CN112952127A - Thermal battery electrolyte with adjustable temperature and preparation method and application thereof - Google Patents
Thermal battery electrolyte with adjustable temperature and preparation method and application thereof Download PDFInfo
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- CN112952127A CN112952127A CN202110231484.0A CN202110231484A CN112952127A CN 112952127 A CN112952127 A CN 112952127A CN 202110231484 A CN202110231484 A CN 202110231484A CN 112952127 A CN112952127 A CN 112952127A
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229920000642 polymer Polymers 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000005416 organic matter Substances 0.000 claims abstract description 13
- 239000007790 solid phase Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 25
- -1 polyethylene Polymers 0.000 claims description 15
- 239000002033 PVDF binder Substances 0.000 claims description 13
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical group [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 229910000552 LiCF3SO3 Inorganic materials 0.000 claims description 2
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 229910001547 lithium hexafluoroantimonate(V) Inorganic materials 0.000 claims description 2
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 claims description 2
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 claims description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 2
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 2
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 159000000002 lithium salts Chemical class 0.000 claims description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 2
- 159000000003 magnesium salts Chemical class 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000011116 polymethylpentene Substances 0.000 claims description 2
- 229920000306 polymethylpentene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 239000004952 Polyamide Substances 0.000 claims 2
- 229920002647 polyamide Polymers 0.000 claims 2
- 229920000388 Polyphosphate Polymers 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000001205 polyphosphate Substances 0.000 claims 1
- 235000011176 polyphosphates Nutrition 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 230000004913 activation Effects 0.000 abstract description 8
- 239000012071 phase Substances 0.000 abstract description 6
- 230000005518 electrochemistry Effects 0.000 abstract description 2
- 102000004310 Ion Channels Human genes 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 13
- 239000007773 negative electrode material Substances 0.000 description 8
- 238000001994 activation Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 239000005486 organic electrolyte Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000007725 thermal activation Methods 0.000 description 2
- 238000001757 thermogravimetry curve Methods 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
- H01M6/36—Deferred-action cells containing electrolyte and made operational by physical means, e.g. thermal cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
Abstract
The invention belongs to the field of electrochemistry, and particularly relates to a temperature-adjustable thermal battery electrolyte as well as a preparation method and application thereof. The invention discloses a thermal battery electrolyte, which utilizes the phase change of polymers or organic matters to realize the activation of a thermal battery. Before phase change, because a mixed system formed by metal salt and polymer has no ion conductance in a solid phase, no ion channel is arranged in the battery, the battery can not realize discharge, after phase change, the polymer or organic matter is in a molten state, the metal salt is dissolved in the polymer or organic matter to realize internal ion conduction, and the battery is activated to realize normal discharge.
Description
Technical Field
The invention belongs to the field of electrochemistry, and particularly relates to a temperature-adjustable thermal battery electrolyte as well as a preparation method and application thereof.
Background
A thermal (thermally activated) battery is an important reserve battery. The electrolyte is non-conductive solid when stored, and the electrolyte is activated by igniting the heating agent in the electrolyte when in use, so that the electrolyte is melted into an ion conductor. The thermal battery has higher specific energy and specific power, long storage time and normal work in various severe environments, so the thermal battery can be used as a power supply in the fields of missiles, rockets and the like, and has wider application in non-military equipment such as aircraft emergency power supplies and underground high-temperature mine exploration power supplies.
However, the melting point of eutectic salt composed of common halide salt is high, so that the activation temperature and the working temperature of the battery are mostly above 400 ℃, and the high activation temperature and the working temperature bring many adverse effects on the cost, the electrochemical performance and the safety of the battery.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a temperature-adjustable thermal battery electrolyte, and a preparation method and application thereof, and solves the problems of over-high thermal activation temperature and working temperature of a thermal battery in the prior art.
One of the technical solutions adopted to solve the technical problems of the present invention is to provide a temperature-adjustable thermal battery electrolyte: the electrolyte is a mixture consisting of metal salt and polymer or organic matter; the polymer or organic matter is solid at normal temperature and can be converted into liquid phase from solid phase under the heating condition below 300 ℃; the metal salt is soluble in the polymer or organic matter in a molten state.
In a preferred embodiment, the mixture of metal salt and polymer or organic material is in the solid state without ionic conductivity.
In a preferred embodiment, the metal salt is one of a lithium salt, a magnesium salt and a potassium salt.
