A proton exchange membrane with high proton conductivity suitable for medium and low temperature environments and its preparation method
A technology of proton exchange membrane and proton conductivity, which is applied in the direction of circuits, fuel cells, electrical components, etc., can solve the problems of little research on proton exchange membranes, achieve high industrial promotion value, good alcohol resistance performance, and simple film forming process controllable effect
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example 1
[0031] A proton exchange membrane with high proton conductivity suitable for medium and low temperature environments is prepared. The specific steps are: put 4g of sulfonated polyetheretherketone powder into 100ml of 99% concentrated sulfuric acid, and stir and react at room temperature for 8 days. After the reaction was completed, the reaction liquid was poured into ice water, the precipitated solid was washed with water until the pH value reached 7, and finally dried to obtain SPEEK, whose sulfonation degree was measured to be 75-80%, which was ready for use. Then soak the SPEEK with a sulfonation degree of about 75-80% in 10ml, 1mol / L sodium hydroxide solution for 2 days, take it out, wash it with water until neutral, put it in an oven to dry, and set it aside. Weigh 4g of the dried SPEEK (75-80% degree of sulfonation) into a three-necked flask containing dimethylsulfoxide (DMSO), then add 0.2g of reducing agent NaBH4, and heat up to 120°C for 4-8h , and then pour the react...
example 2
[0033] Prepare a proton exchange membrane with high proton conductivity suitable for medium and low temperature environments. The specific steps are: put 4g of sulfonated polyetheretherketone powder into 100ml of 99% concentrated sulfuric acid, and stir and react at room temperature for 3 and 8 days respectively . After the reaction, the reaction solution was poured into ice water, and the precipitated solid was washed with water until the pH value reached 7, and finally dried to obtain SPEEK, whose sulfonation degrees were measured to be 30-35% and 75-80%, respectively, for use. Then soak SPEEK with a sulfonation degree of about 75-80% in 10ml, 1mol / L sodium hydroxide solution for 2 days, take it out, wash it with water until neutral, put it into an oven to dry, and set it aside. Weigh 4g of the dried SPEEK (75-80% degree of sulfonation) into a three-necked flask containing dimethylsulfoxide (DMSO), then add 0.2g of reducing agent NaBH4, and heat up to 120°C for 4-8h , and t...
example 3
[0035]Prepare a proton exchange membrane with high proton conductivity suitable for medium and low temperature environments. The specific steps are: put 4g of sulfonated polyether ether ketone powder into 100ml of 99% concentrated sulfuric acid, and stir and react at room temperature for 7 and 8 days respectively . After the reaction, the reaction solution was poured into ice water, the precipitated solid was washed with water until the pH value reached 7, and finally dried to obtain SPEEK, whose sulfonation degrees were measured to be 60-65% and 75-80%, respectively, for use. Then soak SPEEK with a sulfonation degree of about 75-80% in 10ml, 1mol / L sodium hydroxide solution for 2 days, take it out, wash it with water until neutral, put it into an oven to dry, and set it aside. Weigh 4g of the dried SPEEK (75-80% degree of sulfonation) into a three-necked flask containing dimethylsulfoxide (DMSO), then add 0.2g of reducing agent NaBH4, and heat up to 120°C for 4-8h , and then...
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