High molecular weight PVA-modified PVA/PAMPS proton-conducting membranes with increased stability and their application in DMFCs

A review of polymer electrolytes: fundamental, approaches and applications

“…The high hydrophilicity of PVA is due to the presence of a large extent of the polar hydroxyl group. Usage of PVA also provides other advantages like ease in preparation, high abrasion resistance, good flexibility, biocompatibility, excellent chemical and thermal stabilities [98,99]. Superior features of PVA such as high charge storage capacity, high dielectric constant and dopant-dependent electrical properties caused it to receive considerable research interest in the development of fuel cell and electrical double-layer capacitor (EDLC) [100].…”

Where do poly(vinyl alcohol) based membranes stand in relation to Nafion® for direct methanol fuel cell applications?

“…A different type of proton-conducting membrane based on PVA-PAMPS has been reported [45]. In particular, greater hydrophilicity of the membranes emerged, which endows them with excellent oxidative stability.…”

“…Stability, durability and long term performance of PVA based membranes PVA based membranes have been shown to be stable up to 400 C in some cases [129]. They have been shown to be durable over extended periods of operation in Fuel cells and the available data show that these membranes are durable for periods over 70 h and up to one week [45]. The cells incorporating these membranes have delivered power in the range of 15e45 mW cm À2 in the temperature range of 30e80 C showing that these membranes are good enough for the power requirements.…”

Direct methanol fuel cell based on poly(vinyl alcohol)/titanium oxide nanotubes/poly(styrene sulfonic acid) (PVA/nt-TiO2/PSSA) composite polymer membrane

“…It was found that the peak power density of the DMFC with the SIPN membrane using 2 M methanol and oxygen gas was over 100 mW cm −2 at 80 • C. Yang [33] studied a composite membrane based on PVA and sulfated ␤-cyclodextrin for a DMFC. It was found that the peak power densities of the DMFCs with these Furthermore, Qiao et al [34] prepared the proton-conducting composite membranes based on high molecular weight PVA and poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) for DMFC applications. The peak power density of the DMFC fabricated with the acidic PVA/PAMPS membrane was 15.8 mW cm −2 at 30 • C, which reached 42.9 mW cm −2 at 80 • C. Recently, Bhat et al [35] studied the poly(vinyl alcohol)/polystyrene sulfonic acid/mordenite (PVA/PSSA/MOR) composite blend membrane for DMFCs.…”