Activated gel state lithium ionic cell polymer electrolyte film, preparation and use thereof
A technology of lithium ion battery and electrolyte film, applied in the field of activated gel state lithium ion battery polymer electrolyte film and its preparation, can solve the problem that the electrochemical and interface stability cannot meet the requirements of large-scale application, difficult lithium ion battery, Problems such as poor mechanical properties and interface stability, to achieve the effects of excellent mechanical stability and film formation, simple process, and improved interface stability
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Embodiment 1
[0025] Synthetic method of activated gel state lithium ion battery polymer electrolyte:
[0026] (1) purification to obtain polymer monomer acrylonitrile (AN) and vinyl acetate (VAc) (AN: VAc=7: 3 molar ratio): the monomer AN and VAc used are analytically pure, and the polymerization inhibitor is removed by distillation Hydroquinone, wherein VAc distillation purification is carried out under normal pressure at a temperature of 72°C;
[0027] (2) in N 2 Under the atmosphere, dissolve 0.3% polyvinyl alcohol in mass percentage in 65% deionized water, stir at 500r / min for 10min, and disperse evenly; add 34% polymer monomer and mass The percentage is 0.4% of the crosslinking agent polyvinyl alcohol dimethacrylate, stir well, add the initiator azobisisobutyronitrile (AIBN) of 0.3% by mass at 65 ° C, and obtain a white emulsion after 6 hours of reaction ;
[0028] (3) Filter the white emulsion, wash it with water for 3 times, wash off the unreacted monomer with ethanol with a mass...
Embodiment 2
[0039] (1) purification to obtain polymer monomer acrylonitrile (AN) and vinyl acetate (VAc) (AN: VAc=9: 1 molar ratio): the monomer AN and VAc used are analytically pure, and the polymerization inhibitor is removed by distillation Hydroquinone, wherein VAc distillation purification is carried out under normal pressure at a temperature of 72°C;
[0040] (2) in N 2 Under atmosphere, dissolve 0.4% polyvinyl alcohol in mass percentage in deionized water with 69% mass percentage, stir for 15 min at 400r / min, and disperse evenly, then add 30% polymer monomer and 0.1% Cross-linking agent polyvinyl alcohol dimethacrylate, stir evenly, add 0.5% initiator azobisisobutyronitrile (AIBN) at 60° C.; react to obtain white emulsion after 6 hours;
[0041] (3) Filter the white emulsion, wash it with water for 3 times, and then use ethanol with a mass ratio of 1:1: deionized water and acetone: deionized water to wash away unreacted monomers, and wash the mixture under N at 60 ° C. 2 Purging ...
Embodiment 3
[0046] (1) Purification to obtain polymer monomer acrylonitrile and (AN) vinyl acetate (VAc) (AN: VAc=5: 5 molar ratio): the monomer AN and VAc used are analytically pure, and the polymerization inhibitor is removed by distillation Hydroquinone, wherein VAc distillation purification is carried out under normal pressure at a temperature of 72°C;
[0047] (2) in N 2 Under the atmosphere, dissolve 0.2% polyvinyl alcohol in mass percentage in 64% deionized water, stir at 450r / min for 12min, and disperse evenly; add 35% polymer monomer and mass The percentage is 0.5% of the crosslinking agent dipropylene phthalate, stir evenly, and add the initiator sodium persulfate with a mass percentage of 0.3% at 62 ° C, and react for 8 hours to obtain a white emulsion;
[0048] (3) Filter the white emulsion, wash it with water for 3 times, wash off the unreacted monomer with ethanol with a mass ratio of 1:1: deionized water and acetone with a mass ratio of 1:1: deionized water successively, a...
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