Improving electrochemical stability and electromechanical efficiency of ipmcs: tuning ionic liquid concentration
In the field of soft actuators, Ionomeric Polymer Metal Composites (IPMC)-like devices are a trend,…
Improved Hydrolytic and Mechanical Stability of Sulfonated Aromatic Proton Exchange Membranes Reinforced by Electrospun PPSU Fibers
The hydrolytic stability of ionomer membranes is a matter of concern for the long-term durability…
Impact of Anion Exchange Ionomers on the Electrocatalytic Performance for the Oxygen Reduction Reaction of B-N Co-doped Carbon Quantum Dots on Activated Carbon
Composite electrocatalytic electrodes made from B-N co-doped carbon quantum dots (CQD) and various anion exchange…
Catalytic electrodes for the oxygen reduction reaction based on co-doped (B-N, Si-N, S-N) carbon quantum dots and anion exchange ionomer
B-N-, Si-N, and S-N-co-doped carbon quantum dots (CQD) were prepared by hydrothermal synthesis from inexpensive…
Effects of interactions between SPEEK or Nafion ionomers and bilirubin oxidase on O2 enzymatic reduction
Ionomers such as Nafion are used combined to redox enzymes in bioelectrocatalysis in order to…
Liquid organic hydrogen carriers: Development of a thermodynamic and kinetic model for the assessment of hydrogenation and dehydrogenation processes
Liquid organic hydrogen carriers (LOHCs) are drawing interest as a viable storage technology because of…
A Short Overview of Biological Fuel Cells
This short review summarizes the improvements on biological fuel cells (BioFCs) with or without ionomer…
Anion-Conducting Polymer Electrolyte without Ether Linkages and with Ionic Groups Grafted on Long Side Chains: Poly(Alkylene Biphenyl Butyltrimethyl Ammonium) (ABBA)
In this work we report the synthesis of the new ionomer poly(alkylene biphenyl butyltrimethyl ammonium)…
Nanostructured, metal-free electrodes for the oxygen reduction reaction containing nitrogen-doped carbon quantum dots and a hydroxide ion-conducting ionomer
In this work, we studied the combination of nitrogen-doped carbon quantum dots (N-CQD), a hydroxide-ion…
In situ analysis of hydration and ionic conductivity of sulfonated poly(ether ether ketone) thin films using an interdigitated electrode array and a nanobalance
Proton-conducting polymers, such as sulfonated poly(ether ether ketone) (SPEEK), are of great industrial interest. Such…
Aliphatic anion exchange ionomers with long spacers and no ether links by Ziegler–Natta polymerization: properties and alkaline stability
In this work we report the synthesis of poly(vinylbenzylchloride-co-hexene) copolymer grafted with N,N-dimethylhexylammonium groups to…
Anion Exchange Membranes with 1D, 2D and 3D Fillers: A Review
Hydroxide exchange membrane fuel cells (AEMFC) are clean energy conversion devices that are an attractive…
Tuneable properties of carbon quantum dots by different synthetic methods
Carbon quantum dots (CQD) were prepared from three different precursors and by three bottom-up synthesis…
Silica Containing Composite Anion Exchange Membranes by Sol–Gel Synthesis: A Short Review
This short review summarizes the literature on composite anion exchange membranes (AEM) containing an organo-silica…
Nanocomposite anion exchange membranes with a conductive semi-interpenetrating silica network
Nanocomposite anion exchange membranes were synthesized based on poly(sulfone trimethylammonium) chloride. A hybrid semi-interpenetrating silica…
How the Morphology of Nafion-Based Membranes Affects Proton Transport
This work represents a systematic and in-depth study of how Nafion 1100 membrane preparation procedures…
Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
Proton-conducting ionomers are widespread materials for application in electrochemical energy storage devices. However, their properties…
Ionomer thin-films by electrochemical synthesis: bipolar and ampholytic membranes.
