Search results for "Proton conducting"

showing 3 items of 3 documents

Modelling IR Spectra of Sulfonated Polyether Ether Ketone (SPEEK) Membranes for Fuel Cells

2020

Authors acknowledge support from LSC project No 2014/666 ERDF and students ( ) support from project 2DP/2.1.1.1.0/14/APIA/VIAA/009.

020209 energyMechanical EngineeringProton Conducting MembranesInfrared spectroscopySulfonated Poly(Ether Ether Ketone)02 engineering and technology021001 nanoscience & nanotechnology7. Clean energyATR-IR spectraPolyether ether ketonechemistry.chemical_compoundMembranechemistryMechanics of MaterialsPolymer chemistry:NATURAL SCIENCES:Physics [Research Subject Categories]Theoretical IR spectra0202 electrical engineering electronic engineering information engineeringFuel cellsGeneral Materials Science0210 nano-technologyKey Engineering Materials
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Influence of synthesis conditions on the performance of chitosan–Heteropolyacid complexes as membranes for low temperature H2–O2 fuel cell

2015

Flat, free-standing chitosan/phosphotungstic acid (PTA) polyelectrolyte membranes were prepared by in-situ ionotropic gelation process at room temperature on porous alumina support firstly impregnated by H3PW12O40. Scanning electron microscopy revealed the formation of compact and homogeneous membranes, whose thickness resulted to be dependent on chitosan concentration and reticulation time. X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) evidenced the formation of almost amorphous membrane without appreciable concentration of not protonated NH2 groups and PTA3- ions with preserved Keggin structure. Membranes were tested as proton conductor in low temperature H2-O2 fuel…

ChitosanMaterials scienceProtonconductingRenewable Energy Sustainability and the EnvironmentScanning electron microscopeAnalytical chemistryEnergy Engineering and Power TechnologyHeteropolyacidCondensed Matter PhysicH<inf>2</inf>-O<inf>2</inf> PEMCFCondensed Matter PhysicsElectrochemistryPolyelectrolyteComposite membranechemistry.chemical_compoundKeggin structureSettore ING-IND/23 - Chimica Fisica ApplicataFuel TechnologyMembranechemistryChemical engineeringChitosanHeteropolyacidComposite membraneProton conducting H2 O2 PEMCFPhosphotungstic acidFourier transform infrared spectroscopyProton conductorInternational Journal of Hydrogen Energy
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Chitosan-phosphotungstic acid complex as membranes for low temperature H2-O2 fuel cell

2015

Abstract Free-standing Chitosan/phosphotungstic acid polyelectrolyte membranes were prepared by an easy and fast in-situ ionotropic gelation process performed at room temperature. Scanning electron microscopy was employed to study their morphological features and their thickness as a function of the chitosan concentration. The membrane was tested as proton conductor in low temperature H 2 –O 2 fuel cell allowing to get peak power densities up to 350 mW cm −2 . Electrochemical impedance measurements allowed to estimate a polyelectrolyte conductivity of 18 mS cm −1 .

ChitosanMaterials scienceScanning electron microscopeRenewable Energy Sustainability and the EnvironmentProton conductingH2-O2 PEMCFEnergy Engineering and Power TechnologyHeteropolyacidConductivityElectrochemistryPolyelectrolyteChitosanComposite membranechemistry.chemical_compoundMembraneSettore ING-IND/23 - Chimica Fisica ApplicatachemistryChemical engineeringPolymer chemistryPhosphotungstic acidElectrical and Electronic EngineeringPhysical and Theoretical ChemistryChitosanHeteropolyacidComposite membraneProton conductingH2–O2 PEMFCProton conductor
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