CN103811803A - Gel polymer electrolyte and preparation method thereof - Google Patents
Gel polymer electrolyte and preparation method thereof Download PDFInfo
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- CN103811803A CN103811803A CN201210447532.0A CN201210447532A CN103811803A CN 103811803 A CN103811803 A CN 103811803A CN 201210447532 A CN201210447532 A CN 201210447532A CN 103811803 A CN103811803 A CN 103811803A
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- 239000005518 polymer electrolyte Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 50
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 50
- 239000004014 plasticizer Substances 0.000 claims abstract description 49
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 29
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims abstract description 21
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims abstract description 20
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 18
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims description 29
- 230000004888 barrier function Effects 0.000 claims description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- 229910052744 lithium Inorganic materials 0.000 claims description 16
- CGDKALWGXBQBHQ-UHFFFAOYSA-N CC=1C(=O)CC(CC1C)(C)C.N#CC#N.N#CC#N Chemical compound CC=1C(=O)CC(CC1C)(C)C.N#CC#N.N#CC#N CGDKALWGXBQBHQ-UHFFFAOYSA-N 0.000 claims description 15
- 150000001412 amines Chemical class 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 abstract description 4
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 4
- 239000008151 electrolyte solution Substances 0.000 abstract 3
- AXRRPFRZKHRKIZ-UHFFFAOYSA-N lithium dicyanoazanide Chemical compound [Li+].N#C[N-]C#N AXRRPFRZKHRKIZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910003002 lithium salt Inorganic materials 0.000 description 22
- 159000000002 lithium salts Chemical class 0.000 description 22
- 239000003990 capacitor Substances 0.000 description 17
- 239000012266 salt solution Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 8
- -1 dicyanogen methyl isophorone amine Chemical class 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000004087 circulation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- H01G11/56—Solid electrolytes, e.g. gels; Additives 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
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a gel polymer electrolyte, which includes polymethyl methacrylate, and an electrolyte solution and an anhydrous chloride adsorbed in the polymethyl methacrylate. Specifically, in the gel polymer electrolyte, the mass content of the polymethyl methacrylate is 10%-25%, the mass content of the electrolyte solution is 70%-85%, and the mass content of the anhydrous chloride 0.1%-5%. The electrolyte solution comprises lithium biscyanoamide and a plasticizer in a mass ratio of 1:7-1:9, and the plasticizer is formed by mixing of ethylene carbonate and dimethyl carbonate. The anhydrous chloride is at least one of anhydrous magnesium chloride and anhydrous calcium chloride. The gel polymer electrolyte can avoid hydrolysis of the biscyanoamide radical. The invention also provides a preparation method of the gel polymer electrolyte.
Description
Technical field
The present invention relates to a kind of gel polymer electrolyte and preparation method thereof.
Background technology
The studied persons of advantage such as gel polymer electrolyte lithium-ion battery is safe because having, nothing is leaked, leakage current is little pay attention to.Gel polymer electrolyte is a kind of novel functional high molecule material, can, simultaneously as barrier film and electrolyte, can make battery thin type, thereby improve the flexibility of battery shape-designing.
Can there is stronger interaction in the carbonyl in polymethyl methacrylate (PMMA) system methacrylic acid unit and the oxygen in carbonates plasticizer, therefore can absorb a large amount of liquid electrolyte solution, and show and the good interface stability of lithium electrode, be applicable to doing electrolyte matrix material, dicyanogen methyl isophorone amine lithium is because fusing point is low, conductivity is very high, to be hopeful one of lithium salts being applicable to northern low temperature environment most, but, PMMA base gel polymer electrolyte containing dicyanogen methyl isophorone amine lithium inevitably can contain impurity (water) in the process of preparation, dicyanogen methyl isophorone amine root is easily hydrolyzed, cause the stability reduction that uses the PMMA base gel polymer electrolyte of dicyanogen methyl isophorone amine lithium to make the double electric layer capacitor of electrolyte.
Summary of the invention
Based on this, be necessary to provide a kind of gel polymer electrolyte that can avoid the hydrolysis of dicyanogen methyl isophorone amine root and preparation method thereof.
A kind of gel polymer electrolyte, comprise polymethyl methacrylate and be adsorbed on electrolyte and the anhydrous chloride in described polymethyl methacrylate, wherein, the quality percentage composition of polymethyl methacrylate described in described gel polymer electrolyte is 10% ~ 25%, the quality percentage composition of described electrolyte is 70% ~ 85%, the quality percentage composition of described anhydrous chloride is 0.1% ~ 5%, described electrolyte comprises dicyanogen methyl isophorone amine lithium and plasticizer, the mass ratio of described dicyanogen methyl isophorone amine lithium and described plasticizer is 1:7 ~ 1:9, described plasticizer is mixed to form by ethylene carbonate and dimethyl carbonate, described anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride.