Sooner or layer: Electrochemical deposition is a particularly elegant and effective route for the preparation…
Effective ion mobility in anion exchange ionomers: Relations with hydration, porosity, tortuosity, and percolation
The effective mobility of hydroxide, chloride and fluoride ions is reported in various anion exchange…
Electrochemical synthesis of ion exchange polymers: Comparison between hydroxide and proton conductors
We report the electrochemical synthesis of proton- and hydroxide-conducting ionomers. Sulfonated poly(phenyl ether) with various…
Properties and alkaline stability of composite anion conducting ionomers based on poly(phenylene oxide) grafted with DABCO and Mg/Al lamellar double hydroxide
We studied composite anion exchange membranes made from poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) with grafted 1,4‐diazabicyclo[2.2.2]octane (DABCO)…
Model Long Side-Chain PPO-Based Anion Exchange Ionomers: Properties and Alkaline Stability
The stability of anion exchange membranes is paramount for the use in alkaline fuel cells.…
Alkaline stability of model anion exchange membranes based on poly(phenylene oxide) (PPO) with grafted quaternary ammonium groups: Influence of the functionalization route
We study the effect of pendent methyl groups on the alkaline stability of model anion…
Experimental analysis of an innovative organic membrane for air to air enthalpy exchangers
In recent years, ventilation of indoor environment became relevant in the design of well-insulated buildings;…
Study of annealed aquivion® ionomers with the INCA method
We investigated the possibility to increase the working temperature and endurance of proton exchange membranes…
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…
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…
“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…
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…
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…
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,…
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…
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…
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…
How to improve Nafion with tailor made annealing
A tailor-made annealing procedure was developed for Nafion in order to avoid a critical degradation…
Ionic conductivity of Zn-Al layered double hydroxide films grown on aluminum substrate
Zn–Al Layered Double Hydroxide (LDH) films were grown on aluminum substrates with different anions by…
Composite anion exchange membranes with functionalized hydrophilic or hydrophobic titanium dioxide
Composite anion exchange membranes based on polysulfone with grafted 1,4-diazabicyclo[2.2.2]octane (DABCO) and surface functionalized TiO2…
Bottom-Up Electrochemical Deposition of Poly(styrene sulfonate) on Nanoarchitectured Electrodes
The cathodic deposition of poly(styrene sulfonate) on nanoarchitectured TiO2 electrodes is explored by cyclic voltammetry…
Preparation and Nc/T plots of un-crystallized Nafion 1100 and semi-crystalline Nafion 1000
The last advances on the application of INCA (Ionomer Nc Analysis) methodology for a better…
Anionic conducting composite membranes based on aromatic polymer and layered double hydroxides
Composite anion-conducting membranes were prepared from polysulfone with grafted quaternary ammonium groups and dispersed nanoparticles…
Comparative study of the cation permeability of protonic, anionic and ampholytic membranes
The vanadium ion permeability of various ion-conducting polymer membranes was determined using a home-made apparatus.…
Electrochemically engineered single Li-ion conducting solid polymer electrolyte on titania nanotubes for microbatteries
Single Li-ion conducting p-sulfonated poly(allyl phenyl ether) (SPAPE) is electrochemically synthesized directly on TiO2 nanotubes…
Mixed Membrane Matrices Based on Nafion/UiO-66/SO3H-UiO-66 Nano-MOFs: Revealing the Effect of Crystal Size, Sulfonation, and Filler Loading on the Mechanical and Conductivity Properties
Mixed membrane matrices (MMMs) made up with Nafion and nanocrystals of zirconium metal–organic framework (MOF)…
