FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2030489328> ?p ?o ?g. }

• W2030489328 endingPage "494" @default.
• W2030489328 startingPage "485" @default.
• W2030489328 abstract "In order to increase the chemical/thermal stability of the sulfonated poly(ether ether ketone) (sPEEK) polymer for direct methanol fuel cell (DMFC) applications at medium temperatures (up to 130 °C), novel inorganic–organic composite membranes were prepared using sPEEK polymer as organic matrix (sulfonation degree, SD, of 42 and 68%) modified with zirconium phosphate (ZrPh) pretreated with n-propylamine and polybenzimidazole (PBI). The final compositions obtained were: 10.0 wt.% ZrPh and 5.6 wt.% PBI; 20.0 wt.% ZrPh and 11.2 wt.% PBI. These composite membranes were tested in DMFC at several temperatures by evaluating the current–voltage polarization curve, open circuit voltage (OCV) and constant voltage current (CV, 35 mV). The fuel cell ohmic resistance (null phase angle impedance, NPAI) and CO2 concentration in the cathode outlet were also measured. A method is also proposed to evaluate the fuel cell Faraday and global efficiency considering the CH3OH, CO2, H2O, O2 and N2 permeation through the proton exchange membrane (PEM) and parasitic oxidation of the crossover methanol in the cathode. In order to improve the analysis of the composite membrane properties, selected characterization results presented in [V.S. Silva, B. Ruffmann, S. Vetter, A. Mendes, L.M. Madeira, S.P. Nunes, Catal. Today, in press] were also used in the present study. The unmodified sPEEK membrane with SD = 42% (S42) was used as the reference material. In the present study, the composite membrane prepared with sPEEK SD = 68% and inorganic composition of 20.0 wt.% ZrPh and 11.2 wt.% PBI proved to have a good relationship between proton conductivity, aqueous methanol swelling and permeability. DMFC tests results for this membrane showed similar current density output and higher open circuit voltage compared to that of sPEEK with SD = 42%, but with much lower CO2 concentration in the cathode outlet (thus higher global efficiency) and higher thermal/chemical stability. This membrane was also tested at 130 °C with pure oxygen (cathode inlet) and achieved a maximum power density of 50.1 mW cm−2 at 250 mA cm−2." @default.
• W2030489328 created "2016-06-24" @default.
• W2030489328 creator A5000328425 @default.
• W2030489328 creator A5029210122 @default.
• W2030489328 creator A5037944656 @default.
• W2030489328 creator A5048548509 @default.
• W2030489328 creator A5067759365 @default.
• W2030489328 creator A5077721475 @default.
• W2030489328 creator A5077905427 @default.
• W2030489328 creator A5086789441 @default.
• W2030489328 date "2005-08-01" @default.
• W2030489328 modified "2023-10-10" @default.
• W2030489328 title "Performance and efficiency of a DMFC using non-fluorinated composite membranes operating at low/medium temperatures" @default.
• W2030489328 cites W1563722513 @default.
• W2030489328 cites W1899746112 @default.
• W2030489328 cites W1964087092 @default.
• W2030489328 cites W1966123984 @default.
• W2030489328 cites W1982068011 @default.
• W2030489328 cites W1985732865 @default.
• W2030489328 cites W1991730865 @default.
• W2030489328 cites W2014857857 @default.
• W2030489328 cites W2014990138 @default.
• W2030489328 cites W2038032291 @default.
• W2030489328 cites W2057014017 @default.
• W2030489328 cites W2061192452 @default.
• W2030489328 cites W2070004414 @default.
• W2030489328 cites W2074131184 @default.
• W2030489328 cites W2078410507 @default.
• W2030489328 cites W2101772810 @default.
• W2030489328 cites W2114836303 @default.
• W2030489328 cites W2117375316 @default.
• W2030489328 cites W2134342159 @default.
• W2030489328 cites W2169398350 @default.
• W2030489328 doi "https://doi.org/10.1016/j.jpowsour.2004.12.061" @default.
