Sulfonated poly (ether ether ketone)-based proton exchange membranes for vanadium redox battery applications

Effect of degree of sulfonation and casting solvent on sulfonated poly(ether ether ketone) membrane for vanadium redox flow battery

“…The chemical degradation of SPEEK membrane was attributed to the degradation of membrane backbone, while the eSO 3 H group remained stable [37,51]. The photographs of immersed membranes in 0.1 mol L À1 VO þ 2 solutions were assembled and demonstrated in Fig.…”

Sulphonated PEEK-Azadirachta indica based Composite Membranes for PEM Fuelcells

“…[5][6][7][8][9]. In this regard many research teams tried to replace Nafion with hydrocarbon-based membranes such as sulfonated poly(ether ether ketone), [10] sulfonated poly(fluorenyl ether ketone), [11] sulfonated poly(sulfone) [12] and sulfonated poly(arylene ether sulfone). [13].…”

Comparative study of the cation permeability of protonic, anionic and ampholytic membranes

“…Alternative non-fluorinated cation exchange membranes have been developed [13][14][15] . The family of sulfonated aromatic polymers (SAP 7,9,16,17 ) is of particular interest, because it is well known that, in fuel cell devices, the gas permeability of SAP is below that of perfluorinated ionomers 18,19 , due to more tortuous and less connected hydrated channels; the gas permeability can be further reduced by the presence of cross-link bonds 20 .…”