CN108598570B - Preparation method of gel polyelectrolyte membrane and application of gel polyelectrolyte membrane in lithium ion battery - Google Patents
Preparation method of gel polyelectrolyte membrane and application of gel polyelectrolyte membrane in lithium ion battery Download PDFInfo
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Abstract
The invention discloses a preparation method of a gel polyelectrolyte membrane, which comprises the following steps: step A, preparing a gel polymer electrolyte precursor solution; b, preparing a gel polymer electrolyte; and C, preparing the gel polyelectrolyte membrane. The advantages are that: the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
Description
Technical Field
The invention relates to the field of design and manufacture of electrolyte materials of lithium ion batteries, relates to a preparation method of a gel polyelectrolyte membrane, and also relates to application of the gel polyelectrolyte membrane in lithium ions.
Background
The liquid electrolyte battery contains a flowable flammable and explosive organic solvent, and has great hidden danger. The solid polymer electrolyte battery is not flammable and explosive, but the solid polymer electrolyte is still difficult to be practically applied at present due to low room temperature conductivity.
The gel polyelectrolyte has jelly-like appearance at normal temperature, can not flow freely, has good mechanical property and space dimension stability, and has good room-temperature ionic conductivity. Therefore, the gel polymer has the advantages of both the liquid electrolyte and the solid electrolyte, and simultaneously avoids the safety problems that the liquid electrolyte is easy to leak or release inflammable steam and the like and the defects that the solid electrolyte has low ionic conductivity and the like.
The preparation method of the gel polymer membrane is mainly a variation of the Bellcore method or the Bellcore method at present. The preparation process includes filming the mixture of polymer, pore forming agent, etc, extracting the pore forming agent with organic solvent, washing out to form pore, heating to dry to eliminate residual organic solvent, and soaking the dried porous membrane in electrolyte to absorb liquid to obtain the gel electrolyte membrane. The principle of the method is that the gel polymer electrolyte is prepared by utilizing the interaction force among molecular chains to form physical crosslinking and then absorbing electrolyte. However, when the temperature is increased or the battery is left for a long time, the electrolyte easily swells or dissolves due to the decrease in the force acting between the molecular chains, and the electrolyte overflows, thereby deteriorating the battery performance. In addition, the method has complex preparation process, low production efficiency, large consumption of organic solvents and energy sources and is not beneficial to large-scale industrial production.
Disclosure of Invention
The purpose of the invention is: aiming at the defects, the preparation method of the gel polyelectrolyte membrane and the application of the gel polyelectrolyte membrane in the lithium ion battery are provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of a gel polyelectrolyte membrane comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: adding 5-40 parts by mass of acrylate or olefin monomer, 0.3-2.4 parts by mass of acrylic acid and ester functional monomer containing carboxyl, hydroxyl, epoxy or amino, 60-95 parts by mass of organic solvent, and 1-4mol of lithium salt per kilogram of organic solvent into a reaction kettle, stirring uniformly, introducing non-oxygen inert gas to discharge oxygen in the reaction kettle and materials, and keeping a certain pressure, heating while stirring, adding 0.05-0.4 parts by mass of initiator when the temperature of the materials in the reaction kettle is raised to 60 ℃, then the temperature is raised to 75-80 ℃ to start timing reaction for 4-10 hours, then 0.02-0.16 mass part of initiator is added for continuous reaction for 2 hours, after the reaction is finished, the temperature is cooled to 35-45 ℃, the material is discharged for standby use, and the viscosity is 400-20000 cps;
and B, preparing a gel polymer electrolyte: adding 3-15 parts by mass of a cross-linking agent and 0.05-1 part by mass of a catalyst into the prepared gel polymer precursor solution, uniformly stirring, and storing for 1-6 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte on a release film I with the thickness of 5-50 micrometers, baking the release film I for 0.5-2 minutes in an oven at the temperature of 50-70 ℃, compounding a release film II with the thickness of 5-50 micrometers, rolling the release film II, and curing the release film II at the temperature of 30-50 ℃ for 24-72 hours to obtain the gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 5-30 micrometers.
