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1、物理化學學(Wu/iHuaxueXuebao)8Acta.一Chim.Sin.2014,30(1),8-21January[Review]doi:10.3866/PKU.WHXB201311151www.whxb.pku.edu.cn基于膦酸基的高溫質(zhì)子交換膜的研究進展韓帥元岳寶華嚴六明(上海大學理學院化學系,上海200444)摘要:提高質(zhì)子交換膜燃料電池(PEMFCs)的工作溫度,不但可以提高電催化劑的活性以及電催化劑對原料氣中CO等雜質(zhì)氣體的耐受能力,少用甚至不用Pl等貴金屬作電催化劑,還可以
2、簡化PEMFCs的水熱管理系統(tǒng),提高PEMFCs的綜合能量轉(zhuǎn)化效率.實現(xiàn)高溫PEMFCs的核心是開發(fā)能夠適用于高溫PEMFCs的高溫質(zhì)子交換膜(HT-PEM),是PEMFCs的研究熱點.在眾多HT-PEM候選材料中,基于膦酸基的質(zhì)子交換膜材料是最具前途的候選材料之一,是制備HT-PEM的主要研究方向.本文綜述了基于膦酸基的HT_PEM的研究進展,討論了膦酸基參與的質(zhì)子傳導機理,比較了純聚合物膦酸膜、膦酸基接枝改性膜、酸一堿兩性膜、摻雜型復(fù)合膜的電導率、物理化學穩(wěn)定性、機械性能等.最后,展望了基于膦
3、酸基的HT-PEM的發(fā)展趨勢.關(guān)鍵詞:質(zhì)子交換膜燃料電池:高溫質(zhì)子交換膜:有機膦酸:膦酸基接枝聚合物:摻雜型復(fù)合膜酸一堿兩性膜中圖分類號:0647;0627.51O634.5+1:TB324:TB34TM911ResearchProgressintheDevelopmentofHigh-TemperatureProtonExchangeMembranesBasedonPhosphonicAcidGroupHANShuai-YuanYUEBao-HuaYANLiu—Ming(Departmentof
4、Chemistry,CollegeofSciences,ShanghaiUniversity,Shanghai200444,PR.China)Abstract:Increasingtheoperatingtemperatureofprotonexchangemembranefuelcells(PEMFCs)cannotonlyincreasetheirelectrocatalyticactivitiesandtheirtolerancetoimpurities,suchasCO,infeedgas
5、,anddecreasethepreciousmetaIIoadingontheelectrocatalysts.butalsosimplifythehydrothermalmanagementsystemandincreasetheoveralIenergyconversionefficiency.Thecoreobstacletorealizehigh-temperaturePEMFCsiSthedevelopmentofhigh—temperatureprotonexchangemembra
6、nesfHT-PEMs),sothishasaRractedmuchresearchinterest.AmongthemanytypesofHT-PEMS,HT-PEMsbasedonpolymericphosphonicacidareoneofthebestcandidates.a(chǎn)ndthusiSanessentialresearchfield.1nthisarticle,wereviewrecentresearchprogressinHT-PEMSbasedonpolymericphospho
7、nicacid,discusstheprotontransportmechanism,andcomparetheprotoncOnductivitieS,physicaIandchemicaIstabilities,andmechanicalpropertiesofpristinepolymericphosphonicacid,polymersgraftedwithphosphonicacid,copolymersconsistingofphosphonicacidandheterocyclicb
8、ases,andcompositemembranesbasedonphosphonicacidandothermaterials.WefinallysummarizeandgiveanovewiewofsomeofthedevelopmenttrendsinHT-PEMSbasedonpolymericphosphonicacid.KeyWords:Protonexchangemembranefuelcell;High-temperatureprotonexchangemembra