Novel proton exchange membrane based on crosslinked poly(vinyl alcohol) for direct methanol fuel cells

Effect of different ion-aggregating structures on the property of proton conducting membrane based on polyvinyl alcohol

“…Then, the membranes were annealed at 70 1C for 12 h. The membranes were stored in a sealed bag under a dry environment prior to use. The thickness of these membranes was about 100 μm, which is the thinner one among the traditional PVA membranes (100-300 μm) [19][20][21][22].…”

Preparation and characterization of directional conducting and lower methanol permeable ultrathin membrane based on poly (vinyl alcohol) and imidazolium compounds

“…7B (d)). This is due to the short OH$ radical lifetimes, the OH$ is confined in hydrophilic directional proton channel and the polymer backbone can be well protected [60], so the OH$ radicals cannot penetrate or diffuse into the membrane quickly, contributing to the oxidative stability of the directional conducting membrane [14,57]. Therefore, the PVA directional conducting membrane has moderate oxidative stability, which can be successfully utilized in real fuel cell applications operated under relatively mild conditions.…”

“…Therefore, it is very necessary to prepare novel conducting membranes with ultrathin thickness, low cost and low methanol permeability [14]. Recently, many studies have been carried out to develop new kinds of ionic/proton conducting membranes.…”

“…The membranes exhibited excellent anion conductivity, better thermal stability and lower methanol permeability. Liu et al [14] prepared the poly (vinyl alcohol)/hexafluoroglutaric acid membrane with benzenesulfonic acid sodium salt and GA as binary reaction agents. The cross-linked membranes acquired effective proton transport, high ion exchange capacity (IEC) and good water management.…”

Preparation of KOH‐doped PVA/PSSA Solid Polymer Electrolyte for DMFC: The Influence of TiO2 and PVP on Performance of Membranes

“…Poly (vinyl alcohol) (PVA), a semi-crystalline and non-fluorinated polyhydroxy polymer, introduces interesting properties in fuel cell applications [20][21][22].…”