyte to assemble sodium above-mentioned surface
Oxygen cell.The two ratio is 8g:1ml, and after battery standing 7 days, electrolyte gelatinizing-in-situ obtains situ-gel electrolyte.Its
In, electrolyte is to contain 0.5M NaClO4Ethylene glycol dimethyl ether solution.Sodium oxygen cell is CR2025 button cell.
Obtained surface has the lithium metal sodium alloy foil of induced amine compound protective layer and embodiment 1 similar.
The cycle performance curve and embodiment 1 of the sodium oxygen cell of obtained situ-gel electrolyte are similar.
Embodiment 3:
1) lithium metal potassium-sodium alloy item is placed in preset solution, the two ratio is 3g:1ml, vibration.Handling the time is 0.5
It, treatment temperature is 30 DEG C, obtains the lithium metal potassium-sodium alloy item that surface has induced amine compound protective layer.Wherein, golden
The mass ratio for belonging to lithium in lithium potassium-sodium alloy item is 70%, and the preset solution that can be used for reacting is that the acetonitrile comprising monoamine diethylamine is molten
Liquid, wherein the ratio of diethylamine is 0.5%.
2) there is the lithium metal potassium-sodium alloy item of induced amine compound protective layer and electrolyte to assemble gold above-mentioned surface
Belong to kalium ion battery.The two ratio is 5g:1ml, and after battery standing 4 days, electrolyte gelatinizing-in-situ obtains situ-gel electrolysis
Matter.Wherein, electrolyte is to contain 0.1M KPF6Diethylene glycol dimethyl ether solution.Metal kalium ion battery is CR2016 button
Formula battery.
It is similar to obtain lithium metal potassium-sodium alloy item and embodiment 1 of the surface with induced amine compound protective layer.
Cycle performance curve and the embodiment 1 for obtaining the metal kalium ion battery of situ-gel electrolyte are similar.
Embodiment 4:
1) lithium metal Na-K alloy piece is placed in preset solution, the two ratio is 4g:1ml, is stood.Handling the time is 10
Minute, treatment temperature is 40 DEG C, obtains the lithium metal Na-K alloy piece that surface has induced amine compound protective layer.Its
In, the mass ratio of lithium is 30% in lithium metal Na-K alloy piece, and the mass ratio of sodium is 20%, and the mass ratio of potassium is 50%.It can use
In the preset solution of reaction be the ethylene glycol dimethyl ether solution comprising polyamine diethylenetriamine, the wherein ratio of diethylenetriamine
It is 40%.
2) there is the lithium metal Na-K alloy piece of induced amine compound protective layer and electrolyte to assemble above-mentioned surface
Metal sodium-ion battery.The two ratio is 4g:1ml, and after battery standing 6 days, electrolyte gelatinizing-in-situ obtains situ-gel electricity
Xie Zhi.Wherein, electrolyte is the triethylene glycol dimethyl ether solution containing 0.01M KTFSI and 0.5M NaOTf.Metal sodium ion
Battery is CR2016 button cell.
It is similar to obtain lithium metal Na-K alloy piece and embodiment 1 of the surface with induced amine compound protective layer.
Cycle performance curve and the embodiment 1 for obtaining the metal sodium-ion battery of situ-gel electrolyte are similar.
Embodiment 5:
1) lithium metal item is placed in preset solution, the two ratio is 4g:1ml, is stirred 1 day under magnetic stirring apparatus, is located
Managing temperature is 20 DEG C, obtains the lithium metal item that surface has induced amine compound protective layer.Wherein, can be used for reacting is pre-
Setting solution is the tetrahydrofuran solution comprising diamine ethylenediamine, and wherein the ratio of ethylenediamine is 5%.
2) there is the lithium metal item of induced amine compound protective layer to be added in electrolyte above-mentioned surface, the two ratio
Example is 6g:1ml, and after standing 5 days, electrolyte gelatinizing-in-situ obtains situ-gel electrolyte.Wherein, electrolyte is to contain 1M
The tetraethyleneglycol dimethyl ether solution of LiTFSI.
Gel electrolyte will be obtained above as the gel electrolyte in battery, be assembled into lithium-air battery, it is specially soft
Packet lithium-air battery.
It is similar to obtain lithium metal item and embodiment 1 of the surface with induced amine compound protective layer.
40th circle charging and discharging curve of the Soft Roll lithium-air battery of situ-gel electrolyte is as shown in Figure 3.Abscissa represents
Specific capacity, unit are mAh g-1, ordinate represents voltage, and unit is V.As can be seen that the lithium air electricity of situ-gel electrolyte
Pond is 1000mAh g in battery capacity-1In the case where be recycled to the 40th circle when, discharge voltage is maintained at 2.5V or more.