The acrylate or olefin monomer comprises one or more of methyl acrylate, methyl methacrylate, ethyl acrylate, butyl acrylate, isooctyl acrylate, decyl acrylate, cyclohexyl acrylate, isobornyl acrylate, acrylonitrile, styrene and vinyl acetate.
The acrylic acid and ester functional monomer containing carboxyl, hydroxyl, epoxy or amino comprises one or more of acrylic acid, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, glycidyl methacrylate and acrylamide.
The organic solvent comprises one or more of ethylene carbonate, methyl ethyl carbonate, propylene carbonate, dimethyl carbonate, gamma-butyrolactone, vinylene carbonate and diethyl carbonate.
The lithium salt is lithium salt containing lithium bistrifluoromethanesulfonylimide (LiTFSI) and lithium tetrafluoroborate (LiBF)4) Lithium perchlorate (LiClO)4) Lithium hexafluoroarsenate (LiAsF)6) Lithium hexafluorophosphate (LiPF)6) Lithium trifluoromethanesulfonate (LiCF)3SO3) Lithium bis (trifluoromethylsulfonyl) imide (LiN (CF3 SO)2)2)、One or more of lithium bis (oxalato) borate (LiBOB).
The initiator comprises one or more of lauroyl peroxide, dibenzoyl peroxide, tert-butyl peroxypivalate, cumene hydroperoxide, azobisisobutyronitrile and azobisisoheptonitrile.
The cross-linking agent comprises one or more of diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI), Toluene Diisocyanate (TDI), isophorone diisocyanate (IPDI), dicyclohexylmethane diisocyanate (HMDI), Lysine Diisocyanate (LDI), an addition product of TDI and trimethylolpropane, an IPDI trimer, biuret polyisocyanate, an HDI trimer, trifunctional aziridine, ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine and trimethylolpropane triglycidyl ether.
The catalyst comprises one or more of stannous octoate, dibutyltin dilaurate, triethylenediamine, triethylamine, N-dimethylbenzylamine, N-dimethylhexadecylamine and N, N-dimethylbutylamine.
The release film I, II is made of Polyethylene (PE), polypropylene (PP) or polyethylene terephthalate (PET), and the difference of the release force between the two is not less than 5gf/25 mm.
The application of the gel polyelectrolyte membrane in the lithium ion battery is characterized in that the prepared gel polyelectrolyte membrane protected by the double-sided release film is torn off, the protective films on the two sides are respectively attached to a positive pole piece and a negative pole piece, and the gel polyelectrolyte membrane is packaged by an aluminum plastic film, pumped, shaped and formed to obtain the gel polyelectrolyte lithium ion battery core.
Compared with the prior art, the invention achieves the technical effects that: the preparation process of the gel polymer electrolyte precursor liquid synthesizes a linear polymer with a side chain belt capable of reacting groups, the linear polymer and a cross-linking agent react under a heating condition to form a chemical bond cross-linked gel polymer, and sufficient chemical cross-linking points ensure that a gel electrolyte membrane has good mechanical strength; the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
Drawings
FIG. 1 is a structure of a gel electrolyte membrane protected by a double-sided release film.
FIG. 2 is a schematic diagram of the reaction mechanism of the linear polymer and the crosslinking agent to form the network polymer.
