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ֱӼȼϵPd߻߻ȶ

                     ֱӼȼϵPd߻߻ȶ
                   ֥1121½13
    (1ʡͶصʵңϾʦѧѧϿѧѧԺϾ210097;2йѧԺԴойѧԺԴȻˮصʵң510640;3йѧԺӦûѧо130022)
    ժҪֱӼȼϵ(DFAFC)Pd߻Լкܺõĵ߻ԣ߻ȶԽϲˣPd߻߻ԺȶԵӰԭͻоѾΪDFAFC߻оص㣬DFAFCPd߻Pdϴ߻оͷչſҪPd߻ȱ㡢ȶԼȶԵķͻȣΪPd߻Pdϴ߻ʵӦõ춨
    ؼʣֱӼȼϵ;;Pd߻;߻
    ͼţO646 ױʶ룺A ±ţ0251-0790(2011)07-1445-06
    ΪȼϵӽĤȼϵ(PEMFC)ڼ۸ߡ޺Դ0NafionĤ⣬δҵ12ݣֱӼ״ȼϵ(DMFC)ȼϴ˺ʹ÷㡢Сͱߵŵ㣬״ж׻ӷȼ͸NafionĤ½34ݣо֣һֽϺõļ״ȼϣֱӼȼϵ(DFAFC)кܶŵ59ݣ޶ȼȣNafionĤлӼųãˣNafionĤ͸ʱȼ״ͺܶ࣬DFAFCѳΪȼϵصоȵ㣮DMFCе߻ҪPt߻ڿʼоDFAFC߻ʱҲҪʹPtPt߻61014ݣ1973Parsonsȣ15оPd߻Լĵ߻ܣMaselо1617ݱȽPtPdPtPd߻Լĵ߻ܷ֣Pd߻ϵҪֱͨ;У13ݣPd߻Լĵ߻ԱPt߻õö1822ݣPdPdϴ߻ԽԽܵӣҪDFAFCPd߻Pdϴ߻ķչſ⼰չǰ
    1 Pd߻
    11Pd߻
    Parsonsȣ15о֣Pd߻ϵֱͨ;УHaȣ723״αPd߻ƱDFAFCܽӽΪȼϵPEMFCPdӵò;Pd߻нϴӰ죮磬Yashioȣ24о֣PdӵԼΪ3 nmʱPd߻ĵ߻ãף25ݱPdӵ911 nmʱĵ߻ãKolb26ݺHoshiȣ2227о֣ͬPdľԼĵ߻ԲͬԼĵ߻˳ΪPd(110)Pd(111)Pd(100)һЩо2830òͬƱ״PdߣPd߶Լнϸߵĵ߻Ժȶԣ
    12Pd߻
    ̿Pd(Pd/C)߻оĸPd߻2005꣬Haȣ31״αDFAFCõPd/C߻Pd/C߻PdСԼĵ߻ҪPd߻Pd/C߻оҪòͬϳɷõPdӱȽСPd/C߻203238ݣĽPd/C߻PdӵƽԼΪ3 nmʱPd/C߻Լкܺõĵ߻ԣʹõĺϳɷNH4Fϻԭ20ݡĽлܽ32ݡ巨33ݡܼͬ34ݡNH3ڵĶǻ﷨3536ݡ΢Ķǻ﷨37ݺ͸ĽҺ໹ԭ38ݵȣͼ1ΪNH4 FϻԭһҺ໹ԭƱPd/C߻缫ϵѭߣɼNH4FϻԭƱPd/C߻Լĵ߻ԺһҺ໹ԭҪΪNH4FϻԭƱPd/C߻PdӵƽС3 nmң˵߻ԽϺã20ݣ

    һЩڸϵPd߻ܵоBaiȣ39þε̿壬Ʊ˿Pd߻Լкܸߵĵ߻ԣȣ4041о֣ھ۱ϵPd߻Լкܺõĵ߻ܣо42ݽPd̼ϣ̼ܸصPd߻Լкܺõĵ߻ܣPickupо43ݽͬ߻缫ֿװͬһ缫ϣͬ±Ƚϲͬ߻ܣPd/C߻Լĵ߻ҪPt/CPtRu/C߻߻ȶԲã
    2 Pdϴ߻
    21 Pdϴ߻
    PdPt߻оPdϴ߻Wieckowskiо4445оPdPt߻Լĵ߻ܣPdPt߻Լĵ߻ҪPt߻ȻPd߻Լĵ߻ԱPtPdPt߻ߣ߻ȶԵ˳ȴΪPdPtPdPtһЩо֣PdPt߻Լĵ߻ܱPdPt߻ã4850ݣıȣ51оPdPtԭӱȶPdPt/C߻߻ԵӰ죬Pd0.9Pt0.1/C߻ĵ߻ãLiuȣ52о֣̼׹ΪPtPd߻Լкܸߵĵ߻Ժȶԣڴ߻нϴıȱKenisо53PtPd/PtPd߻˹ֱӼ΢ȼϵأ
    Maselо54Pd/CPdBi/CPdAu/C߻DFAFCPdAu/C߻ɵDFAFCãLeeо55Ʊ˾к-ǽṹPdAu߻Լĵ߻ԺȶԶPd߻ãLinо56öԪķƱ̼׹ܸصPdAu߻õPdAuӵС̼׹ܽӴι̣˶Լкܸߵĵ߻ԣ½о57оAu״̬PdAu/C߻߻ܵӰ죬ֻPdγɺϽAuPdԼĵ߻ܣKucernakо58PdAu߻DFAFC
    Ҧо59ݺMatolcnovaо60оPdCo/C߻Coߴ߻ĻԺȶԣٽֱ;ҪCoήCOPdϵǿȣ½о61ƱPdIr/C߻IrļֹPdӵžۣʹPdIrӵƽСIrļܹCOadλˣPdIr/C߻ԼнϺõĵ߻ܣͼ2ΪͬPdIr/CPd/CIr/C߻缫0.5 mol/L H2SO4+0.5 mol/L HCOOHҺеɨߣԿIrʹPdҪλƣΣPdIrԭӱȺ(51)IrӼPdҪķܶȣ61ݣ