In a preferred embodiment, the metal salt is LiCl, LiI, LiF, LiBr, LiNO3、LiClO4、LiTFSi、LiDFOB、LiPF6、LiBF4、LiAsF6、KF、KBr、KCl、KNO3、LiSbF6、LiCF3SO3、LiCF3CO2And LiC2F4(SO3)2One kind of (1).
In a preferred embodiment, the polymer is one of PE (polyethylene), PP (polypropylene), polyvinylidene fluoride (PVDF), polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP), polytetrafluoroethylene, polyisobutylene, polyphosphoester, polyvinyl chloride, polyimide poly, polyvinylidene chloride, polyethylene terephthalate (PET), polymethylpentene, polymethyl methacrylate polyvinyl butyral (PVB), Polyurethane (PU), polyethersulfone.
In a preferred embodiment, the organic substance is one of vinyl acetate (EC), paraffin, and phenol.
A temperature-regulated thermal battery comprising the thermal battery electrolyte of any of the above.
The second technical scheme adopted by the invention for solving the technical problems is to provide a preparation method of the thermal battery electrolyte with adjustable temperature, which comprises the following steps:
(1) adding metal salt into molten polymer or organic matter, mixing homogeneously and cooling to obtain mixture containing metal salt;
(2) dissolving the prepared mixture in an organic solvent or heating to a molten state and then placing the mixture in a mold;
(3) removing the solvent from the mixture subjected to the dissolving treatment in the step (2) and then demolding to obtain a solid electrolyte membrane; and (3) performing compression molding on the mixture subjected to heating and melting treatment in the step (2), cooling, and demolding to obtain the electrolyte membrane.
In a preferred embodiment, the mold in the step (2) is a polytetrafluoroethylene mold.
In a preferred embodiment, the compression molding in step (3) is performed at a pressure of 5 to 20 MPa.
The invention has the following beneficial effects:
1. at room temperature, the electrolyte is a solid phase and has no ionic conductance, and the battery can not generate self-discharge, thereby being beneficial to the storage of the battery; after heating, the polymer or organic matter is converted from solid phase to liquid phase, and the metal salt is dissolved in the polymer or organic matter in a molten state, so that internal ion conduction is realized, and the battery is activated to realize normal discharge.
2. The melting point of the polymer can be adjusted by molecular weight, so that the activation temperature of a thermally activated battery consisting of the electrolyte containing the polymer can be continuously adjusted;
3. there are many types of polymers with melting points below 200 ℃, and it is possible to realize lower temperature activation of a thermal battery and operation of the battery below 200 ℃ by exchanging different types of polymers.
Drawings
Fig. 1 is a schematic diagram of a thermal activation mechanism of the electrolyte.
FIG. 2 is a thermogram of PVDF in example 8.
Detailed Description
The present invention will be described in more detail below by way of examples. In the following description of specific embodiments, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the scope of the present invention is not limited by these embodiments.
Example 1
Preparing the temperature-adjustable organic electrolyte of the thermally activated battery: adding LiDFOB into the molten PVDF, uniformly mixing, and cooling to obtain a LiDFOB/PVDF mixture with the concentration of 1 mol/L; adding NMP (N-methyl pyrrolidone) which is a solvent 9 times of the mass of the mixture into the obtained mixture, dissolving the mixture into NMP, pouring the obtained solution into a square polytetrafluoroethylene mold, transferring the mold into a vacuum oven at 80 ℃ to remove the NMP, demolding to obtain an electrolyte membrane, and finally cutting the electrolyte membrane into a size for batteries.
Example 2
Preparing the temperature-adjustable organic electrolyte of the thermally activated battery: adding LiTFSi into the molten PMMA, and uniformly mixing to prepare a LiTFSi/PMMA mixture with the concentration of 1 mol/l; adding acetone with the mass being 9 times of that of the obtained mixture into the obtained mixture, pouring the obtained solution into a square polytetrafluoroethylene mold, transferring the mold into a vacuum oven with the temperature of 80 ℃ to remove the acetone, demolding to obtain an electrolyte membrane, and finally cutting the electrolyte membrane into a size used for a battery.
Example 3
Preparing the temperature-adjustable organic electrolyte of the thermally activated battery: adding LiTFSi into the molten PE, uniformly mixing, and cooling to obtain a LiTFSi/PE mixture with the concentration of 1mol/l for later use; heating the mixture to 200 ℃ and preserving heat to enable the mixture to be molten, pouring the obtained molten mixture into a square polytetrafluoroethylene mold, performing compression molding under the pressure of 10MPa, cooling, demolding to obtain an electrolyte membrane, and finally cutting the electrolyte membrane into a size for batteries.
