Preparation method for modified graphene oxide-doped solid polymer electrolyte
A solid polymer and graphene technology, applied in circuits, electrical components, secondary batteries, etc., can solve the problems of battery production, transportation and use safety hazards, batteries are easy to catch fire, burn or even explode, and restrict popularization and application. The generation of dendrites, the improvement of chain movement ability, and the effect of improving ion conductivity
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Embodiment approach 1
[0019] (1) Add 0.1g of graphene oxide to 20ml of N,N-dimethylformamide, and disperse it ultrasonically for 30 minutes to form a uniformly dispersed mixed solution of graphene oxide. Measure 10ml of thionyl chloride and add it to the prepared oxide In the graphene mixed solution, react at 70°C for 24 hours under mechanical stirring, then centrifuge, wash and dry;
[0020] (2) Add the sample obtained in step (1) and 2g of polyethylene glycol into 20ml of dimethyl sulfoxide solution, react at 50°C under nitrogen atmosphere for 72 hours, then centrifuge, wash and dry;
[0021] (3) Mix 2.7g of polyethylene oxide and 0.3g of polyvinyl alcohol in the aqueous solution, and stir mechanically at 40°C for 6 hours;
[0022] (4) Add 0.15g of the sample obtained in step (2) to the mixed solution in step (3), stir for 4 hours, then add 0.3g of lithium perchlorate, continue stirring for 5 hours at room temperature, then pour the mixed solution Put it into a polytetrafluoroethylene mold, dry ...
Embodiment approach 2
[0024] Add 0.3g of graphene oxide to 40ml of N,N-dimethylformamide, ultrasonically disperse for 30 minutes to form a uniformly dispersed graphene oxide mixed solution, measure 10ml of thionyl chloride and add it to the prepared graphene oxide to mix In the solution, react at 70°C for 24 hours under mechanical stirring, then centrifuge, wash and dry;
[0025] (2) Add the sample obtained in step (1) and 6g of polyethylene glycol into 20ml of dimethyl sulfoxide solution, react at 50°C under a nitrogen atmosphere for 72 hours, then centrifuge, wash, and dry;
[0026] (3) Mix 2.4g of polyethylene oxide and 0.6g of polyvinyl alcohol in the aqueous solution and stir mechanically at 40°C for 6 hours;
[0027] (4) Add 0.3g of the sample obtained in step (2) to the mixed solution in step (3), stir for 4 hours, then add 0.3g of lithium perchlorate, continue stirring for 5 hours at room temperature, then pour the mixed solution Put it into a polytetrafluoroethylene mold, dry it in a fume...
Embodiment approach 3
[0029] (Add 0.2g graphene oxide to 30ml N, N-dimethylformamide, ultrasonically disperse for 30 minutes to form a uniformly dispersed graphene oxide mixed solution, measure 10ml thionyl chloride and add it to the prepared graphene oxide In the mixed solution, react at 70°C for 24 hours under mechanical stirring, then centrifuge, wash and dry;
[0030] (2) Add the sample obtained in step (1) and 4g of polyethylene glycol into 20ml of dimethyl sulfoxide solution, react at 50°C under nitrogen atmosphere for 72 hours, then centrifuge, wash and dry;
[0031] (3) Mix 2.1g of polyethylene oxide and 0.9g of polyvinyl alcohol in the aqueous solution, and stir mechanically at 40°C for 6 hours;
[0032] (4) Add 0.45g sample obtained in step (2) to the mixed solution in step (3), stir for 4 hours, then add 0.45g lithium perchlorate, continue stirring for 5 hours at room temperature, then pour the mixed solution Put it into a polytetrafluoroethylene mold, dry it in a fume hood for 12 hours...
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