Journal of Membrane Science, 2021 Abstract Sulfonated polyether ether ketone (SPEEK) membranes have attracted much attention as ion exchange membranes for vanadium redox flow batteries (VRFBs) owing to their affordability and low vanadium permeability. It's noted that they suffer from poor proton conductivity at low degree of sulfonation (DS) while poor mechanical stability at high ...
Xuechun Lou +8 more
semanticscholar +2 more sources
Optical anisotropy, molecular orientations, and internal stresses in thin sulfonated poly(ether ether ketone) films [PDF]
, 2015 The thickness, the refractive index, and the optical anisotropy of thin sulfonated poly(ether ether ketone) films, prepared by spin-coating or solvent deposition, have been investigated with spectroscopic ellipsometry.
Benes, N.E. +2 more
core +8 more sources
Polymer Testing, 2021 Sulfonated polyether ether ketone is currently under investigation to replace the expensive Nafion® as polymer electrolyte membrane. Sulfonic acid group is hydrophilic in nature and plays a key role in proton transfer in polymer electrolyte membranes ...
Sher Ayaz, Hai-Yin Yu
doaj +1 more source
Thermo-Mechanical Behavior of Poly(ether ether ketone): Experiments and Modeling [PDF]
, 2021 Observations are reported on poly(ether ether ketone) (PEEK) in uniaxial tensile tests, relaxation tests and creep tests with various stresses in a wide interval of temperatures ranging from room temperature to 180 °C.
Christiansen, Jesper de Claville +1 more
core +2 more sources
Synthesis and process optimization of electrospun PEEK-sulfonated nanofibers by response surface methodology [PDF]
, 2015 In this study electrospun nanofibers of partially sulfonated polyether ether ketone have been produced as a preliminary step for a possible development of composite proton exchange membranes for fuel cells.
Boaretti, Carlo +3 more
core +2 more sources
A sulfonated modification of PEEK for ultralow friction
Friction, 2022 Polyether ether ketone (PEEK) is a widely used material for friction pairs due to its excellent mechanical strength, good wear resistance, and chemical inertness.
Shihua Yuan, Chenhui Zhang
doaj +1 more source
Ion exchange membranes based upon crosslinked sulfonated polyethersulfone for electrochemical applications [PDF]
, 2013 Synthesis and characterization of new ion exchange membranes made from chlorosulfonated polyethersul- fone (SO2Cl-PES) crosslinked by polyaminated crosslinking reagents have been performed.
FAUVARQUE, J.F +5 more
core +6 more sources
Enhancement of Hybrid SPEEK Based Polymer–Cyclodextrin-Silica Inorganic Membrane for Direct Methanol Fuel Cell Application [PDF]
, 2017 Direct methanol fuel cell (DMFC) is one of several types of fuel cells that use proton exchange membrane (PEM) as a liaison between the reaction at the cathode and anode.
Hadiyanto, H. (H) +2 more
core +1 more source
Development of Cost-Effective sPEEK/Al2O3 Composite Membranes with Enhanced Proton Conductivity and Durability for PEMFCs [PDF]
E3S Web of ConferencesPolymer electrolyte membrane (PEM)-based fuel cells are emerging fields with high efficiency, low pollutant emissions, and low material consumption. However, conventional membranes have poor thermal resistance and are expensive.
Hakim Muhammad Fahmi +4 more
doaj +1 more source
Crosslinked SPEEK membranes: Mechanical, thermal, and hydrothermal properties [PDF]
, 2012 The thermal and mechanical behavior, the water uptake (WU), and water diffusion coefficient of sulfonated poly(ether ether ketone) (SPEEK)membranes annealed at 180 degrees C for different times were explored by high-resolution thermogravimetric analysis,
Chailan, J +6 more
core +3 more sources