Nano-level zirconium-salt dispersion modified polyphenyl ether composite proton exchanging film material

[0037] 0.49g modified polyphenylene ether (R 1 , R 2 = SO 3 Na) was dissolved in 5.2mL N,N-dimethylacetamide to form a 10wt% solution, and 0.30g imidazole was added (the weight ratio of imidazole and modified polyphenylene ether was 40:60), and ultrasonication was performed at a frequency of 40kHz Vibrate for 2 hours, pour it on a clean plane (7cm×7cm), cast with a scraper, place the casting solution in a container under high-purity nitrogen flow for 24 hours, and then vacuum dry for 48 hours; then soak in 24wt% zirconium oxychloride solution 4 hours, take out and rinse, then put in 10wt% phosphoric acid solution for 12 hours, rinse and dry, place in a hydrochloric acid solution with a volume ratio of 1 / 11 to convert to proton form, wash in deionized water to remove excess acid, and dry , to obtain light yellow, translucent modified polyphenylene ether-imidazole-zirconium phosphate composite proton exchange membrane material, the thickness of the membrane is 115 μm, and the p

[0039] 0.40g modified polyphenylene ether (R 1 =H + , R 2 =SO 3 H) Dissolve in 4.2mL N,N-dimethylformamide to form a 10wt% solution, add 0.133g imidazole (the weight ratio of imidazole and modified polyphenylene ether is 25:75), and sonicate at a frequency of 20kHz Vibrate for 1 hour, pour it on a clean plane (5cm×5cm), cast it with a scraper, place the casting solution in a container under high-purity nitrogen flow for 12 hours, and then vacuum-dry it for 36 hours; then soak it in 15wt% zirconium oxychloride solution 10 hours, take out and rinse, then put into 10wt% phosphoric acid solution for 24 hours, rinse and dry to obtain the modified polyphenylene ether-imidazole composite proton exchange membrane material dispersed in light yellow and translucent nano-scale zirconium phosphate. The thickness is 106 μm, and at 160°C and 15% relative humidity, the proton conductivity is 2.40×10 -2 S / cm. Fig. 2 is the scanning electron micrograph of the modified polyphenylene ether-i

[0041] 0.31g modified polyphenylene ether (R 1 =H + , R 2 =SO 2 N(CH 3 ) 2 ) was dissolved in 6.4mL N,N-dimethylformamide to form a 5wt% solution, and 0.31g benzimidazole was added (the weight ratio of benzimidazole and modified polyphenylene ether was 50:50), and the frequency Ultrasonic vibration at 40kHz for 5 hours, poured on a clean plane (7cm × 7cm), cast with a scraper, placed the casting solution in a container under a high-purity nitrogen stream for 12 hours, and then vacuum-dried for 36 hours; then soaked in 6wt% chlorine Zirconia solution for 6 hours, take out and rinse, then put in 23wt% phosphoric acid solution for 12 hours, rinse and dry, place in hydrochloric acid solution with a volume ratio of 1 / 10 to convert to proton form, wash in deionized water to remove excess acid, and dried to obtain a modified polyphenylene ether-benzimidazole composite proton exchange membrane dispersed in light yellow and translucent nano-sized zirconium phosphate. The thickness