Detailed Description
The invention is further described with reference to the following figures and examples:
the first embodiment is as follows:
as shown in fig. 1 and 2: the invention discloses a preparation method of a gel polyelectrolyte membrane, which comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: adding 20 parts by mass of ethyl acrylate, 1 part by mass of hydroxyethyl methacrylate, 40 parts by mass of dimethyl carbonate, 40 parts by mass of ethylene carbonate and 5 parts by mass of lithium bistrifluoromethanesulfonylimide (LiTFSI) into a reaction kettle, adding into the reaction kettle, uniformly stirring, introducing argon gas to discharge oxygen in the reaction kettle and materials, keeping a certain pressure, stirring while heating, adding 0.3 part by mass of dibenzoyl peroxide when the temperature of the materials in the reaction kettle is raised to 60 ℃, heating to 75 ℃ to start timing reaction, controlling the temperature of the materials to be 75-80 ℃ to react for 8 hours, then adding 0.1 part by mass of dibenzoyl peroxide to continue the reaction for 2 hours, cooling to 35 ℃ after the reaction is finished, discharging for later use, and keeping the viscosity at 400 cps;
and B, preparing a gel polymer electrolyte: adding 8 parts by mass of dibutyltin dilaurate into the prepared gel polymer precursor liquid, uniformly stirring, and storing for 2 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte 3 on a PET release film I with the thickness of 15 micrometers and the release force of 5gf/25mm, baking for 1 minute by using a 70 ℃ oven, compounding a PET release film II with the thickness of 15 micrometers and the release force of 20gf/25mm, rolling, and curing for 48 hours at 40 ℃ to obtain the gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 10 micrometers.
A gel polyelectrolyte membrane is applied to a lithium ion battery, the prepared gel polyelectrolyte membrane protected by a double-sided release film is torn off, and then is respectively attached to a nickel-cobalt-manganese ternary positive pole piece and a graphite negative pole piece, a battery core is prepared in a lamination mode, and the battery core is packaged by an aluminum plastic film, then is subjected to air suction, shaping and formation, so that the gel polymer lithium ion battery core is obtained.
Compared with the prior art, the invention achieves the technical effects that: the preparation process of the gel polymer electrolyte precursor liquid synthesizes a linear polymer with a side chain belt capable of reacting groups, the linear polymer and a cross-linking agent react under a heating condition to form gel polymer with chemical bond cross-linking, and enough chemical cross-linking points ensure that a gel electrolyte membrane has good mechanical strength; the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
Example two:
as shown in fig. 1 and 2: the invention discloses a preparation method of a gel polyelectrolyte membrane, which comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: adding 10 parts by mass of methyl methacrylate, 10 parts by mass of isooctyl acrylate, 1 part by mass of hydroxyethyl methacrylate, 40 parts by mass of dimethyl carbonate, 40 parts by mass of ethylene carbonate and 3 parts by mass of lithium bistrifluoromethanesulfonylimide (LiTFSI) into a reaction kettle, uniformly stirring, introducing non-oxygen inert gas to discharge oxygen in the reaction kettle and materials, keeping a certain pressure, heating while stirring, adding 0.3 part by mass of azobisisobutyronitrile when the temperature of the materials in the reaction kettle is raised to 60 ℃, heating to 75 ℃ to start timing reaction, controlling the temperature of the materials to be 75-80 ℃ to react for 10 hours, then adding 0.1 part by mass of azobisisobutyronitrile to continue the reaction for 2 hours, cooling to 40 ℃ after the reaction is finished, discharging for later use, and sticking the materials to the viscosity of 1000 cps;
and B, preparing a gel polymer electrolyte: adding 5 parts by mass of isophorone diisocyanate (IPDI) and 0.05 part by mass of stannous octoate into the prepared gel polymer precursor liquid, uniformly stirring, and storing for 4 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte 3 on a PP release film I with the thickness of 30 micrometers and the release force of 20gf/25mm, baking for 1 minute at 70 ℃, compounding a PP release film II with the thickness of 30 micrometers and the release force of 50gf/25mm, rolling, and curing for 36 hours at 40 ℃ to obtain the gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 20 micrometers.
A gel polyelectrolyte membrane is applied to a lithium ion battery, the prepared gel polyelectrolyte membrane protected by a double-sided release film is torn off, and then is respectively attached to a nickel-cobalt-manganese ternary positive pole piece and a graphite negative pole piece, a battery core is prepared in a lamination mode, and the battery core is packaged by an aluminum plastic film, then is subjected to air suction, shaping and formation, so that the gel polymer lithium ion battery core is obtained.