Example 4
A conductivity test device, in which the electrolyte membrane obtained in example 1 was sandwiched between two steel sheets, was placed in an oven, and the temperature was raised to 180 ℃ at a rate of 5 ℃/min, and the conductivity of the new electrolyte system was tested at different temperatures, with the results shown in table 1. As can be seen from table 1, no conductivity was measured from room temperature to 150 ℃, when the temperature was increased to a temperature higher than the melting point of PVDF, PVDF was transformed from a solid phase to a liquid phase to assume a molten state, and lidpob was dissolved in the molten PVDF to connect ionic conductivity, thereby enabling the conductivity to be measured.
Table 1 conductivity of electrolyte at different temperatures in example 4
| Temperature (. degree.C.) | 25 | 50 | 100 | 150 | 168 | 180 |
| Voltage (V) | 0.020 | 0.020 | 0.020 | 0.020 | 3.37 | 3.37 |
Example 5
A thermally activated battery has a positive electrode made of V2O5The negative electrode material was mainly Li foil, the electrolyte membrane prepared in example 1 was interposed between the positive electrode material and the negative electrode material, the cell was placed in an oven at 5 ℃/min to 200 ℃ and kept warm, and the open circuit voltage of the cell during the temperature rise was recorded with a multimeter, and the results are shown in table 2.
Table 2 example 5 open circuit voltage of heat activated battery at different temperatures
| Temperature (. degree.C.) | 25 | 50 | 100 | 152 | 170 | 180 |
| Voltage (V) | 0.020 | 0.020 | 0.020 | 3.37 | 3.37 | 3.37 |
A thermally activated battery has a positive electrode made of V2O5The negative electrode material was mainly Li foil, the electrolyte membrane prepared in example 2 was interposed between the positive electrode material and the negative electrode material, the cell was placed in an oven and heated up to 200 ℃ at 5 ℃/min, and the open circuit voltage of the cell during the heating was recorded with a multimeter, and the results are shown in table 3.
Table 3 open circuit voltage of heat activated battery at different temperatures in example 6
| Temperature (. degree.C.) | 25 | 50 | 100 | 152 | 170 | 180 |
| Voltage (V) | 0.020 | 0.020 | 0.020 | 3.37 | 3.37 | 3.37 |
Example 7
A thermally activated battery has a positive electrode made of V2O5The negative electrode material was mainly Li foil, the electrolyte membrane obtained in example 3 was interposed between the positive electrode material and the negative electrode material, the cell was placed in an oven to be heated up to 200 ℃ at 5 ℃/min, and the open circuit voltage of the cell during the heating was recorded with a multimeter, with the results shown in table 4.
Table 4 open circuit voltage of heat activated battery at different temperatures in example 7
| Temperature (. degree.C.) | 25 | 50 | 100 | 133 | 170 | 180 |
| Voltage (V) | 0.020 | 0.020 | 0.020 | 3.37 | 3.37 | 3.37 |
As can be seen from tables 2, 3 and 4, the above systems can realize that the normal temperature battery is in an unactivated state and does not display voltage, and the battery is activated above the polymer phase transition temperature and starts to display normal voltage; and different systems have different activation temperatures, and the activation temperature of the electrolyte in the embodiment is below 200 ℃.
Example 8
A thermally activated battery with positive electrode made of FeS2The negative electrode material was mainly li (b) alloy, and the electrolyte membrane obtained in example 1 was interposed between the positive electrode material and the negative electrode material. The cell was placed in an oven at 5 ℃/min to 140 ℃ and the open circuit voltage of the cell during the temperature ramp was recorded with a multimeter.
Example 9
The PVDF used in example 1 was subjected to thermal analysis, and the results are shown in FIG. 2. From the thermogram of fig. 2, it can be seen that the melting point (phase transition temperature) of PVDF is at 159 ℃, which is in a solid state without conducting ions at room temperature, and melts into a liquid state at a temperature higher than the melting point.
Table 5 shows the melting point ranges of several polymers used for dissolving metal salts in the present invention, and the melting points (phase transition temperatures) of different polymers are different, so that the electrolyte system containing the polymer can flexibly adjust the activation temperature and the operating temperature of the battery by changing the kind of the polymer.