In an embodiment, the quality percentage composition of described anhydrous chloride is 2% ~ 5% therein.
In an embodiment, the volume ratio of described ethylene carbonate and described dimethyl carbonate is 1:1.5～1:3 therein.
A kind of method for preparing gel polymer electrolyte, comprises the following steps:
Ultrasonic anhydrous chloride being dispersed in formed to mixed liquor in electrolyte, described electrolyte comprises dicyanogen methyl isophorone amine lithium and plasticizer, the mass ratio of described dicyanogen methyl isophorone amine lithium and described plasticizer is 1:8, described plasticizer is mixed to form by ethylene carbonate and dimethyl carbonate, the mass ratio of described anhydrous chloride and described electrolyte is 1:850 ~ 1:14, and described anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride; And
Polymethyl methacrylate microporous barrier is immersed and in described mixed liquor, adsorbs described mixed liquor and obtain gel polymer electrolyte, and the mass ratio of described polymethyl methacrylate microporous barrier and described electrolyte is 1:8.5 ~ 5:14.
In an embodiment, the mass ratio of described anhydrous chloride and described electrolyte is 2:85 ~ 1:14 therein.
In an embodiment, the time of described ultrasonic dispersion is 5 minutes ~ 30 minutes therein.
In an embodiment, the volume ratio of described ethylene carbonate and described dimethyl carbonate is 1:1.5～1:3 therein.
In above-mentioned gel polymer electrolyte, by adding anhydrous chloride, anhydrous magnesium chloride or anhydrous calcium chloride can adsorb free hydrone, thereby suppress the hydrolysis of dicyanogen methyl isophorone amine root, thereby use the stability of double layer capacitor of above-mentioned gel polymer electrolyte better.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for preparing gel polymer electrolyte of an execution mode;
Fig. 2 is the double layer capacitor that uses the gel polymer electrolyte prepared of embodiment 1 and use the ratio electric capacity of double layer capacitor of the gel polymer electrolyte of preparing in comparative example and the graph of a relation of cycle-index.
Embodiment
Below in conjunction with the drawings and specific embodiments, gel polymer electrolyte and preparation method thereof is further illustrated.
The gel polymer electrolyte of one execution mode, comprises polymethyl methacrylate (PMMA), is adsorbed on electrolyte and anhydrous chloride in polymethyl methacrylate.
In gel polymer electrolyte, the quality percentage composition of polymethyl methacrylate is 10% ~ 25%.Preferably, polymethyl methacrylate is polymethyl methacrylate microporous barrier.
In gel polymer electrolyte, the quality percentage composition of electrolyte is 70% ~ 85%.Electrolyte comprises dicyanogen methyl isophorone amine lithium (LiN (CN)
2) and plasticizer.The mass ratio of dicyanogen methyl isophorone amine lithium and plasticizer is 1:7 ~ 1:9.Plasticizer is mixed to form by ethylene carbonate (EC) and dimethyl carbonate (DMC).Preferably, the volume ratio of ethylene carbonate and dimethyl carbonate is 1: 1.5～1:3.
In gel polymer electrolyte, the quality percentage composition of anhydrous chloride is 0.1% ~ 5%, is preferably 2% ~ 5%.Anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride
In above-mentioned gel polymer electrolyte, by adding anhydrous chloride, anhydrous magnesium chloride or anhydrous calcium chloride can adsorb free hydrone, thereby suppress the hydrolysis of dicyanogen methyl isophorone amine root.
Refer to Fig. 1, above-mentioned method for preparing gel polymer electrolyte, comprises the following steps:
Step S110, ultrasonic anhydrous chloride being dispersed in formed to mixed liquor in electrolyte, electrolyte comprises dicyanogen methyl isophorone amine lithium and plasticizer, the mass ratio of dicyanogen methyl isophorone amine lithium and plasticizer is 1:7 ~ 1:9, plasticizer is mixed to form by ethylene carbonate and dimethyl carbonate, the mass ratio of anhydrous chloride and electrolyte is 1:850 ~ 1:14, and anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride.
Preferably, the mass ratio of anhydrous chloride and electrolyte is 2:85 ~ 1:14.
Preferably, the volume ratio of ethylene carbonate and dimethyl carbonate is 1: 1.5～1:3.
Preferably, the time of ultrasonic dispersion is 5 minutes ~ 30 minutes.
Step S120, polymethyl methacrylate microporous barrier is immersed and adsorbs mixed liquor in mixed liquor and obtain gel polymer electrolyte, the mass ratio of polymethyl methacrylate microporous barrier and electrolyte is 1:8.5 ~ 5:14.
