Composite polymer electrolyte composition

一种复合高分子、电解质的技术，应用在复合电解质、固体电解质、非水电解质等方向，能够解决高分子电解质不具有力学强度等问题

Inactive Publication Date: 2007-03-21
PIOTREK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this polymer electrolyte does not have sufficient mechanical strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1-methyl-3-(4-vinylbenzyl)imidazolium bis{trifluoromethyl}sulfonyl)amide Synthesis of [referred to as MVBI.TFSI]

[0056] Dissolve 37.0 g (0.45 mol) of 1-methylimidazole (1-methylimidazole) in 200 ml of 1,1,1-trifluoroethane, and drop in 100 ml of 1,1 over 1 hour while stirring at room temperature. A solution obtained by dissolving 68.7 g (0.45 mol) of p-chloromethylstyrene (p-chloromethylstyrene) in 1-trifluoroethane was further stirred at 65°C for 10 hours to react. Separate the product, wash the product twice with 100 ml of 1,1,1-trichloroethane (1,1,1-trichloroethane) each time, and dry it at 65° C. under 0.1 mm for 2 hours to obtain a light yellow Solid 1-methyl-3-(4-vinylbenzyl)imidazolinmchloride (1-methyl-3-(4-Vinylbenzyl)imidazolinmchloride) [MVBI.Cl for short] 52.8g (50%).

[0057] Next, dissolve potassium bis{(trifluoromethyl)sufonyl}amide (Kaliumbis{(trifluoromethyl)sufonyl}amide) (KTFSI for short) 31.9g (0.1mol) at 70°C in 100ml of water, and dissolve at ...

Embodiment 2

[0059] Synthesis of Polyvinylidene Modified Polymers Containing Carbon-Carbon Double Bonds [abbreviated as DBF]

[0060] In a 300ml three-neck flask with a stirrer, add 15g of polyvinylidene fluoride (Kynar461) and N-methylpyrrolidone-2 (N-methylpyrrolidone-2) [NMP] 85g made by Japan Adofina (Co., Ltd.), Dissolve at 90°C. While stirring at the same temperature, 2.37 g of triethylamine was added dropwise over about 10 minutes. Furthermore, it stirred at the same temperature for 30 minutes and made it react. After cooling, it was added to 300 ml of water with stirring to make it reprecipitate. The precipitated polymer was impregnated and washed with 500 ml of water twice, filtered, and vacuum-dried at 60° C. for 10 hours.

[0061] The recovered polymer was analyzed by NMR spectrum, and it was found that about 8 mol% of double bonds had been introduced.

Embodiment 3

[0063] Dissolve the 1-methyl-3-(4-vinylbenzyl)imidazolium bis{(trifluoromethyl)sulfonyl}amine obtained in Example 1 in 80 g of dimethyl acetoamide [ Abbreviated as MVBI.TFSI] 8.4g and the polyvinylidene fluoride (Polyvinylidene) modified polymer obtained in Example 2 [abbreviated as DBF] 10.0g, 0.17g of benzoyl peroxide solution. 4.0 g of lithium bis{(trifluoromethyl)sulfonyl}amide (LiTFSI for short) was dissolved in this solution to prepare an electrolyte precursor liquid. This solution was coated on a 100 μm polyester film (T-type manufactured by TORAY Japan), heated at 130° C. for 30 minutes with a hot air dryer, and polymerized while drying. The coating film was peeled from the polyester film to obtain a transparent film with a film thickness of 25 μm. The ionic conductivity of this film is 2.1×10 at 20°C -3 S / cm, the tensile strength is 11MPa.

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Abstract

A totally solid polymer electrolyte composition with high ionic conductivity and enhanced mechanical properties. This electrolyte composition is produced by polymerizing a monomer composition comprising a molten quaternary ammonium salt having a polymerizable functional group introduced therein and a charge transfer ion source in the presence of a polymeric reinforcing material. The polymeric reinforcing material can be formed into a composite of polymer blend morphology by dissolving the monomer composition and the reinforcing material in an appropriate organic solvent and polymerizing the solution. Alternatively, the composite can be obtained by impregnating a porous sheet or film as the reinforcing material with the monomer composition and effecting polymerization. An electrolyte for lithium ion battery can be obtained by selecting a lithium salt as the charge transfer ion source; an electrolyte for fuel cell by selecting a proton donor; and an electrolyte for dye sensitized solar cell by selecting a redox ion pair. A polymer electrolyte composition not containing the charge transfer ion source is also useful as an electrolyte for electrolytic capacitor.

Description

technical field [0001] The present invention relates to a hybrid polymer electrolyte composition, and more specifically to a hybrid polymer electrolyte composition disposed between electrodes of electrochemical devices such as lithium ion batteries, fuel cells, dye-sensitized solar cells, and electrolytic capacitors. Background technique [0002] In lithium secondary batteries, nonaqueous electrolytic solutions containing lithium salts are generally used. This solution is prepared in carbonates such as ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate, lactones such as γ-butyrolactone, and ethers such as tetrahydrofuran. Lithium salts are dissolved in aprotic polar solvents such as However, these organic solvents are volatile and flammable, and there are safety problems in overcharging, overdischarging, and short circuit. In addition, the liquid electrolyte is cumbersome to handle when liquid-sealing the battery. Ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/06H01M8/02H01M14/00H01M10/40C08L101/00H01G9/035H01B1/12H01G9/20H01M8/10H01M10/0525H01M10/0565H01M10/36
CPCH01M8/1044Y02E10/542H01M8/1072Y02E60/521H01M10/0525H01M8/1039H01M8/1023H01B1/122H01G9/2009Y02E60/122H01M8/0291H01M2300/0088H01M8/1048H01M2300/0082H01M10/0565H01M8/106H01M8/0289Y02E60/10Y02E60/50Y02P70/50H01B1/12
Inventor 绪方直哉香川博佐田真纪子
Owner PIOTREK
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