• W2030489328 hasPublicationYear "2005" @default.
• W2030489328 type Work @default.
• W2030489328 sameAs 2030489328 @default.
• W2030489328 citedByCount "96" @default.
• W2030489328 countsByYear W20304893282012 @default.
• W2030489328 countsByYear W20304893282013 @default.
• W2030489328 countsByYear W20304893282014 @default.
• W2030489328 countsByYear W20304893282015 @default.
• W2030489328 countsByYear W20304893282016 @default.
• W2030489328 countsByYear W20304893282018 @default.
• W2030489328 countsByYear W20304893282019 @default.
• W2030489328 countsByYear W20304893282021 @default.
• W2030489328 countsByYear W20304893282022 @default.
• W2030489328 crossrefType "journal-article" @default.
• W2030489328 hasAuthorship W2030489328A5000328425 @default.
• W2030489328 hasAuthorship W2030489328A5029210122 @default.
• W2030489328 hasAuthorship W2030489328A5037944656 @default.
• W2030489328 hasAuthorship W2030489328A5048548509 @default.
• W2030489328 hasAuthorship W2030489328A5067759365 @default.
• W2030489328 hasAuthorship W2030489328A5077721475 @default.
• W2030489328 hasAuthorship W2030489328A5077905427 @default.
• W2030489328 hasAuthorship W2030489328A5086789441 @default.
• W2030489328 hasConcept C104779481 @default.
• W2030489328 hasConcept C113196181 @default.
• W2030489328 hasConcept C127413603 @default.
• W2030489328 hasConcept C132319479 @default.
• W2030489328 hasConcept C147789679 @default.
• W2030489328 hasConcept C159985019 @default.
• W2030489328 hasConcept C17525397 @default.
• W2030489328 hasConcept C178790620 @default.
• W2030489328 hasConcept C185592680 @default.
• W2030489328 hasConcept C188027245 @default.
• W2030489328 hasConcept C192562407 @default.
• W2030489328 hasConcept C2778643723 @default.
• W2030489328 hasConcept C41625074 @default.
• W2030489328 hasConcept C42360764 @default.
• W2030489328 hasConcept C43617362 @default.
• W2030489328 hasConcept C521977710 @default.
• W2030489328 hasConcept C55493867 @default.
• W2030489328 hasConcept C59061564 @default.
• W2030489328 hasConcept C89395315 @default.
• W2030489328 hasConceptScore W2030489328C104779481 @default.
• W2030489328 hasConceptScore W2030489328C113196181 @default.
• W2030489328 hasConceptScore W2030489328C127413603 @default.
• W2030489328 hasConceptScore W2030489328C132319479 @default.
• W2030489328 hasConceptScore W2030489328C147789679 @default.
• W2030489328 hasConceptScore W2030489328C159985019 @default.
• W2030489328 hasConceptScore W2030489328C17525397 @default.
• W2030489328 hasConceptScore W2030489328C178790620 @default.
• W2030489328 hasConceptScore W2030489328C185592680 @default.
• W2030489328 hasConceptScore W2030489328C188027245 @default.
• W2030489328 hasConceptScore W2030489328C192562407 @default.
• W2030489328 hasConceptScore W2030489328C2778643723 @default.
• W2030489328 hasConceptScore W2030489328C41625074 @default.
• W2030489328 hasConceptScore W2030489328C42360764 @default.
• W2030489328 hasConceptScore W2030489328C43617362 @default.
• W2030489328 hasConceptScore W2030489328C521977710 @default.
• W2030489328 hasConceptScore W2030489328C55493867 @default.
• W2030489328 hasConceptScore W2030489328C59061564 @default.
• W2030489328 hasConceptScore W2030489328C89395315 @default.
• W2030489328 hasIssue "2" @default.
• W2030489328 hasLocation W20304893281 @default.
• W2030489328 hasOpenAccess W2030489328 @default.
• W2030489328 hasPrimaryLocation W20304893281 @default.

• next