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
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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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