TABLE 5 melting Point ranges for different polymers
| Class of polymers | PE | PP | PVDF | PMMA | PA | PET |
| Melting Point (. degree.C.) | 120-136 | 148-176 | 156-170 | 130-140 | 215-260 | 225-260 |
The foregoing is for illustrative purposes only, and therefore the scope of the invention should not be limited by this description, and all modifications made within the scope of the invention and the contents of the description should be considered within the scope of the invention.
Claims (10)
1. A temperature-adjustable thermal cell electrolyte, characterized by: the electrolyte is a mixture consisting of metal salt and polymer or organic matter; the polymer or organic matter is solid at normal temperature and can be converted into liquid phase from solid phase under the heating condition below 300 ℃; the metal salt is soluble in the polymer or organic matter in a molten state.
2. A temperature adjustable thermal cell electrolyte as claimed in claim 1 wherein: the mixture of the metal salt and the polymer or organic substance has no ionic conductivity in the solid state.
3. A temperature adjustable thermal cell electrolyte as claimed in claim 1 wherein: the metal salt is one of lithium salt, magnesium salt and potassium salt.
4. A temperature-regulated thermal cell electrolyte as claimed in claim 1 or 3 whereinIn the following steps: the metal salt is LiCl, LiI, LiF, LiBr, LiNO3、LiClO4、LiTFSi、LiDFOB、LiPF6、LiBF4、LiAsF6、KF、KBr、KCl、KNO3、LiSbF6、LiCF3SO3、LiCF3CO2And LiC2F4(SO3)2One kind of (1).
5. A temperature adjustable thermal cell electrolyte as claimed in claim 1 wherein: the polymer is one of PE (polyethylene), PP (polypropylene), polyvinylidene fluoride (PVDF), Polyamide (PA), polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP), polytetrafluoroethylene, polyisobutylene, polyphosphate, polyvinyl chloride, polyimide poly, polyvinylidene chloride, polyethylene terephthalate (PET), polymethylpentene, polymethyl methacrylate polyvinyl butyral (PVB), Polyurethane (PU) and polyether sulfone.
6. A temperature adjustable thermal cell electrolyte as claimed in claim 1 wherein: the organic matter is one of vinyl acetate (EC), paraffin and phenol.
7. A temperature-regulated thermal battery comprising the thermal battery electrolyte of any one of claims 1 to 6.
8. A method of preparing a temperature regulated thermal battery electrolyte as claimed in any one of claims 1 to 6 wherein: the method comprises the following steps:
(1) dissolving metal salt in molten polymer or organic matter, and cooling to obtain mixture containing metal salt;
(2) dissolving the prepared mixture in an organic solvent or heating to a molten state and then placing the mixture in a mold;
(3) removing the solvent from the mixture subjected to the dissolving treatment in the step (2) and then demolding to obtain a solid electrolyte; and (3) performing compression molding on the mixture subjected to heating and melting treatment in the step (2), cooling, and demolding to obtain the solid electrolyte.
9. The method of claim 8, wherein the step of preparing the temperature adjustable thermal battery electrolyte comprises: the die in the step (2) is a polytetrafluoroethylene die.
10. The method of claim 8, wherein the step of preparing the temperature adjustable thermal battery electrolyte comprises: the pressure of 5-20MPa is adopted for pressing and molding in the step (3).
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| CN202110231484.0A CN112952127A (en) | 2021-03-02 | 2021-03-02 | Thermal battery electrolyte with adjustable temperature and preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878968A (en) * | 2018-06-25 | 2018-11-23 | 江苏大学 | A kind of organic/inorganic composite solid electrolyte based on concave convex rod or wollastonite |
| WO2020143259A1 (en) * | 2019-01-10 | 2020-07-16 | 北京工业大学 | Preparation and application of polycarbonate-based polymer electrolyte |
| CN112054244A (en) * | 2020-08-21 | 2020-12-08 | 昆山宝创新能源科技有限公司 | Composite solid electrolyte and preparation method and application thereof |
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- 2021-03-02 CN CN202110231484.0A patent/CN112952127A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878968A (en) * | 2018-06-25 | 2018-11-23 | 江苏大学 | A kind of organic/inorganic composite solid electrolyte based on concave convex rod or wollastonite |
| WO2020143259A1 (en) * | 2019-01-10 | 2020-07-16 | 北京工业大学 | Preparation and application of polycarbonate-based polymer electrolyte |
| CN112054244A (en) * | 2020-08-21 | 2020-12-08 | 昆山宝创新能源科技有限公司 | Composite solid electrolyte and preparation method and application thereof |
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