%0 Journal Article
%T Comparativestudiesofanodegasdiffusionlayersfordirectmethanolfuelcells
%A 高妍
%A 王素力
%A 侯宏英
%A 赵亮
%J 大连理工大学学报
%P 291-297
%D 2014
%R 10.7511/dllgxb201403005
%X Comparativestudiesoffourcommon-usedanodegasdiffusionlayers(A-GDLs)，namelycarboncloth，carbonpaper,carbonpaperbasedonXC-72(inshortXC-72)andGDLmadeofcarbonnanotubes(CNT)fordirectmethanolfuelcells(DMFCs)werecarriedoutanddiscussed.Theresultsofscanningelectronmicroscope(SEM)，mercuryintrusionporosimeter(MIP)andelectrochemicaltestshowthatCNThaslargeporesizedistributioninporesizeof1000-3000nmandthelargesttotalporositycomparedwiththoseoftheotherthree.CarbonpaperandXC-72showdisadvantageousinfluencesoncellperformancesathighcurrentdensity，becausecarbonpaperhasmanylargeporeswhichareunsuitedforwatertransport，whileXC-72hasmanysmallporeswhichareunsuitedforgastransport.Thoughcellwithcarbonclothhasthehighestmethanoldiffusioncoefficient，itshowsalittlelowerperformancethanthatwithCNTduetoitsthickness.Anodepolarization(AP)resultsalsodisplaythatthecellwithCNThastheleastmethanolmasstransferresistance.Asaresult，thecellwithCNTshowsthebestperformancewiththehighestlimitingcurrentdensityandpeakpowerdensityof460mA·cm-2and110mW·cm-2，respectively.
%K directmethanolfuelcells(DMFCs)
%K gasdiffusionlayer(GDL)
%K porosity
%K masstransfer
%K methanoldiffusioncoefficient
%U http://press.dlut.edu.cn/ch/reader/view_abstract.aspx?file_no=20140305&flag=1