▎ 摘　　要

NOVELTY - Copolymer material of high sulfonated polyether ether ketone and graphene oxide is the sulfonated poly (ether ether ketone) grafted on the graphene oxide to obtain a polymeric block (I). The copolymer is used for graphene oxide-g-sulfonated poly (ether ether ketone)/s-polybenzimidazole-3, graphene oxide-g-sulfonated poly (ether ether ketone)/s-polybenzimidazole-8, graphene oxide-g-sulfonated poly (ether ether ketone)/Nafion (RTM: perfluorinated resin)10, graphene oxide-g-sulfonated poly (ether ether ketone)/Nafion-33 series proton exchange membrane. USE - Copolymer material of high sulfonated polyether ether ketone and graphene oxide used for proton exchange film applied to fuel battery. ADVANTAGE - The copolymer material of high sulfonated polyether ether ketone and graphene oxide has excellent proton conductivity. DETAILED DESCRIPTION - Copolymer material of high sulfonated polyether ether ketone and graphene oxide is the sulfonated poly (ether ether ketone) grafted on the graphene oxide to obtain a polymeric block of formula (I). The copolymer is used for graphene oxide-g-sulfonated poly (ether ether ketone)/s-polybenzimidazole-3, graphene oxide-g-sulfonated poly (ether ether ketone)/s-polybenzimidazole-8, graphene oxide-g-sulfonated poly (ether ether ketone)/Nafion (RTM: perfluorinated resin)10, graphene oxide-g-sulfonated poly (ether ether ketone)/Nafion-33 series proton exchange membrane. An INDEPENDENT CLAIM is included for a method for preparing copolymer material of high sulfonated polyether ether ketone and graphene oxide, which involves: (A) dissolving 4.0 g polyetheretherketone in 100ml concentrated sulfuric acid (95- 98 %); (B) stirring the mixture vigorously for 3 hours at 70 degrees C; (C) adding excess water to obtain fiber of sulfonated polyetheretherketone polymer; (D) filtering and washing to be neutral by distilled water; (E) drying for 100 hours under the vacuum condition of 24 degrees C; (F) 0.48g ketone is dissolved in purified 30ml dimethyl sulfoxide; (G) adding 0.12g sodium borohydride,; (H) stirring for 120 hours at 12 degrees C under protection of nitrogen environment; (I) cooling to the room temperature; (J) adding mixture to 2-propanol; (K) centrifuging for three times; (L) collecting the precipitate at 70 degrees C for 24 to obtain the white powder; (M) synthesizing brominated graphene; (N) placing 135 mg of graphene oxide, magnetic rotor and 20 ml of sulfuric acid in the reaction flask; (O) stirring the mixture under reflux for 5 hours; (P) isolating product by suction filtration and centrifuged three times with deionized water; (Q) purifying the product then washing multiple times with methanol; (R) drying the product in vacuum at 80 degrees C for 24 hours; (S) synthesizing s-polybenzimidazole; (T) dissolving 1 g (3.3 mmol) of polybenzimidazole in 50 ml of dimethyl sulfoxide in a two-necked flask; (U) adding a magnetic rotor; (V) installing a nitrogen protection device; (W) stirring at room temperature; (X) adding 0.4 g (16.5 mmol) of powdered sodium hydride; (Y) stirring at 85 degrees C; (Z) adding 0.5 g (0.34 ml) of purified 1,4-butane sultone; (() stirring the mixture at 85 degrees C for 24 hours; (\) centrifuging with excess 2-propanol; ()) washing with 2-propanol and distilled water for multiple times until the filtrate appeared neutral; (^) filtering and drying the mixture under vacuum at 80 degrees C for 24 hours; (_) preparing polyetheretherketone copolymer grafted to graphene oxide; (`) dissolving 0.13g of hydroxylated polyetheretherketone in N-Methyl-2-pyrrolidone; (a) dissolving 120mg potassium carbonate in N-Methyl-2-pyrrolidone at 90 degrees C for 1 hour; (b) stirring the mixture for 0.5 hours so that 0.2g of brominated graphene oxide is uniformly dispersed in N-Methyl-2-pyrrolidone; (c) mixing the above three mixture at room temperature; (d) stirred at 135 degrees C under nitrogen atmosphere for 4 days; (e) cooling to room temperature; (f) adding excess of 2-propanol in the mixture; (g) washing isolated polymer with 2-propanol and distilled water until the filtrate appeared neutral; (h) filtering the product; (i) drying the product at 80 degrees C for 12 hours to give a black powder with a yield of 64%; (j) placing Nafion and s-PBI solutions (5 wt%) on polytetrafluoroethylene plate; (k) drying at 80 degrees C under vacuum and then uniformly dissolved in N-Methyl-2-pyrrolidone to obtain a 10 w/v% solution; (l) dissolving graphene oxide-g-sulfonated poly (ether ether ketone) in N-Methyl-2-pyrrolidone under stirring; (m) mixing the above two solutions; (n) stirring for 2 hours; (o) casting the mixture on polytetrafluoroethylene plate; (p) drying under vacuum at 80 degrees C for 48 hours; (q) soaking the film in 2M sulfuric acid for 24 hours; (r) rinsing the film with deionized water until the rinsed deionized water appeared neutral; (s) giving a rough, flexible film to be stored in deionized water for testing, where thickness of the film is maintained at 60-80 mu m; and (t) labeling the membrane.