How to improve Nafion with tailor made annealing
A tailor-made annealing procedure was developed for Nafion in order to avoid a critical degradation of the mechanical properties associated…
Electrochemical synthesis of thin, dense, and conformal anion exchange membranes with quaternary ammonium groups
We report for the first time the electrochemical synthesis in anodic and cathodic conditions of anion-conducting ionomer separators using two…
Stabilized SPEEK Membranes with a High Degree of Sulfonation for Enthalpy Heat Exchangers
In this investigation, we explored for the first time the use of cross-linked sulfonated poly (ether ether ketone) (SPEEK) membranes…
Layered Double Hydroxides Containing an Ionic Liquid: Ionic Conductivity and Use in Composite Anion Exchange Membranes
Zinc-aluminum layered double hydroxide (LDH) containing an ionic liquid, 1-butyl-3-methylimidazolium hydrogen sulfate (BmimSO4), has been synthesized by a co-precipitation method.…
Fluoride-Ion-Conducting Polymers: Ionic Conductivity and Fluoride Ion Diffusion Coefficient in Quaternized Polysulfones
We describe the three‐step synthesis of a new polymeric fluoride ion conductor based on the fully aromatic polymer polysulfone (PSU).…
Hydration and Ionic Conductivity of Model Cation and Anion-Conducting Ionomers in Buffer Solutions (Phosphate, Acetate, Citrate)
We studied the gravimetric and volumetric water uptake and ionic conductivity of two model ionomers, cation-conducting sulfonated poly(ether ether ketone)…
Proton Conductivity of Composite Polyelectrolyte Membranes with Metal‐Organic Frameworks for Fuel Cell Applications
The study of proton conductivity processes has gained intensive attention in the past decades due to their potential applications in…
Stimuli-responsive amphoteric ion exchange polymers bearing carboxylic and amine groups grafted to a cross-linkable silica network
Stimuli-responsive hybrid organic-inorganic amphoteric ion exchange polymers were synthesized via a non-hydrolytic sol–gel process with carboxylic acid and amine groups…
“Intrinsic” Anion Exchange Polymers through the Dissociation of Strong Basic Groups: PPO with Grafted Bicyclic Guanidines
We synthesized anion exchange polymers by a reaction of chloromethylated poly(2,6-dimethyl-1,4-phenylene)oxide (PPO) with strongly basic 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). TBD contains secondary…
Effect of Al substrate microstructure on Layered Double Hydroxide morphology
Layered double hydroxides (LDHs) are 2D ionic lamellar nanomaterials, which attract increasing interest for applications in different fields. This paper…
Influence of the position of ionic groups in amphoteric polyelectrolytes on hydration and ionic conduction: Side chain vs main chain
Amphoteric ionomers were synthesized with two different approaches to study the influence of a flexible side chain containing the functional…
Study of annealed aquivion® ionomers with the INCA method
We investigated the possibility to increase the working temperature and endurance of proton exchange membranes for fuel cells and water…