Comparative example 1:
1) metal lithium sheet obtains surface and protects without induced amine compound without the processing of 1 step 1 of embodiment
The metal lithium sheet of layer.
2) above-mentioned surface do not had into the metal lithium sheet of induced amine compound protective layer without 1 step 2 of embodiment
Processing.Obtain general electrolytic liquid.Wherein, electrolyte is the tetraethyleneglycol dimethyl ether solution containing 1M LiTFSI.
General electrolytic liquid will be obtained above as the electrolyte in battery, be assembled into lithium-air battery, lithium-air battery is
CR2032 button cell.
The cycle performance curve of battery is as shown in figure 3, there is apparent voltage attenuation after it have passed through 105 circle long circulatings.
The cycle performance curve of the lithium-air battery for the general electrolytic liquid that Fig. 4 is.Abscissa represents circulating ring number, indulges
Coordinate represents voltage, and unit is V.As can be seen that circulation later period of the lithium-air battery of obtained general electrolytic liquid in 105 circles
(≤100 is enclosed), the decaying of discharge voltage and charging voltage is serious (Chong electricity electricity Ya≤4.3V, Fang electricity electricity Ya≤2.3V), cannot
It keeps stablizing, long circulating performance is poor.
Comparative example 2:
1) lithium metal sodium alloy foil obtains surface without induced amido chemical combination without the processing of 2 step 1 of embodiment
The lithium metal sodium alloy foil of object protective layer.Wherein, the mass ratio of lithium is 20% in lithium metal sodium alloy foil.
2) above-mentioned surface is not had into the lithium metal sodium alloy foil of induced amine compound protective layer and electrolyte assembles
Sodium oxygen cell.The two ratio is 8g:1ml, and after battery standing 7 days, gelatinizing-in-situ does not occur for electrolyte, obtains general electrolytic
Liquid.Wherein, electrolyte is to contain 0.5M NaClO4Ethylene glycol dimethyl ether solution.Sodium oxygen cell is CR2025 button cell.
The cycle performance curve of battery is as shown in figure 3, there is apparent voltage attenuation after it have passed through 105 circle long circulatings.
The cycle performance curve and comparative example 1 of the sodium oxygen cell of obtained general electrolytic liquid are similar.
Comparative example 3:
1) lithium metal potassium-sodium alloy item obtains surface without induced amido chemical combination without the processing of 3 step 1 of embodiment
The lithium metal potassium-sodium alloy item of object protective layer.Wherein, the mass ratio of lithium is 70% in lithium metal potassium-sodium alloy item.
2) above-mentioned surface is not had into the lithium metal potassium-sodium alloy item of induced amine compound protective layer and electrolyte assembles
Metal kalium ion battery.The two ratio is 5g:1ml.After battery standing 4 days, gelatinizing-in-situ does not occur for electrolyte, obtains common
Electrolyte.Wherein, electrolyte is to contain 0.1M KPF6Diethylene glycol dimethyl ether solution.Metal kalium ion battery be for
CR2016 button cell.
The cycle performance curve and comparative example 1 of the metal kalium ion battery of obtained general electrolytic liquid are similar.
Comparative example 4:
1) lithium metal Na-K alloy piece obtains surface without induced aminated without the processing of 4 step 1 of embodiment
Close the lithium metal Na-K alloy piece of object protective layer.Wherein, the mass ratio of lithium is 30% in lithium metal Na-K alloy piece, the quality of sodium
Than being 20%, the mass ratio of potassium is 50%.
2) above-mentioned surface is not had to the lithium metal Na-K alloy piece and electrolyte group of induced amine compound protective layer
Fill metal sodium-ion battery.The two ratio is 4g:1ml.After battery standing 6 days, gelatinizing-in-situ does not occur for electrolyte, obtains general
Logical electrolyte.Wherein, electrolyte is the triethylene glycol dimethyl ether solution containing 0.01M KTFSI and 0.5M NaOTf.Metallic sodium
Ion battery is CR2016 button cell.
The cycle performance curve and comparative example 1 of the metal sodium-ion battery of obtained general electrolytic liquid are similar.
Unaccomplished matter of the present invention is well-known technique.