Mechanical properties of anion exchange membranes by combination of tensile stress-strain tests and dynamic mechanical analysis
The thermomechanical properties of anion exchange polymers based on polysulfone (PSU) quaternized with trimethylamine (TMA)…
Low-Permeability Poly(ether ether ketone)-Based Ampholytic Membranes
Ion-exchange membranes based on sulfonated and sulfaminated poly(ether ether ketone) were prepared by a modified…
Effects of anion substitution on hydration, ionic conductivity and mechanical properties of anion-exchange membranes
Anion-conducting ionomers were synthesized by the chloromethylation of polysulfone (PSU) followed by the formation of…
LoLiPEM: Long life proton exchange membrane fuel cells
This paper presents the main results obtained during the European project (FCH-JU) "LoLiPEM - Long-life…
Anodic Electropolymerization of Sulfonated Poly(phenyl ether): Study of Precursor Isomers and Polymer Growth
The electrochemical deposition of sulfonated poly(phenyl ether) (SPPE) from sulfonated phenol precursors was studied by…
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…
Anion-Conducting Sulfaminated Aromatic Polymers by Acid Functionalization
A simple synthesis technique for the preparation of anionic conducting membranes is presented. In the…
Cation-Conducting Ionomers Made by Ion Exchange of Sulfonated Poly-Ether-Ether-Ketone: Hydration, Mechanical and Thermal Properties and Ionic Conductivity
The hydration in liquid water of various thermally treated SPEEK membranes was determined and confronted…
Chemomechanics of Acidic Ionomers: Hydration Isotherms and Physical Model
The hydration isotherms of various ionomers (Nafion, Sulfonated Poly-Ether-Ether-Ketone, Sulfonated Poly-Phenyl-Sulfone) were measured and described by a thermodynamic model, assuming ideality…
Theoretical and Experimental Infrared Spectra of Hydrated and Dehydrated Sulfonated Poly(Ether Ether Ketone)
Time-dependent FT-IR spectra of sulfonated poly(ether ether ketone) during dehydration show diminishing 1081 cm−1 and 1023 cm−1 band intensities…
Anion-Conducting Ionomers: Study of Type of Functionalizing Amine and Macromolecular Cross-Linking
Anion exchange membranes (AEM) were prepared by chloromethylation and amination of polysulfone (PSU) and polyphenylsulfone…
Stabilized sulfonated aromatic polymers by in situ solvothermal cross-linking
The cross-link reaction via sulfone bridges of sulfonated polyether ether ketone (SPEEK) by thermal treatment…
Cross-Linking of Sulfonated Poly(Ether Ether Ketone) by Thermal Treatment: How Does the Reaction Occur?
The cross‐link reaction between macromolecular chains of sulfonated poly(ether ether ketone) (SPEEK) by thermal treatment…
Proton Mobility in Sulfonated Polyetheretherketone (Speek): Influence of Thermal Crosslinking and Annealing
Sulfonated PolyEtherEtherKetone (SPEEK) was thermally treated at 180 and 140 °C to study the effects of…
Crosslinked SPES-SPPSU Membranes for High Temperature PEMFCs
Highly sulfonated polyethersulfone (SPES; Ione exchange capacity = 3.2 meq/g) and polyphenylsulfone (SPPSU; ion exchange capacity = 3.2 meq/g) were synthesized.…
Electropolymerization of Sulfonated Phenol by Cyclic Voltammetry
In this work, electropolymerization of sulfonated phenol were performed by cyclic voltammetry (CV) on planar…
Thermal Crosslinked and Nanodiamond Reinforced SPEEK Composite Membrane for PEMFCs
SPEEK has been widely considered as a promising alternative to Nafion® membrane for PEMFC. However, a…
Cross-Linked Sulfonated Aromatic Ionomers Via SO2 Bridges: Conductivity Properties
The proton conductivity of SPEEK membranes in situ cross-linked by thermal treatment at 180 °C for various times was investigated…
Sulfonated Aromatic Polymers as Proton-Conducting Solid Electrolytes for Fuel Cells: A Short Review
This review describes main strategies for the development of sulfonated aromatic polymers (SAP) with optimal…
Annealing of Nafion 1100 in the Presence of an Annealing Agent: A powerful Method for Increasing Ionomer Working Temperature in PEMFCs
