Proton conducting membranes for medium temperature fuel cells: recent advances and new strategies
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Factors affecting the stability of Nafion conductivity at high temperature and relative humidity
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Preparation and properties of Nafion membranes containing nanoparticles of zirconium phosphate
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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 with SiCl4 to obtain a…
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 procedure includes sol-gel synthesis, Sample…
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 hydrophilic titania particles present an…
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 very harsh environments during long‐term…
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 (MS). Main mass losses can…
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 (poly ether ether ketone) (SPEEK)…
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. (Si,S)PPSU was used as anchor…
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 has been prepared and characterized.…
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 temperature range, by two different…