Using silica nanoparticles for modifying sulfonated poly(phthalazinone ether ketone) membrane for direct methanol fuel cell : A significant improvement on cell performance

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2005.03.23
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TypeArticle
Journal titleJournal of Power Sources
Volume155
Issue2
Pages111117; # of pages: 7
SubjectSulfonated polymer; Silica nanocomposites; Fuel cell
AbstractSulfonated poly(phthalazinone ether ketone) (sPPEK) with a degree of sulfonation of 1.23 was mixed with silica nanoparticles to form hybrid materials for using as proton exchange membranes. The nanoparticles were found homogeneously dispersed in the polymer matrix and a high 30 phr (parts per hundred resin) loading of silica nanoparticles can be achieved. The hybrid membranes exhibited improved swelling behavior, thermal stability, and mechanical properties. The methanol crossover behavior of the membrane was also depressed such that these membranes are suitable for a high methanol concentration in feed (3 M) in cell test. The membrane with 5 phr silica nanoparticles showed an open cell potential of 0.6V and an optimum power density of 52.9mWcm−2 at a current density of 264.6mAcm−2, which is better than the performance of the pristine sPPEK membrane and Nafion® 117.
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Peer reviewedNo
NRC number47845
NPARC number12401000
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Record identifiercb4d7d0b-79ff-42b2-8d3d-03fa840339f6
Record created2009-10-26
Record modified2016-05-09
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