Transport properties and direct methanol fuel cell performance of sulfonated poly (ether ether ketone)/Cloisite/triaminopyrimidine nanocomposite polymer electrolyte membrane at moderate temperature

Fabrication and physico-chemical properties of iron titanate nanoparticles based sulfonated poly (ether ether ketone) membrane for proton exchange membrane fuel cell application

“…A literature study on proton conductivity and water uptake of SPEEK based nanocomposite membranes and Nafion 117 is presented in Table 2. As it can be seen, the proton conductivity and water uptake of the SP/IT1 membrane is higher than that of other membranes [38,[54][55][56][57][58][59][60][61]. This improvement in the proton conductivity of SP/IT1 membranes is attributed to the interconnection of hygroscopic IT with ionic regions in the polymer matrix which can create a pathway for proton transfer.…”

Performance of Polymer Electrolyte Membrane for Direct Methanol Fuel Cell Application: Perspective on Morphological Structure

“…On the other hand, the vehicle mechanism depends mainly on the free-water molecules as a transportation agent [82][83][84]. From Figure 11, it can be clearly observed that the transport process of a proton occurs simultaneously by bulk and surface transport mechanisms [40]. These bulk and surface transport mechanisms differ mainly by the Grotthuss and vehicle diffusivity mechanisms, respectively [40,81].…”

“…From Figure 11, it can be clearly observed that the transport process of a proton occurs simultaneously by bulk and surface transport mechanisms [40]. These bulk and surface transport mechanisms differ mainly by the Grotthuss and vehicle diffusivity mechanisms, respectively [40,81]. chemical structure of the carriers (SO3 − and COO − groups).…”

“…Later, Ilbeygi et al [40] studied the properties of organic-inorganic nanocomposite membranes for DMFC, which consisted of sulfonated poly (ether ether ketone) (SPEEK), Cloisite15A ® clays and triaminopyrimidine (TAP). In their study, they found that the methanol permeability for SPEEK/ Cloisite15A ® /TAP (0.52 × 10 −6 cm 2 s −1 ) is lower compared to Nafion 117 (4.29 × 10 −6 cm 2 s −1 ) at 60 °C, As mentioned above, the nature of the transport of proton and methanol is concurrent, as water molecules act as a means of transport.…”

Organic–Inorganic Hybrid Membranes Based on Sulfonated Poly(ether ether ketone) and Tetrabutylphosphonium Bromide Ionic Liquid for PEM Fuel Cell Applications

“…Sulfonated PEEK combines the thermomechanical stability of the semicrystalline PEEK polymer and the ionic conductivity facilitated by the addition of sulfonic acid groups to the polymer chain. [14][15][16] These properties make SPEEK suitable for the fabrication of proton exchange membranes (PEM) for fuel-cell applications, wherein the membrane serves as the electrolyte. [17][18][19] The chemical structure and the 1 H NMR nomenclature of SPEEK repeat units are shown in Figure 1.…”