Compared with the prior art, the invention achieves the technical effects that: the preparation process of the gel polymer electrolyte precursor liquid synthesizes a linear polymer with a side chain belt capable of reacting groups, the linear polymer and a cross-linking agent react under a heating condition to form gel polymer with chemical bond cross-linking, and enough chemical cross-linking points ensure that a gel electrolyte membrane has good mechanical strength; the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
Example three:
as shown in fig. 1 and 2: the invention discloses a preparation method of a gel polyelectrolyte membrane, which comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: 30 parts by mass of butyl acrylate, 10 parts by mass of styrene, 2 parts by mass of acrylic acid, 60 parts by mass of diethyl carbonate, and 4 parts by mass of lithium hexafluorophosphate (LiPF)6) Adding the mixture into a reaction kettle, stirring the mixture evenly, introducing non-oxygen inert gas to discharge oxygen in the reaction kettle and materials, keeping a certain pressure, heating the mixture while stirring, adding 0.3 part by mass of azobisisobutyronitrile when the temperature of the materials in the reaction kettle rises to 60 ℃, then heating the mixture to 75 ℃ to start timing reaction, controlling the temperature of the materials to be 75-80 ℃ to react for 6 hours, and then adding 0.1 part by mass of azo bis (isobutyronitrile)The azodiisobutyronitrile continuously reacts for 2 hours, the temperature is cooled to 45 ℃ after the reaction is finished, the material is discharged for standby, and the viscosity is 2000 cps;
and B, preparing a gel polymer electrolyte: adding 5 parts by mass of trifunctional aziridine and 0.05 part by mass of triethylamine into the prepared gel polymer precursor solution, uniformly stirring, and storing for 6 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte 3 on a PP release film I with the thickness of 5 micrometers and the release force of 5gf/25mm, baking for 2 minutes in an oven at 60 ℃, compounding a PP release film II with the thickness of 5 micrometers and the release force of 20gf/25mm, rolling, and curing for 24 hours at 60 ℃ to obtain the gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 30 micrometers.
A gel polyelectrolyte membrane is applied to a lithium ion battery, the prepared gel polyelectrolyte membrane protected by a double-sided release film is torn off, and then is respectively attached to a nickel-cobalt-manganese ternary positive pole piece and a graphite negative pole piece, a battery core is prepared in a lamination mode, and the battery core is packaged by an aluminum plastic film, then is subjected to air suction, shaping and formation, so that the gel polymer lithium ion battery core is obtained.
Compared with the prior art, the invention achieves the technical effects that: the preparation process of the gel polymer electrolyte precursor liquid synthesizes a linear polymer with a side chain belt capable of reacting groups, the linear polymer and a cross-linking agent react under a heating condition to form gel polymer with chemical bond cross-linking, and enough chemical cross-linking points ensure that a gel electrolyte membrane has good mechanical strength; the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
Example four:
as shown in fig. 1 and 2: the invention relates to a preparation method and a preparation method of a gel polyelectrolyte membraneThe method comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: 20 parts by mass of vinyl acetate, 2 parts by mass of acrylamide, 80 parts by mass of ethyl methyl carbonate, and 3 parts by mass of lithium tetrafluoroborate (LiBF)4) Adding the mixture into a reaction kettle, stirring uniformly, introducing nitrogen, replacing oxygen in the reaction kettle and materials with nitrogen, keeping a certain positive pressure, heating while stirring, adding 0.2 part by mass of azobisisobutyronitrile when the temperature of the materials in the reaction kettle is raised to 70 ℃, heating to 75 ℃ to start timing reaction, controlling the temperature of the materials at 75-80 ℃ to react for 10 hours, and then adding 0.1 part by mass of azobisisobutyronitrile to continue the reaction for 2 hours. Cooling to 45 ℃ after the reaction is finished, discharging for later use, wherein the viscosity is 3000 cps;
and B, preparing a gel polymer electrolyte: adding 4 parts by mass of trimethylolpropane triglycidyl ether and 0.1 part by mass of triethylamine into the prepared gel polymer precursor solution, uniformly stirring, and storing for 3 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte 3 on a PP release film I with the thickness of 30 micrometers and the release force of 20gf/25mm, baking for 1.5 minutes in an oven at 70 ℃, compounding a PP release film II with the thickness of 30 micrometers and the release force of 50gf/25mm, rolling, and curing for 72 hours at 40 ℃ to obtain the gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 30 micrometers.
