Polymer single-ion electrolyte and preparation method thereof
A polymer and electrolyte technology, applied in circuits, electrical components, secondary batteries, etc., can solve the problems of low room temperature conductivity, poor mechanical strength and film-forming performance, cumbersome synthesis steps, etc., and achieve high room temperature conductivity, mechanical Good strength and film-forming performance, high lithium ion transfer number effect
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[0032] Example 1-10 is the preparation of polymer single ion electrolyte
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[0033] Example 1: Preparation of (p-ethylene benzene sulfonyl) (fluorosulfonyl) lithium imide (LiSFSI) and methoxy triethylene glycol acrylate (MPEGA, n=3) copolymer (electrolyte 1)
[0034] Add 1.32g (5.0mmol) (p-vinylbenzenesulfonyl) (fluorosulfonyl) lithium imide (LiSFSI) monomer and 1.09g (5.0mmol) of methoxy triglycidyl acrylic acid to a 25mL reaction flask Ester (MPEGA, n=3), 0.0042 g (0.025 mmol) azobisisobutyronitrile (AIBN) and 2.5 mL dry DMF. Argon gas was used to expel oxygen for 2h, and reacted at 50℃ for 8h. After the reaction is completed, cool to room temperature. Under stirring, slowly drip the reaction solution into the excess ether to precipitate a viscous solid. Pour out the upper ether slowly, and repeat the dissolution and precipitation three times. A gel-like polymer solid is obtained; the viscous polymer is vacuum dried at 80° C. for 8 hours to obtain 1.6 g of a random copolymer (electrolyte 1). Through nuclear magnetic characterization, the actual ethyle...
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[0036] Example 2: (p-ethylene benzene sulfonyl) (trifluoromethyl sulfonyl) lithium imide (LiSTFSI) and methoxy octaethylene ethylene acrylate (MPEGA, n=8) copolymer (electrolyte 2) preparation
[0037] Add 1.32g (4.1mmol) (p-vinylbenzenesulfonyl) (trifluoromethylsulfonyl) lithium imide (LiSTFSI) monomer and 1.80g (3.7mmol) of methoxy octaacetate to a 25mL reaction flask Diol (400) acrylate (MPEGA, n=8), 0.013 g (0.08 mmol) azobisisobutyronitrile (AIBN) and 5 mL dry DMF. Argon gas was used to expel oxygen for 2h, and reacted at 60℃ for 15h. After the reaction is completed, cool to room temperature. Under stirring, slowly drip the reaction solution into the excess ether to precipitate a viscous solid. Pour out the upper ether slowly, and repeat the dissolution and precipitation three times. A gel-like polymer solid was obtained; the viscose polymer was vacuum dried at 80° C. for 8 hours to obtain 42 g of random copolymer (electrolyte 2).
[0038] Dissolve 42 g of random copolymer ...
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