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RESEARCH PRODUCT
Improvement in the performance of low temperature H2-O2 fuel cell with chitosanephosphotungstic acid composite membranes
F. Di FrancoA. SaccàC.m. PecoraroF. Di QuartoMonica SantamariaI. Gattosubject
Materials scienceEnergy Engineering and Power Technology02 engineering and technologyCondensed Matter Physic010402 general chemistry01 natural sciencesH2-O2 PEMFCChitosanchemistry.chemical_compoundPhosphotungstic acidPolarization (electrochemistry)ShrinkageProton conductorChitosanRenewable Energy Sustainability and the EnvironmentHeteropolyacid021001 nanoscience & nanotechnologyCondensed Matter PhysicsPolyelectrolytePt loading0104 chemical sciencesComposite membraneMembraneFuel TechnologySettore ING-IND/23 - Chimica Fisica ApplicatachemistryChemical engineeringElectrode0210 nano-technologydescription
Abstract Free-standing chitosan/phosphotungstic acid polyelectrolyte membranes, prepared by ionotropic gelation on alumina porous supports, were employed as proton conductor in low temperature H 2 –O 2 fuel cell. A drying step on glass substrate was introduced in the fabrication procedure to reduce shrinkage and consequent corrugation. Membranes were tested with electrodes prepared according to different procedures and with two different Pt loadings, namely 0.5 and 1 mg cm −2 . Both the investigated kinds of electrodes allowed to get very promising power peaks of 550 mW cm −2 in spite of the different Pt content. The polarization curves and the electrochemical impedance spectra suggest that water management is crucial in determining the overall cell performance.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-03-01 |