The possibility of increasing the working temperature of fuel cells using Nafion as ionomer membranes…
More on Nafion Conductivity Decay at Temperatures Higher Than 80 Degrees C: Preparation and First Characterization of in-Plane Oriented Layered Morphologies
In order to have a better understanding of nafion behaviour in fuel cells operating at…
Water Adsorption/Desorption in Proton-Conducting Ionomer Membranes: The Model Case of Sulfonated and Silylated Poly-Ether-Ether-Ketone
The paper describes the processes of water adsorption and desorption in a model hydrated acidic…
Sulfonated Aromatic Ionomers: Analysis of Proton Conductivity and Proton Mobility
Recent progress on proton-conducting Sulfonated Aromatic Polymers is reviewed, including composite and cross-linked ionomers. Proton…
Sulfonated Polyphenyl Ether by Electropolymerization
Electropolymerization of sulfonated phenol was for the first time achieved and studied by cyclic voltammetry…
Crosslinked Speek Membranes: Mechanical, Thermal, and Hydrothermal Properties
The thermal and mechanical behavior, the water uptake (WU), and water diffusion coefficient of sulfonated…
Building Bridges: Crosslinking of Sulfonated Aromatic Polymers-a Review
Sulfonated aromatic polymers (SAP) are promising inexpensive polymer electrolyte membranes for fuel cells, but there…
Conductivity and Hydration of Sulfonated Polyethersulfone in the Range 70-120 Degrees C: Effect of Temperature and Relative Humidity Cycling
Proton conductivity and hydration of sulfonated polyethersulfone (SPES) membranes, with ion exchange capacity of 1.31 meq g−1,…
High Performance Sulfonated Aromatic Ionomers by Solvothermal Macromolecular Synthesis
Thermal cross-linking in presence of residual solvent dimethylsulfoxide without any addition of cross-linker molecules is…
New Approach for the Evaluation of Membranes Transport Properties for Polymer Electrolyte Membrane Fuel Cells
The two major hurdles obstructing the large scale commercialization of PEMFCs (polymer electrolyte membrane fuel…
New Results on the Visco-Elastic Behaviour of Ionomer Membranes and Relations between T-Rh Plots and Proton Conductivity Decay of Nafion (R) 117 in the Range 50-140 oC
The colligative properties of acidic solution inside Nafion® 117 membranes have been investigated, in a large…
Sulphonated Poly Ether Ether Ketone/Amino-Diphenylsilandiol Composite Electrolyte for PEM Fuel Cells
A composite polymeric membrane to be used as electrolyte in polymer electrolyte membrane fuel cells…
Hybrid Composite Membranes Based on SPEEK and Functionalized PPSU for PEM Fuel Cells
Composite membranes formed by sulfonated poly-ether-ether-ketone (SPEEK) and sulfonated and/or silylated poly-phenyl-sulfone ((Si,S)PPSU) were prepared.…
Water Activity Coefficient and Proton Mobility in Hydrated Acidic Polymers
Water vapor sorption and proton conductivity data of composite and cross-linked sulfonated aromatic polymers, sulfonated…
Thermogravimetric Analysis of SPEEK Membranes: Thermal Stability, Degree of Sulfonation and Cross-Linking Reaction
Thermal degradation of SPEEK membranes is studied by coupling thermogravimetric analysis (TGA) and mass spectrometry…
Durability of Sulfonated Aromatic Polymers for Proton-Exchange-Membrane Fuel Cells
As a key component of proton‐exchange‐membrane fuel cells (PEMFCs), proton‐exchange membranes (PEMs) must continuously withstand…
Composite Polymer Electrolytes of Sulfonated Poly-Ether-Ether-Ketone (Speek) with Organically Functionalized TiO2
Synthesis and properties of proton-conducting composites of SPEEK with organically functionalized TiO2 are described. Composites with…
Properties of Proton-Conducting Sulfonated Aromatic Polymer Membranes: Stress-Strain Tests and Dynamical Analysis.
The mechanical properties of sulfonated aromatic polymers (SAPs: SPEEK and SPPSU) are studied by tensile…
Electrodes for PEM Fuel Cells
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High Ionic Exchange Capacity Polyphenylsulfone (SPPSU) and Polyethersulfone (SPES) Cross-Linked by Annealing Treatment: Thermal Stability, Hydration Level and Mechanical Properties.
