An overview of the proton conductivity of nafion membranes through a statistical analysis
作者：Liu L, Chen W, & Li Y*
關(guān)鍵字：Nafion membrane Statisticalanalysis, Proton conductivity, Water uptake
論文來源：期刊
發(fā)表時間：2016年
ProtonconductivityofNafion membranes,thekeyfeaturefortheirapplicationinprotonexchange
membrane fuelcells,hasbeenreportedinmanyworks.Itbecomesnecessarytoassemblethesemassive
reports topresentanoverviewforfurtherdevelopmentguidelines.Weapplyanexhaustivesearchand
retrieve3539recordsfrom310originalreports.Theserecordsaredumpedintoadatabaseandasta-
tistical analysisiscarriedouttoestablishtheoverview.Thehistogram,thetrend,thetemperature,the
relativehumidityand fillers relatedtotheprotonconductivityofNafion membranesareinvestigated.
There isnotalwayspositiveprogressinrecent13yearstoimprovetheprotonconductivityofNafion
membranes. Theprotonconductivitycanbe fitted usingasimpleexponentiallyincreasingfunctionfor
relativehumiditydependence,andtheArrheniusequationfortemperaturedependencewithacceptable
correlation confidence. WatercontentsinmembranesfromvaporcanbewelldepictedbyBrunauer–
Emmett–Tellerequation,andtheyhavereasonablecorrelationwithprotonconductivities.Inorganic
fillers usuallyprovidebetterenhancementinprotonconductivitythanorganic fillers, whichisaresultof
the formerhavebetterwater-holdingcapability.Fillersthatcanfacilitatetheformationofpercolated
waterchannelwithlesstortuosityhavehighprobabilitytosignificantly improvetheprotonconductivity
of Nafion membranes.