    о62ݵо֣Pd2Co/CPd4Co2 Ir/C߻Լĵ߻ܾPd/CPt/C߻ãѱPdϴ߻PdPb/C63ݣPdCu64ݣPdSb/C65ݣPdFe/C66ݺPdSnPdSb߻67ݵȣ

    22 Pdǽϴ߻
    ЩǽIJҲܹٽPdԼ½о68PdCl2NaH2PO2ҺΪǰƱPdP/C߻оPļPd߻Լĵ߻Լȶԣ½о69ݻûԭƱPdP/C߻ַƱPdP/C߻УPĺNa2HPO2ԻԭƱPdP/C߻˶Լĵ߻ԺȶҲNa2HPO2ԻԭƱPdP/C߻ͼ3Ϊ0.50 mol/L HCOOH0.50 mol/L H2 SO4ҺУڻԭƱPdP/CPd/C߻缫ϵѭߣԿPdP/C߻ϵλPd/C߻ϵƣܶӣ69ݣıо70ݺϳPdB/C߻PdB/C߻ܺõԭPdB/C߻ŻΧBIJ˴߻ıȱλBĵЧӦ½о7172оӶεPd/C߻Լĵ߻ܣָ߻Լĵ߻ҪPd/C߻
    23 Pdϴ߻߻ߵĻ
    Pdϴ߻Լĵ߻һҪPd߻ߵĻ4:
    (1)COǿȺCoIrܽCOPdϵǿȣʹֱͨ;ˣPdCo/CPdIr/C߻Լĵ߻ҪPd/C߻5961ݣSbܽCOPdϵǿȣܽCOPdSb/C߻Լĵ߻Pd/C߻65ݣ
    (2)ЧӦPdP/C߻УPdPڵЧӦʹPdP/C߻PdĺPd/C߻еģʹPdP/C߻Լĵ߻Pd/C߻6768ݣ
    (3)ռЧӦоӶεPd/C߻Լĵ߻ʱ֣ӶռPd/C߻ϵĻλ㣬ˣCOλ㣬ʹCOPdϵ󽵵ͣӶPd/C߻Լĵ߻ܣ7172ݣͼ4Ϊ(PWA)ŨPd/C߻0.19 VܶȵĹϵߣͼ4ɼںPWAĵҺУķܶȾڲPWAģPWAԼPd/C߻缫ϵӦԵĴٽãPWAĴٽPWAŨйأPWAŨΪ015 mg/mLʱٽã71ݣ(4)ֹPd߻ܽĻо֣56ݣPdڼҺܽ⣬Pd߻мAuֹܷPdܽ⣬PdAu߻Լĵ߻Pd߻ԭ֮һ

    3 Pd߻ĵ߻ȶԽϲԭ򼰽취
    Pd߻Լĵ߻ԶPt߻ȶԽϲDFAFCһҪ⣮ױǵо֣DFAFCPd߻ȶԽϲԭ¼:
    (1)Ӱ죮о֣7376ݣڵҺдڵBrClӻPdĻλϣPd߻ĵ߻ԣоDFAFCʱʹøߴԼH2 SO4ʱSO24Pd϶Ӱ죬ˣʹHClO4H2 SO476ݣ
    (2)мӰ죮ȻҪֱͨ;УһͨCO;УֳԽPd߻缫ʱPdCOadʹPd߻ж77ݣо78ݱPd߻缫һʱڵ缫ʩһλPd߻ܱ»о79оֻ֣ҪDFAFCļҺôˮȡ1 hPd߻ĵ߻Ծȫָ
    (3)ֽмӰ죮Pd߻ʹ߻ֽ⣮ҺʱᱻPd߻ֽҪCO2H2OҲһַֽΪCO8081ݣо֣Pd߻Լ߻ֽⲻ˷˴ᣬҷֽCOʹPd߻жӶʹԼĵ߻ԽͣPd/C߻ڼҺн󣬴߻PdӵĽṹᷢ仯ʹPd/C߻ĵ߻ԽͣPd/C߻ˮнͬʱ䣬ṹ͵߻ܾδ仯Pd߻ĵ߻ԵĽͿPd߻ʹֽйأ(4)Pd߻ڼҺпܻһܽ⣮Pd/C߻ڼҺнݺPd߻Pdӽṹ仯һԭPd߻ڼҺһܽ£
    4 DFAFCPd߻ķչչ
    ĿǰDFAFCҪ֮һPd߻ȶԽϲͨƱPdϴ߻Pd߻Լĵ߻ԺȶԣDFAFCڵһPd߻ܴ߻ֽᣬӶ˷Ѵļᣮо֣ڵҺмһЩӼܴ󽵵Pd/C߻߻ֽPd/C߻Լĵ߻ȶԣΪPd߻ȶԽϲṩһµ˼·ΪDFAFCPd߻ȶԽϲPd/C߻߻ֽ⣬ʹDFAFCƷ춨
    οף


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