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An overview of the proton conductivity of nafion membranes through a statistical analysis
作者:Liu L, Chen W, & Li Y*
关键字:Nafion membrane Statisticalanalysis, Proton conductivity, Water uptake
论文来源:期刊
发表时间: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.