Thermal stability, hydration and mechanical properties of thermally cross-linked sulfonated aromatic polymers (SAP) with high…
Proton-Conducting Electrolytes Based on Silylated and Sulfonated Polyetheretherketone: Synthesis and Characterization
A derivative of polyetheretherketone (PEEK) having sulfonic acid groups and silicon‐containing substituents covalently bound to…
Measurement of the Young’s modulus of Nafion membranes by Brillouin light scattering
Brillouin light scattering from acoustic phonons has been used to investigate the elastic properties of…
Self-Assembled Nanocomposite Organic-Inorganic Proton Conducting Sulfonated Poly-Ether-Ether-Ketone (SPEEK)-Based Membranes: Optimized Mechanical, Thermal and Electrical Properties
Mechanical, thermal and electrical properties of polymer blends of SPEEK with 7% SiPPSU are reported.…
Analysis of Temperature-Promoted and Solvent-Assisted Cross-Linking in Sulfonated Poly(Ether Ether Ketone) (SPEEK) Proton-Conducting Membranes
Sulfonated poly(ether ether ketone) (SPEEK) membranes were thermally treated at temperatures between 120 and 160…
Proton Conducting Hybrid Membranes Based on Aromatic Polymers Blends for Direct Methanol Fuel Cell Applications
Composite membranes made‐up of sulphonated polyetheretherketone (SPEEK, DS = 0.5) and of a sulphonated and silylated hybrid…
Evolution of Permanent Deformation (or Memory) in Nafion 117 Membranes with Changes of Temperature, Relative Humidity and Time and Its Importance for the Development of Medium Temperature PEMFCs
An important problem for medium temperature polymer electrolyte fuel cells (MT PEMFCs) operating in the…
Mechanical Properties of Hybrid Proton Conducting Polymer Blends Based on Sulfonated Polyetheretherketones
The mechanical properties of polymer blends made from sulfonated polyetheretherketone and sulfonated and/or silylated polyphenylsulfone…
Proton-Conducting Hybrid Polymers: Water Sorption Isotherms and Mechanical Properties of Blends of Sulfonated PEEK and Substituted PPSU Composite
Mechanical properties (elastic modulus, ultimate strength, and elongation at rupture), water sorption isotherms, and chemical…
Synthetic Strategies for the Preparation of Proton-Conducting Hybrid Polymers Based on PEEK and PPSU for PEM Fuel Cells
Synthetic strategies for the preparation of proton-conducting hybrid polymers based on Poly-Ether-Ether-Ketone (PEEK) and Poly-Phenyl-Sulfone…
Organic-Inorganic Hybrid Membranes Based on Sulfonated Polyaryl-Ether-Ketones: Correlation between Water Uptake and Electrical Conductivity
We compare hybrid organic–inorganic polymers, based on sulfonated polyaryl–ether–ketones (S-PEEK) and different sulfonated and silylated…
Effects of Hydrothermal/Thermal Treatments on the Water-uptake of Nafion Membranes and Relations with Changes of Conformation, Counter-elastic force and Tensile Modulus of the Matrix
A kinetic investigation of the water-uptake of Nafion 117 membranes after different hydrothermal and thermal…
Novel Nafion – zirconium phosphate composite membranes with enhanced stability of proton conductivity at medium temperature and high relative humidity
In order to increase the stability of Nafion conductivity at temperatures higher than 100 °C, composite…
SPEEK-TiO2 Nanocomposite Hybrid Proton Conductive Membranes Via in Situ Mixed Sol-Gel Process
Hybrid membranes based on highly sulfonated poly(ether ether ketone) (SPEEK, DS = 0.9) where titania network was…
Hybrid Materials for Polymer Electrolyte Membrane Fuel Cells: Water Uptake, Mechanical and Transport Properties
The water uptake, transport and mechanical properties of organic–inorganic hybrid materials based on sulfonated and…
Preparation and properties of Nafion membranes containing nanoparticles of zirconium phosphate
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Factors affecting the stability of Nafion conductivity at high temperature and relative humidity
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Proton conducting membranes for medium temperature fuel cells: recent advances and new strategies
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On the decay of Nafion conductivity at high Temperature and relative Humidity
The irreversible conductivity decay exhibited by Nafion 117 membranes above certain values of temperature and…
SPEEK/PPSU-Based Organic-Inorganic Membranes: Proton Conducting Electrolytes in Anhydrous and Wet Environments
A telechelic organic–inorganic polymer (SiPPSU) where –SiPh(OH)2 groups are covalently linked to the polymeric chain…
A Simple New Route to Covalent Organic/Inorganic Hybrid Proton Exchange Polymeric Membranes
The development of proton exchange membranes as electrolytes for polymer electrolyte fuel cells operating at…
Thermal Stability and Thermodynamic Properties of Hybrid Proton-Conducting Polyaryl Etherketones
The thermal and structural stability of sulfonated cross-linked PEEK (polyether ether ketone) and its silicon-containing…
A Covalent Organic/Inorganic Hybrid Proton Exchange Polymeric Membrane: Synthesis and Characterization
Commercial polyetheretherketone (Victrex PEEK) was sulfonated up to 90% degree of sulfonation (DS), then reacted…
Preparation and Electrical Properties of Dense Ceramics with Nasicon Composition Sintered at Reduced Temperatures
A reduced temperature route is explored for the preparation of ceramics with NASICON composition. The…