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dc.contributor.authorTripathi, Bijay Prakash
dc.contributor.authorSchieda, Mauricio
dc.contributor.authorShahi, Vinod Kumar
dc.contributor.authorNunes, Suzana Pereira
dc.date.accessioned2015-08-02T09:14:10Z
dc.date.available2015-08-02T09:14:10Z
dc.date.issued2011-02
dc.identifier.issn03787753
dc.identifier.doi10.1016/j.jpowsour.2010.08.110
dc.identifier.urihttp://hdl.handle.net/10754/561558
dc.description.abstractHerein we report the covalent functionalization of multiwall carbon nanotubes by grafting sulfanilic acid and their dispersion into sulfonated poly(ether ether ketone). The nanocomposites were explored as an option for tuning the proton and electron conductivity, swelling, water and alcohol permeability aiming at nanostructured membranes and electrodes for application in alcohol or hydrogen fuel cells and other electrochemical devices. The nanocomposites were extensively characterized, by studying their physicochemical and electrochemical properties. They were processed as self-supporting films with high mechanical stability, proton conductivity of 4.47 × 10 -2 S cm-1 at 30 °C and 16.8 × 10-2 S cm-1 at 80 °C and 100% humidity level, electron conductivity much higher than for the plain polymer. The methanol permeability could be reduced to 1/20, keeping water permeability at reasonable values. The ratio of bound water also increases with increasing content of sulfonated filler, helping in keeping water in the polymer in conditions of low external humidity level. © 2010 Elsevier B.V.
dc.description.sponsorshipThe authors thank Dr. Lan Zhao for the microscopy. The work of B.P. Tripathi at GKSS was supported by DAAD.
dc.publisherElsevier BV
dc.subjectCarbon nanotubes
dc.subjectFuel cells
dc.subjectMembrane-electrodes
dc.subjectMembranes
dc.subjectNanocomposites
dc.subjectPolymer mixed conductors
dc.titleNanostructured membranes and electrodes with sulfonic acid functionalized carbon nanotubes
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentNanostructured Polymeric Membrane Lab
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJournal of Power Sources
dc.contributor.institutionElectro-Membrane Processes Division, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364002, Gujarat, India
dc.contributor.institutionDepartment of Membranes for Sustainable Energy, GKSS Research Centre Geesthacht GmbH, Max Planck Str. 1, D-21502 Geesthacht, Germany
kaust.personNunes, Suzana Pereira


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