In this step, polymethyl methacrylate microporous barrier is immersed in mixed liquor, polymethyl methacrylate microporous barrier absorbs mixed liquor completely.
The time of preferably, polymethyl methacrylate being immersed in mixed liquor is 30 minutes ~ 180 minutes.
Above-mentioned gel polymer electrolyte preparation method is comparatively simple, the gel polymer electrolyte of preparation can avoid corrosive aluminum foil.
It is below specific embodiment.
Embodiment 1
In glove box, ultrasonic 0.5g anhydrous magnesium chloride (ultrasonic 30min) is scattered in 8.5g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN)
2and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 1g is immersed in above-mentioned mixed liquor, after 180min, PMMA microporous barrier adsorbs mixed liquor the PMMA base gel polymer electrolyte that obtains having added anhydrous magnesium chloride completely.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 10%, and the mass percent of lithium salts and plasticizer is 85%, and the mass percent of anhydrous magnesium chloride is 5%.
Embodiment 2
In glove box, ultrasonic 0.4g anhydrous calcium chloride (ultrasonic 25min) is scattered in 8.4g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 1.2g is immersed in above-mentioned mixed liquor, after 150min, taken out, obtained adding the PMMA base gel polymer electrolyte of anhydrous calcium chloride.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 12%, and the mass percent of lithium salts and plasticizer is 84%, and the mass percent of anhydrous calcium chloride is 4%.
Embodiment 3
In glove box, ultrasonic 0.2g anhydrous magnesium chloride (ultrasonic 20min) is scattered in 8.3g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 1.5g is immersed in above-mentioned mixed liquor, after 120min, taken out, obtained adding the PMMA base gel polymer electrolyte of anhydrous magnesium chloride.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 15%, and the mass percent of lithium salts and plasticizer is 83%, and the mass percent of anhydrous magnesium chloride is 2%.
Embodiment 4
In glove box, ultrasonic 0.5g anhydrous calcium chloride (ultrasonic 15min) is scattered in 7g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 2.5g is immersed in above-mentioned mixed liquor, after 90min, taken out, obtained adding the PMMA base gel polymer electrolyte of anhydrous calcium chloride.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 25%, and the mass percent of lithium salts and plasticizer is 70%, and the mass percent of anhydrous calcium chloride is 5%.
Embodiment 5
In glove box, ultrasonic 0.1g anhydrous magnesium chloride (ultrasonic 10min) is scattered in 7.9g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 2.0g is immersed in above-mentioned mixed liquor, after 60min, taken out, obtained adding the PMMA base gel polymer electrolyte of anhydrous magnesium chloride.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 20%, and the mass percent of lithium salts and plasticizer is 79%, and the mass percent of anhydrous magnesium chloride is 1%.
Embodiment 6
In glove box, ultrasonic 0.01g anhydrous calcium chloride (ultrasonic 5min) is scattered in 7.49g lithium salt solution and forms mixed liquor, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, then PMMA microporous barrier dried 2.5g is immersed in above-mentioned mixed liquor, after 30min, taken out, obtained adding the PMMA base gel polymer electrolyte of anhydrous calcium chloride.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 25%, and the mass percent of lithium salts and plasticizer is 74.9%, and the mass percent of anhydrous calcium chloride is 0.1%.
Comparative example
In glove box, PMMA microporous barrier dried 1.5g is immersed in 8.5g lithium salt solution, wherein lithium salt solution comprises LiN(CN) 2 and plasticizer, LiN(CN) 2 with the mass ratio of plasticizer be 1:8, plasticizer is mixed to form take volume ratio as 1:2 by EC and DMC, after 180min, taken out, obtained PMMA base gel polymer electrolyte.In the gel polymer electrolyte obtaining, the mass percent of PMMA matrix is 15%, and the mass percent of lithium salts and plasticizer is 85%.
In the present invention, the stability of double electric layer capacitor is with representing than electric capacity conservation rate after 200 circulations of constant current charge-discharge.Its test is specially: double layer capacitor is using active carbon as electrode material, the gel polymer electrolyte electrolyte of preparing with each embodiment, utilize CHI660A electrochemical workstation to carry out constant current charge-discharge test to double layer capacitor, record it than electric capacity conservation rate, under 30 degrees celsius, in 0-2v window ranges, with the ratio electric capacity after 200 circulations of constant current repeated charge of 1A/g with first charge-discharge than the ratio of electric capacity.
Gel polymer electrolyte prepared by embodiment 1 ~ 6 and comparative example is applied in double layer capacitor, the ratio electric capacity of the double layer capacitor of gel polymer electrolyte prepared by use embodiment 1 and comparative example and the relation test of cycle-index the results are shown in Figure 2, and the stability test of the double layer capacitor of gel polymer electrolyte prepared by use embodiment 1 ~ 6 and comparative example the results are shown in Table 1.
