Synthesis and properties of fluorine-containing polybenzimidazole/silica nanocomposite membranes for proton exchange membrane fuel cells

Mechanical and Dynamic Mechanical Analysis of Proton‐Conducting Polymers

“…Polybenzimidazole has been investigated in nanocomposites with various silica concentrations by Chuang et al [73]. They reported an increase in storage modulus all over the 100-400 C temperature range and a decrease in intensity of the a relaxation peak on tan d, while Ta slightly increases with silica concentration.…”

Epoxides cross-linked hexafluoropropylidene polybenzimidazole membranes for application as high temperature proton exchange membranes

“…Among a number of PBI variants, the polymer containing hexafluoropropylidene groups, termed as F 6 PBI, has high stability towards the attack of radical oxidants and good solubility in the normally used organic solvents comparing with those of the pristine mPBI [21][22][23][24][25]. However, the flexible spacer groups (-C(CF 3 ) 2 -) containing in the main chain of F 6 PBI result in less rigidity of the polymer against the plastification of doped PA, which brings about significant thermoplastic deformation of the membranes at elevated temperatures, such as 130 C [25].…”

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

“…Most of these acid-organic polymer blends, however, have been characterized only below 100°C probably due to their low thermal stability of organic polymers [10][11][12]. On the other hand, plenty of proton conducting inorganic-organic hybrid membranes with excellent thermal stability and high conductivity at intermediate temperatures have been synthesized [13][14][15][16][17][18]; the concept of acid-polymer blends is extended to hybrid acid-base systems.…”