化学还原法制备铂及铂合金催化剂及其性能

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1、2006ᑈ12᳜䌉䞥ሲDec.2006㄀27ो㄀4ᳳPreciousMetalsVol.27,No.4࣪ᄺ䖬ॳ⊩ࠊ໛䪖ঞ䪖ড়䞥ڀ࣪ࠖঞ݊ᗻ㛑1111112㋶᯹ܝ߬ᰧЎᓴᅛዄ૤哢䰚ᄺ᭠໣⋾⋟᳍ྫྫ1.જᇨⒼᎹϮ໻ᄺMEMSЁᖗ咥啭∳જᇨⒼ1500012.咥啭∳໻ᄺ⬉ᄤᎹ⿟ᄺ䰶咥啭∳જᇨⒼ150080PreparationofPtandPtPreparationofPtandPt-PreparationofPtandPt--basedAlloy/CElectro-basedAlloy/CElectrobasedAlloy/CElectrocbasedAlloy/CElectroccatalysts

2、byChemicalReductioncatalystsbyChemicalReductionatalystsbyChemicalReductionatalystsbyChemicalReductionandTheirPropertiesandTheirPropertiesandTheirProperties111111SUOChunguang,LIUXiaow,LIUXiaowei,LIUXiaowei,ZHANGYufeng,TANGDing,LUXuebin,XIAHongyang,,,2CAOShanshan(1.MEMSCenter,HarbinInstituteofTechnolo

3、gy,Harbin,Heilongjiang150001,China;2.ElectronicsEngineeringCollege,HeilongjiangUniversity,Harbin,Heilongjiang150080,China)AbstractThePt/Cand3kindsofPt-basedalloy/Celectrocatalystsfordirectmethanolfuelcell(DMFC)werepreparedbyimpregnationwithaqueoussolutionandchemicalreductionwithNaBH4.XRD,SEMandEDXan

4、alysesindicatedthattheaverageparticlesizeofactivemetalsisintherangeofseveralnanometerswithexcellentdispersion,andthatthemolarratioofthemarereasonable.ThePt/CandPt-basedalloys/Cwereadoptedasthecathodiccatalystandtheanodiccatalyst,respectively.TheperformancesoftheDMFCweretested.Thepolarizationcurvesan

5、dpowerdensitycurvesofthecellsweremeasuredtodeterminetheoptimalalloycompositionandconditionfortheelectrocatalysts.TheresultsshowedthattheDMFCwith30wt%Pt/Casthecathodiccatalystandn(Pt):n(Ru):n(Ir):n(Mo)=2:1:2:3PtRuIrMo/CastheanodiccatalystatRTin2.0mol/Lmethanolsolutionhasthebestperformances.KeywordsP

6、hysicochemistry;Directmethanolfuelcell(DMFC);Electrocatalyst;Ptcatalyst;Pt-basedalloycatalystsᨬ㽕䞛⫼⏋ড়∈⒊⎆⍌⏡⹐⇶࣪䩴䖬ॳⱘᮍ⊩ࠊ໛њᖂൟⳈ᥹⬆䝛➗᭭⬉∴⫼⬉ڀ࣪ࠖࣙᣀ⺇䕑䪖⺇䕑䪖෎ড়䞥⬉ڀ࣪ࠖXRDSEMEDX⌟䆩㒧ᵰ㸼ᯢڀ࣪ࠖⱘ㉦ᑺ䖒㒇㉇㑻Ϩߚᬷᗻདॳᄤᨽᇨ䜡↨ড়⧚ᇚPt/CPtড়䞥/Cߚ߿԰Ў⬉∴ⱘ䰈ᵕ੠䰇ᵕ⬉ڀ࣪ࠖ䗮䖛⬉∴ⱘᵕ࣪᳆㒓੠ࡳ⥛ᆚᑺ᳆㒓ㄯ䗝ߎ᳔Շⱘڀ࣪ࠖ㒘៤೼ᅸ⏽ϟ⬆䝛⌧ᑺЎ2mol/Lᯊ䰈ᵕ䞛⫼30wt%PtⱘPt/C䰇ᵕ䞛⫼n(Pt)n(Ru)n(Ir)n(Mo)=2123

7、ⱘPtRuIrMo/C⬉ڀ࣪ࠖ݊⬉∴ⱘᗻ㛑᳔ད݇䬂䆡⠽⧚࣪ᄺⳈ᥹⬆䝛➗᭭⬉∴⬉ڀ࣪ࠖPtڀ࣪ࠖPtড়䞥ڀ࣪ࠖЁ೒ߚ㉏োO646;TM911.4᭛⤂ᷛ䆚ⷕA᭛ゴ㓪ো1004-0676(2006)04-0032-06Ⳉ᥹⬆䝛➗᭭⬉∴(Directmethanolfuelcell,DMFC)ᰃⳈ᥹߽⫼⬆䝛ⱘ∈⒊⎆԰Ў➗᭭ᬊ〓᮹ᳳ2005-11-11෎䞥乍Ⳃ೑䰆973乍Ⳃ(******)ᘏ㺙໛䚼乘ⷨ䞡⚍෎