Amino-functionalized mesoporous silica based polyethersulfone–polyvinylpyrrolidone composite membranes for elevated temperature proton exchange membrane fuel cells

Abstract

It is important to find alternative membranes to the state-of-the-art polybenzimidazole based high temperature proton exchange membranes with high proton conductivity at elevated temperature but with simple synthesis procedures.

Fabrication of Binary Sulfonated Poly Ether Sulfone and Sulfonated Polyvinylidene Fluoride‐Co‐Hexafluoro Propylene Blend Membrane as Efficient Electrolyte for Proton Exchange Membrane Fuel Cells

“…Using the following equations, the conductivity were calculated. Where, σ is the ion conductivity, L is the length (cm) between the measuring electrodes, R is the resistance (Ω), W is the width of the film (cm), and T is the thickness (cm) …”

“…13. [25][26][27][28][29][30] σ mS=cm ð Þ= L RTW Commercial gas diffusion electrodes were employed as the electrodes (Pt = 0.5 mg/cm 2 ). The solution was diluted with that DMAc, and then filtered using filter paper by co-solvent (deionized water, acetone/ methanol/1:1:8, v/v/v) to eliminate salt.…”

Hollow Mesoporous Functional Hybrid Materials: Fascinating Platforms for Advanced Applications

“…Amino‐functionalized HMS‐based polyethersulfone–polyvinylpyrrolidone (PES‐PVP) hybrid membranes were developed for proton exchange fuel cells that can work at elevated temperatures . The hybrid membrane exhibited a significant increase in proton conductivity and a decrease in the activation energy for proton diffusion compared to the phosphoric acid (H 3 PO 4 )‐doped PES–PVP membrane.…”

A graphene oxide polymer brush based cross-linked nanocomposite proton exchange membrane for direct methanol fuel cells

“…Hence, additional functional groups (sulfonic acid and amine groups) or surfactant need to be introduced on the surface of nanollers to further increase the organic-inorganic interaction. [13][14][15][16][17] Recently, polymer brushes modied nanomaterials as PEMs has triggered more and more attentions. [18][19][20][21][22] Compared with chemical modication using small molecules, polymer brushes offer the possibility of providing multiple selective functional groups on every so polymer chains.…”