Claims (10)
1. a kind of preparation method of gel electrolyte, it is characterized in that method includes the following steps:
(1) lithium material is added in preset solution, is placed 1 minute~10 days at 0~70 DEG C, then takes out lithium material, obtain
Surface has the lithium material of induced amine compound protective layer；
Wherein, 0.01~30g lithium material is added in the preset solution of every mL；The lithium material is pure metal lithium or lithium alloy, lithium
Group in alloy becomes lithium and other components, the described other groups one or two for being divided into metallic sodium and potassium；Lithium in lithium alloy
Zhi amount Bai Fen Bi≤0.01%；
The preset solution is the solution of aminated compounds or aminated compounds；
The quality hundred of the solution of the aminated compounds, aminated compounds divides Nong Du≤0.01%；The aminated compounds
For one or more of monoamine, diamine and polyamine；Solvent is organic solvent；
The organic solvent is esters solvent, ether solvent, hydrocarbon solvent, sulfone class solvent or other solvents；
(2) there is the lithium material of induced amine compound protective layer to be submerged into ether electrolyte the surface that upper step obtains
0.1~10 day, obtain situ-gel electrolyte；
Wherein, the lithium material that the surface 0.1~50g has induced amine compound protective layer is added in every mL ether electrolyte；Ether
The solvent of base electrolyte is ether solvent；Salt in the ether electrolyte is the corresponding metal of component contained in lithium material
Cationic salts；The mass percentage concentration of metal cation salt is 0.01%~40% in electrolyte；
The metal cation salt is the one or more of the cationic salts of lithium metal, sodium and potassium.
2. the preparation method of gel electrolyte as described in claim 1, it is characterized in that the form of the lithium material be particle,
Powder, foil, piece, line, item or bulk；
Described is placed as standing, shake, stirring or shaking.
3. the preparation method of gel electrolyte as described in claim 1, it is characterized in that the monoamine is methylamine or ethamine；
The diethylamine is ethylenediamine, propane diamine, butanediamine or pentanediamine；The polyamine is diethylenetriamine, two propylene three
Amine or triethylene tetramine.
4. the preparation method of gel electrolyte as described in claim 1, it is characterized in that the esters solvent is carbonic acid diformazan
Ester, diethyl carbonate, ethylene carbonate or propene carbonate；The ether solvent is glycol dimethyl ether, diethylene glycol two
Methyl ether, triethylene glycol dimethyl ether, tetraethyleneglycol dimethyl ether, dioxolanes or tetrahydrofuran；The hydrocarbon solvent be normal butane,
Toluene, dimethylbenzene, methylene chloride or dichloroethanes；The sulfone class solvent is dimethyl sulfoxide, ethyl dimethyl sulfone or tetramethyl
Base sulfone；Other solvents are acetonitrile, pyridine or all kinds of ionic liquids.
5. the preparation method of gel electrolyte as described in claim 1, it is characterized in that the ether solvent in the step (2)
For one or more of glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and tetraethyleneglycol dimethyl ether.
6. the preparation method of gel electrolyte as described in claim 1, it is characterized in that it is one that the metal cation salt, which is worked as,
When kind, metal cation salt is lithium salts；When to be a variety of, metal cation salt is lithium salts and other salt, and other salt are
The one or two of sodium salt or sylvite.
7. the preparation method of gel electrolyte as described in claim 1, it is characterized in that the lithium salts LiPF6、LiBF6、
LiCl、LiAlCl、LiSbF6、LiSCN、LiClO4、LiCF3SO3、LiCF3CO2、LiN(CF3SO2)2、LiAsF6、LiBC4O8、LiN
(FSO2)2, LiTFSI or LiOTf；The sodium salt is NaPF6、NaBF6、NaCl、NaAlCl、NaSbF6、NaSCN、NaClO4、
NaCF3SO3、NaCF3CO2、NaN(CF3SO2)2、NaAsF6、NaBC4O8、NaN(FSO2)2, NaTFSI or NaOTf；The sylvite
For KPF6、KBF6、KCl、KAlCl、KSbF6、KSCN、KClO4、KCF3SO3、KCF3CO2、KN(CF3SO2)2、KAsF6、KBC4O8、KN
(FSO2)2, KTFSI or KOTf.
8. the preparation method of gel electrolyte as described in claim 1, it is characterized in that in step (1), every mL processing
It is 1~10g that lithium material amount is added in solution, and the mass percentage content of lithium is 5~95% in the lithium alloy；Described is pre-
Set the solution that solution is aminated compounds or aminated compounds；The quality of aminated compounds in the solution of the aminated compounds
Percentage is preferably 0.1%~99%；Surface is added with induced aminated in every mL ether electrolyte described in step (2)
The lithium material for closing object protective layer is 2~20g, and the mass percentage concentration of metal cation salt is 0.1% in the ether electrolyte
~20%.
9. the application of gel electrolyte as described in claim 1, it is characterized in that being as the gel electrolyte in battery.
10. the application of gel electrolyte as described in claim 1, it is characterized in that the battery is button cell or Soft Roll electricity
Pond.
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| CN114094176A (en) * | 2021-11-12 | 2022-02-25 | 天津理工大学 | Gel electrolyte diaphragm treatment method |
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