A gel polyelectrolyte membrane is applied to a lithium ion battery, the prepared gel polyelectrolyte membrane protected by a double-sided release film is torn off, and then is respectively attached to a nickel-cobalt-manganese ternary positive pole piece and a graphite negative pole piece, a battery core is prepared in a lamination mode, and the battery core is packaged by an aluminum plastic film, then is subjected to air suction, shaping and formation, so that the gel polymer lithium ion battery core is obtained.
Compared with the prior art, the invention achieves the technical effects that: the preparation process of the gel polymer electrolyte precursor liquid synthesizes a linear polymer with a side chain belt capable of reacting groups, the linear polymer and a cross-linking agent react under a heating condition to form gel polymer with chemical bond cross-linking, and enough chemical cross-linking points ensure that a gel electrolyte membrane has good mechanical strength; the gel electrolyte membrane prepared by the invention has the protection of the release film on the two sides, so that the gel electrolyte membrane is suitable for various processing processes such as die cutting, stripping and the like, and is beneficial to high-efficiency industrial production; the invention makes the gel electrolyte membrane into a membrane, and the prepared battery does not need a diaphragm, and does not need the processes of liquid injection, gel and the like, thereby simplifying the assembly process of the gel polymer electrolyte battery and improving the production efficiency.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The application of the gel polyelectrolyte membrane in the lithium ion battery is characterized in that: the preparation method of the gel polyelectrolyte membrane comprises the following steps: step A, preparation of gel polymer electrolyte precursor liquid: adding 5-40 parts by mass of acrylate or olefin monomer, 0.3-2.4 parts by mass of acrylic acid and ester functional monomer containing carboxyl, hydroxyl, epoxy or amino, 60-95 parts by mass of organic solvent, and 1-4mol of lithium salt per kilogram of organic solvent into a reaction kettle, stirring uniformly, introducing non-oxygen inert gas to discharge oxygen in the reaction kettle and materials, and keeping a certain pressure, heating while stirring, adding 0.05-0.4 parts by mass of initiator when the temperature of the materials in the reaction kettle is raised to 60 ℃, then the temperature is raised to 75-80 ℃ to start timing reaction for 4-10 hours, then 0.02-0.16 mass part of initiator is added for continuous reaction for 2 hours, after the reaction is finished, the temperature is cooled to 35-45 ℃, the material is discharged for standby use, and the viscosity is 400-20000 cps;
and B, preparing a gel polymer electrolyte: adding 3-15 parts by mass of a cross-linking agent and 0.05-1 part by mass of a catalyst into the prepared gel polymer precursor solution, uniformly stirring, and storing for 1-6 hours at the temperature of below 25 ℃ for later use;
step C, preparation of gel polyelectrolyte membrane: coating the prepared polymer electrolyte on a release film I with the thickness of 5-50 micrometers, baking the release film I for 0.5-2 minutes in an oven at the temperature of 50-70 ℃, compounding a release film II with the thickness of 5-50 micrometers, rolling the release film II, and curing the release film II at the temperature of 30-50 ℃ for 24-72 hours to obtain a gel electrolyte membrane protected by the double-sided release film, wherein the thickness of the electrolyte membrane is 5-30 micrometers; and tearing off the release films on the two sides of the prepared gel electrolyte membrane protected by the release films on the two sides, respectively attaching the gel electrolyte membrane to the positive pole piece and the negative pole piece, packaging the gel electrolyte membrane by using an aluminum plastic film, exhausting air, shaping and forming to obtain the gel polymer lithium ion battery core.
