Synthesis and properties of a novel sulfonated poly(arylene ether ketone sulfone) membrane with a high β-value for direct methanol fuel cell applications

Improved Physicochemical Stability and High Ion Transportation of Poly(Arylene Ether Sulfone) Blocks Containing a Fluorinated Hydrophobic Part for Anion Exchange Membrane Applications

“…The microstructure of the QN-PAES membranes was investigated by AFM (Figure 7 and Figure S2). As shown in Figure 7, the morphologies of QN-PAES membranes showed distinct microphase separation of the hydrophilic/hydrophobic domain in which the bright regions correspond to the hydrophobic domains, while the dark regions are attributed to the hydrophilic domains (including the quaternary ammonium groups) [40,41,42,43,44,45]. The ion channels of QN-PAES membranes exhibit different conformations depending on the proportion of the hydrophilic/hydrophobic domains.…”

Direct polymerization of a novel sulfonated poly(arylene ether ketone sulfone)/sulfonated poly(vinylalcohol) crosslinked membrane for direct methanol fuel cell applications

“…3,3′-Disulfonated 4,4′-dichlorodiphenyl sulfone (SDCDPS) and 4-carboxylphenyl hydroquinone (4C-PH) were synthesized inhouse [34,35] 4,4′-Difluorobenzophenone (99% purity) was purchased from Yanbian Longjing Chemical Company. 2,2-Bis(4-hydroxyphenyl)propane (bisphenol A) (AR grade) was purchased from Tianjin Guangfu Chemical Reagent Company.…”

“…The methanol concentration in the water reservoir was determined using an Agilent-6890N GC. The methanol diffusion coefficients of the membranes at 25 and 60°C [35] were calculated using the following formula:…”

“…Both C-SPAEKS/PVA and C-SPAEKS/SPVA crosslinked membranes exhibited good methanol diffusion resistance. This is probably because carboxylic acid is a weak acid, which is difficult to dissociate in water; therefore, it easily forms complex hydrogen-bond interactions, thus hindering the penetration of methanol [35]. In addition, the crosslinked structures formed between carboxylic acid and hydroxyl groups block the penetration of methanol.…”

Construction of effective transmission channels by anchoring metal‐organic framework on side‐chain sulfonated poly(arylene ether ketone sulfone) for fuel cells

“…3,3-Disulfonated 4,4-dichlorodiphenyl sulfone (SDCDPS) and 4-amino hydroquinone (4Am-PH) were synthesized according to our previous work. 22,23 The anhydrous potassium carbonate (K 2 CO 3 ), 2-acrylamido-2-methyl propane sulfonic acid (AMPS) (98% purity), benzoyl peroxide (BPO) (AR grade), diallyl bisphenol S (DABPS) (97% purity), 4, 4 0 -difluorobenzophenone (DFB) (99% purity), tetramethylene sulfone (TMS) (99% purity), toluene, 2-methylimidazole (C 4 H 6 N 2 ), N-methyl-2-pyrrolidinone (NMP) (99% purity), cobalt (II) nitrate hexahydrate (Co (NO 3 ) 2 Á6H 2 O), sulfuric acid (H 2 SO 4 ) (98% purity), 2,2-bis(4-hydroxypheny) propane (AR grade) were obtained from commercial sources. Deionized water (H 2 O) came from our laboratory.…”