A kind of tpu/pcdl composite all-solid polymer electrolyte and preparation method thereof
An all-solid polymer and electrolyte technology, applied in electrolytes, circuits, electrical components, etc., to achieve high ionic conductivity, increase the number of conductive carriers, and improve conductivity.
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Embodiment 1
[0024] The preparation steps of polyurethane elastomer TPU are as follows: add 8.38g 4,4'dicyclohexylethylmethane diisocyanate (HMDI) to a four-neck flask equipped with polytetrafluoroethylene stirring rod, spherical condenser and thermometer After vacuum dehydration, prepare 40g of polyoxypropylene glycol (PPG), stir well, slowly heat up to (80±2)°C, and react at constant temperature for 3h; cool to 50°C in ice water, add 0.97g of 1,4-butanediol and Stir 30g of DMF evenly, then add the metered catalyst, slowly raise the temperature to (60±2)°C and continue the reaction for 1h, cool down to 50°C and discharge, pour it into a mold and place it in an oven at 120°C for aging for 6h.
[0025] The preparation steps of a TPU / PCDL composite all-solid polymer electrolyte are as follows: first, dissolve 3g TPU in 16g DMF and stir at 110°C for 2h, then add 1g PCDL and 1.71g lithium bistrifluoromethanesulfonylimide (LiTFSI) , magnetically stirred at 80°C for 4h. Finally, the above solut...
Embodiment 2
[0027] The preparation of polyurethane elastomer TPU is the same as in Example 1.
[0028] The preparation steps of a TPU / PCDL composite all-solid polymer electrolyte are as follows: first, 2 g of TPU was dissolved in 16 g of DMF and stirred at 110 °C for 2 h, then 2 g of PCDL and 1.71 g of lithium bistrifluoromethanesulfonylimide (LiTFSI ), stirred magnetically at 80°C for 4h. Finally, the above solution is poured into a polytetrafluoroethylene mold and dried at 80°C for 12-36 hours, then transferred to a vacuum drying oven to dry to constant weight, and then transferred to a glove box for 1-4 weeks for use.
Embodiment 3
[0030] The preparation of polyurethane elastomer TPU is the same as in Example 1.
[0031] The preparation steps of a TPU / PCDL composite all-solid polymer electrolyte are as follows: first, 1 g of TPU was dissolved in 16 g of DMF and stirred at 110 ° C for 2 h, then 3 g of PCDL and 1.71 g of lithium bistrifluoromethanesulfonylimide ( LiTFSI), magnetically stirred at 80°C for 4h. Finally, the above solution is poured into a polytetrafluoroethylene mold and dried at 80°C for 12-36 hours, then transferred to a vacuum drying oven to dry to constant weight, and then transferred to a glove box for 1-4 weeks for use.
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