Investigation on the sulfonated poly(ether ether ketone)/poly(amide‐imide)/barium cerate‐based nanocomposite membrane for proton exchange membrane fuel cells

Abstract

The fluorinated Nafion is replaceable by the non-fluorinated clean sulfonated poly (ether ether ketone) for hydrogen-based fuel cell. The acid-base blending of PAI to clean sulfonated poly ether ether ketone (SPEEK) increased the thermal, mechanical, and oxidative properties and decreased the conductivity. It interpreted that higher stability properties appeared on the blended membrane. The loading of BaCeO 3 nanoparticles in the SPEEK/poly (amide-imide) (PAI) matrices was done via solution casting process. This outcome provides improved conductivity, ion-exchange property, water uptake (WU) with controlled stability due to the good interfacial interplay among nanoparticles and polymer. The high conductivity (14.98 × 10 −3 S cm −1 at 80 C) was reached by SPEEK/PAI /BaCeO 3 (90/10/06 wt%) membrane (B3) measured in the electrochemical four-probe impedance spectroscopy. Its current density and power density values are 269 mA cm −2 and 66 mW cm −2 , respectively. The voltage retention of the B3 membrane was maintained almost at 0.92 V and degradation of voltage after 20 hours in the durability study was about 0.01 V.

Chlorosulfonated Polyphenylene Ether Metal–Organic Framework Nanomaterial Composite Proton Exchange Membranes for Fuel Cells

“…6−8 However, the high proton conductivity mainly depends on the degree of sulfonation (DS), while the chemical stability and mechanical properties of PEMs decrease sharply. 9,10 Therefore, researchers have explored a range of doping materials to enhance the properties of PEMs, such as phosphate-based materials, 11,12 boron nitride material, 13 and metal−organic frameworks (MOFs). 14,15 MOF nanomaterials which are constructed by metal ions and organic ligands could create new paths for the proton transfer due to high porosity.…”

“…Proton exchange membranes (PEMs) have been studied extensively as a key part of PEM battery. − Nafion membranes produced by DuPont have excellent proton conductivity, an excessively expensive price, and rapid performance degradation that limit large-scale application . Sulfonated aromatic polymers are considered as a potential alternative to Nafion membranes due to their excellent mechanical properties and chemical stability. − However, the high proton conductivity mainly depends on the degree of sulfonation (DS), while the chemical stability and mechanical properties of PEMs decrease sharply. , Therefore, researchers have explored a range of doping materials to enhance the properties of PEMs, such as phosphate-based materials, , boron nitride material, and metal–organic frameworks (MOFs). , …”

Sandwich assembly of sulfonated poly (ether sulfone) with sulfonated multiwalled carbon nanotubes as an efficient architecture for enhanced electrolyte performance in H 2 / O 2 fuel cells

“…In PEMFC, the polymer electrolyte membrane (PEM) plays a crucial role in determining power conversion efficiency. [1][2][3][4] The ideal PEM should possess high ionic conduction and low electronic conductivity with excellent thermal, chemical and mechanical stability. The fluorinated carbon membrane Nafion, developed by DuPont, is widely used as PEM for PEMFC.…”

Synergistic Effect of Polydopamine-Modified CaZrO3 Perovskite and Hydroxylated SPEEK on Acid–Base Cation Exchange Membrane Fuel Cells

“…The proton exchange membrane fuel cell is an effective technology due to its significant characteristics such as higher efficiency, fewer emissions of harmful gases, and rich fuel source. The transport of protons (H + ) across the electrolyte occurs from the electrochemical reaction of hydrogen gas (fuel) at the anode electrode site. , Nafion shows wider hydrophilic/hydrophobic separation under humid conditions (RH), which forms an interconnected microstructure and causes a superior proton transport property (>80 °C). The fluorinated backbone in the polymer structure promotes mechanical and thermal properties.…”