A method for preparing composite polymer electrolyte film by doping
A technology of composite polymer and electrolyte film, which is applied in the direction of solid electrolyte, non-aqueous electrolyte, battery, etc., can solve the problem that the performance of composite polymer electrolyte is greatly affected, and achieve good mechanical properties, improve ionic conductivity, and large specific surface area Effect
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Embodiment 1
[0028] (1) Mix 1g of graphite powder, 5g of potassium permanganate, 1g of sodium nitrate, and 70ml of concentrated sulfuric acid in a reaction kettle to prepare a 1g / ml solution, react at -5°C for 3 hours, and at 120°C for 3 hours, then take out Wash and centrifuge with deionized water, and then vacuum-dry at room temperature for 24 hours to obtain graphene oxide. Weigh 0.5g of graphene oxide and disperse it in a mixed solution of 40ml of thionyl chloride and 10ml of N,N-dimethylformamide. After being uniformly dispersed by ultrasound, react at 60°C for 30 hours under the protection of nitrogen, wash and centrifuge with tetrahydrofuran, and Dry at 100°C under pressure for 8 hours to obtain acid-chlorinated graphene oxide.
[0029] (2) 8g polyacrylic acid and 0.124g boric acid that the molecular weight is 2000 are mixed in aqueous solution, control total substance mass concentration to be 0.1g / ml, heat up 80 ℃, react for 5 hours, make the solution of polyacrylic acid borate, it...
Embodiment 2
[0037] (1) Mix 1g of graphite powder, 5g of potassium permanganate, 1g of sodium nitrate, and 46ml of concentrated sulfuric acid in a reaction kettle to prepare a 0.15g / ml solution, react at 0°C for 5 hours, and react at 100°C for 5 hours, then take out Wash and centrifuge with deionized water, and then vacuum-dry at room temperature for 48 hours to obtain graphene oxide. Weigh 0.5g of graphene oxide and disperse it in 40ml of thionyl chloride and 10ml of N,N-dimethylformamide mixed solution, after ultrasonic dispersion, react at 80°C for 20 hours under the protection of nitrogen, wash with tetrahydrofuran and centrifuge, often Dry at 80°C under pressure for 12 hours to obtain acid-chlorinated graphene oxide.
[0038] (2) 20g polyacrylic acid and 0.124g boric acid that molecular weight is 5000 are mixed in aqueous solution, control total substance mass concentration to be 0.1g / ml, heat up 80 ℃, react for 7 hours, make the solution of polyacrylic acid borate, its Blast drying ...
Embodiment 3
[0042] (1) Put 1g of graphite powder, 5g of potassium permanganate, 1g of sodium nitrate, and 56ml of concentrated sulfuric acid in a reaction kettle to prepare a 0.125g / ml solution, react at -2°C for 4 hours, and react at 110°C for 4 hours, take it out and use it Wash and centrifuge with deionized water, and then vacuum-dry at room temperature for 48 hours to obtain graphene oxide. Weigh 0.5g of graphene oxide and disperse it in a mixed solution of 40ml of thionyl chloride and 10ml of N,N-dimethylformamide. After being uniformly dispersed by ultrasound, react at 70°C for 24 hours under the protection of nitrogen, wash and centrifuge with tetrahydrofuran, and Dry at 90°C for 10 hours under reduced pressure to obtain acid-chlorinated graphene oxide.
[0043] (2) 12g polyacrylic acid and 0.124g boric acid that molecular weight is 3000 are mixed in aqueous solution, control total substance mass concentration to be 0.5g / ml, heat up 80 ℃, react for 6 hours, make the solution of pol...
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