As can be seen from Figure 2, the first charge-discharge of the double layer capacitor of gel polymer electrolyte prepared by use embodiment 1 is 70.0F/g than electric capacity, and the ratio electric capacity circulating after 200 times is 57.0F/g, and its conservation rate is 81.4%; And the first charge-discharge of the double layer capacitor of gel polymer electrolyte prepared by use comparative example is 70.7F/g than electric capacity, the ratio electric capacity circulating after 200 times is 45.9F/g, and its conservation rate is 64.9%; Use the gel polymer electrolyte prepared of embodiment 1 double layer capacitor than electric capacity conservation rate than the double layer capacitor of the gel polymer electrolyte that uses comparative example to prepare exceeded 16.5% than electric capacity conservation rate, the good stability of the double layer capacitor that uses the gel polymer electrolyte that the double layer capacitor of gel polymer electrolyte prepared by embodiment 1 prepared than use comparative example be described.
Table 1
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 | Comparative example |
| Than electric capacity conservation rate | 81.4% | 80.6% | 78.1% | 76.3% | 71.8% | 67.2% | 64.9% |
As can be seen from Table 1, add anhydrous chloride and can greatly improve use containing LiN (CN)
2pMMA base gel polymer electrolyte make the stability of the double electric layer capacitor of electrolyte.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a gel polymer electrolyte, it is characterized in that, comprise polymethyl methacrylate and be adsorbed on electrolyte and the anhydrous chloride in described polymethyl methacrylate, wherein, the quality percentage composition of polymethyl methacrylate described in described gel polymer electrolyte is 10% ~ 25%, the quality percentage composition of described electrolyte is 70% ~ 85%, the quality percentage composition of described anhydrous chloride is 0.1% ~ 5%, described electrolyte comprises dicyanogen methyl isophorone amine lithium and plasticizer, the mass ratio of described dicyanogen methyl isophorone amine lithium and described plasticizer is 1:7 ~ 1:9, described plasticizer is mixed to form by ethylene carbonate and dimethyl carbonate, described anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride.
2. gel polymer electrolyte according to claim 1, is characterized in that, the quality percentage composition of described anhydrous chloride is 2% ~ 5%.
3. gel polymer electrolyte according to claim 1, is characterized in that, the volume ratio of described ethylene carbonate and described dimethyl carbonate is 1: 1.5～1:3.
4. a method of preparing gel polymer electrolyte, is characterized in that, comprises the following steps:
Ultrasonic anhydrous chloride being dispersed in formed to mixed liquor in electrolyte, described electrolyte comprises dicyanogen methyl isophorone amine lithium and plasticizer, the mass ratio of described dicyanogen methyl isophorone amine lithium and described plasticizer is 1:7 ~ 1:9, described plasticizer is mixed to form by ethylene carbonate and dimethyl carbonate, the mass ratio of described anhydrous chloride and described electrolyte is 1:850 ~ 1:14, and described anhydrous chloride is selected from least one in anhydrous magnesium chloride and anhydrous calcium chloride; And
Polymethyl methacrylate microporous barrier is immersed and in described mixed liquor, adsorbs described mixed liquor and obtain gel polymer electrolyte, and the mass ratio of described polymethyl methacrylate microporous barrier and described electrolyte is 1:8.5 ~ 5:14.
5. method for preparing gel polymer electrolyte according to claim 4, is characterized in that, the mass ratio of described anhydrous chloride and described electrolyte is 2:85 ~ 1:14.
6. method for preparing gel polymer electrolyte according to claim 4, is characterized in that, the time of described ultrasonic dispersion is 5 minutes ~ 30 minutes.
7. method for preparing gel polymer electrolyte according to claim 4, is characterized in that, the volume ratio of described ethylene carbonate and described dimethyl carbonate is 1:1.5～1:3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616697A (en) * | 2018-11-01 | 2019-04-12 | 深圳清华大学研究院 | Magnesium ion battery polymer dielectric film and preparation method thereof |
| CN112421106A (en) * | 2020-11-23 | 2021-02-26 | 浙江锋锂新能源科技有限公司 | Composite film capable of prolonging cycle life of lithium battery and preparation method thereof |
-
2012
- 2012-11-09 CN CN201210447532.0A patent/CN103811803A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616697A (en) * | 2018-11-01 | 2019-04-12 | 深圳清华大学研究院 | Magnesium ion battery polymer dielectric film and preparation method thereof |
| CN112421106A (en) * | 2020-11-23 | 2021-02-26 | 浙江锋锂新能源科技有限公司 | Composite film capable of prolonging cycle life of lithium battery and preparation method thereof |
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Application publication date: 20140521 |