2. Use according to claim 1, characterized in that: the acrylate or olefin monomer comprises one or more of methyl acrylate, methyl methacrylate, ethyl acrylate, butyl acrylate, isooctyl acrylate, decyl acrylate, cyclohexyl acrylate, isobornyl acrylate, acrylonitrile, styrene and vinyl acetate.
3. Use according to claim 1, characterized in that: the acrylic acid and ester functional monomer containing carboxyl, hydroxyl, epoxy or amino comprises one or more of acrylic acid, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, glycidyl methacrylate and acrylamide.
4. Use according to claim 1, characterized in that: the organic solvent comprises one or more of ethylene carbonate, methyl ethyl carbonate, propylene carbonate, dimethyl carbonate, gamma-butyrolactone, vinylene carbonate and diethyl carbonate.
5. Use according to claim 1, characterized in that: the lithium salt is one or more of lithium bistrifluoromethanesulfonylimide (LiTFSI), lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium hexafluoroarsenate (LiAsF6), lithium hexafluorophosphate (LiPF6), lithium trifluoromethanesulfonate (LiCF3SO3), lithium bistrifluoromethylsulfonyl imide (LiN (CF3SO2)2) and lithium bistrifluoromethylenesulfonylborate (LiBOB).
6. Use according to claim 1, characterized in that: the initiator comprises one or more of lauroyl peroxide, dibenzoyl peroxide, tert-butyl peroxypivalate, cumene hydroperoxide, azobisisobutyronitrile and azobisisoheptonitrile.
7. Use according to claim 1, characterized in that: the cross-linking agent comprises one or more of diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI), Toluene Diisocyanate (TDI), isophorone diisocyanate (IPDI), dicyclohexylmethane diisocyanate (HMDI), Lysine Diisocyanate (LDI), an addition product of TDI and trimethylolpropane, an IPDI trimer, biuret polyisocyanate, an HDI trimer, trifunctional aziridine, ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine and trimethylolpropane triglycidyl ether.
8. Use according to claim 1, characterized in that: the catalyst comprises one or more of stannous octoate, dibutyltin dilaurate, triethylenediamine, triethylamine, N-dimethylbenzylamine, N-dimethylhexadecylamine and N, N-dimethylbutylamine.
9. Use according to claim 1, characterized in that: the release film I, II is made of Polyethylene (PE), polypropylene (PP) or polyethylene terephthalate (PET), and the difference of the release force between the two is not less than 5gf/25 mm.
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| CN109346648B (en) * | 2018-10-15 | 2021-11-02 | 苏州清陶新能源科技有限公司 | Flame-retardant gel ceramic diaphragm and preparation method thereof |
| KR102449206B1 (en) | 2018-12-21 | 2022-09-28 | 주식회사 엘지에너지솔루션 | A solid electrolyte membrane and a method for manufacturing the same and a an all solid state lithium secondary battery comprising the same |
| DE102020101137A1 (en) * | 2019-02-01 | 2020-08-06 | GM Global Technology Operations LLC | ELECTROLYTE MEMBRANES |
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| TWI760922B (en) * | 2020-11-17 | 2022-04-11 | 國立成功大學 | Electrolyte and fabricating method thereof, and lithium battery |
| CN112838262A (en) * | 2021-01-10 | 2021-05-25 | 中南大学 | Preparation method of polyamide-based gel polymer electrolyte with multi-network structure |
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| KR100412092B1 (en) * | 2001-05-03 | 2003-12-24 | 삼성에스디아이 주식회사 | Polymer electrolyte and lithium battery employing the same |
| CN1232580C (en) * | 2003-12-24 | 2005-12-21 | 中国科学院广州化学研究所 | Colloidal polymer electrolyte for lithium ion cell and its preparing method |
| CN102368564B (en) * | 2011-10-16 | 2013-05-29 | 上海交通大学 | Gel-type polymer electrolyte and preparation method thereof |
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