Inorganic particle compound proton exchange membrane for fuel cell and preparation method of proton exchange membrane
A proton exchange membrane and inorganic particle technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of low proton conductivity of conductive membranes, affecting the stability and service life of conductive membranes, etc.
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[0036] The present invention also provides a preparation method of an inorganic particle composite proton exchange membrane for a fuel cell, comprising the following steps:
[0037] Step 1: Dissolve sulfonated polyetheretherketone and aminated mesoporous silica in a solvent respectively, and then mix the above two solutions to obtain a mixed solution; the solvent is preferably a high boiling point solvent with a boiling point above 150°C , including but not limited to N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methylpyrrolidone (NMP) or dimethylsulfoxide (DMSO);
[0038] Step 2: The mixed solution obtained in Step 1 is ultrasonically stirred for 1 to 3 hours to obtain a film-forming liquid, and the film-forming liquid contains sulfonated polyether ether ketone and aminated mesoporous silica in a weight percentage of (93 ~99%): (1~7%);
[0039] Step 3: The film-forming solution obtained in step 2 is cast into a film by casting method, that is, the film-formin...
Embodiment 1
[0048] Under nitrogen protection, add 0.01mol 4,4'-difluorobenzophenone, 0.09mol 4,4'-sulfonated difluorobenzophenone, 0.01mol bisphenol A into the three-necked flask, mix well and add 0.1mol to form Salt anhydrous potassium carbonate, 100mL water-carrying agent toluene and 115mL solvent DMF, reflux with water at 120°C for 5 hours, release water-carrying agent, temperature rise to 160°C, continue reaction for 10 hours, discharge in cold water, soak for 24 hours , boiled in distilled water for 5 to 8 times, and dried in an oven for later use to obtain sulfonated polyether ether ketone.
Embodiment 2
[0050] Under nitrogen protection, add 0.09mol 4,4'-difluorobenzophenone, 0.01mol 4,4'-sulfonated difluorobenzophenone, 0.09mol bisphenol A into the three-necked flask, mix well and add 0.1-0.15 mol salt-forming agent anhydrous potassium carbonate, 120mL water-carrying agent toluene and 125mL solvent DMAc, reflux with water at 140°C for 4 hours to release the water-carrying agent, the temperature rises to 180°C, continue to react for 5 hours, discharge the material in cold water, soak After 48 hours, it was boiled in distilled water for 5-8 times, and dried in an oven for later use to obtain sulfonated polyether ether ketone.
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