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电化学  2006 

银在质子交换膜燃料电池空气阴极内促进氧传递研究

, PP. 434-438

Keywords: 质子交换膜,燃料电池,,促进传递

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Abstract:

利用离子交换及随后的氢还原,将单质银负载在质子交换膜(Nafion)孔道内.TEM、XRD表征载银Nafion膜的结构,电化学极限电流法测定氧在载银Nafion膜内的扩散系数.结果表明,因银晶颗粒大于Nafion孔道直径,致使Nafion孔道有所扩张;氧在载银Nafion膜内的扩散系数是无银Nafion膜的4倍.据此,把银引入质子交换膜燃料电池空气阴极催化剂表面的Nafion薄层,则电池的性能在高电流密度下有明显的提高,显示了银对该电极内氧传递的促进作用.

References

[1]  Song G M,Cha S Y,LeeW M.Optim al composition ofpolym er electrolyte fuel cell electrodes determ ined bythe AC impedance m ethdod[J].J.Power Sources,2001,94:78~84.
[2]  Xu Hongfeng(徐洪峰),L in Zh iyin(林治银),Q iu Yan-ling(邱艳玲),et al.Pt/C electrocatalyst for proton ex-change m embrane fuel cell[J].Ch inese Journal of catal-ysis(in Ch inese),2003,24(2):143~148.
[3]  XU Z Q,Q i Z G,Kaufm an A.E ffect of oxygen storagem aterial on the perform ance of proton exchange m em-brane fuel cell[J].J.Power Sources,2003,115:40~47.
[4]  Yu H B,K im J H,Lee H I,et al.Developm ent ofnanophase CeO2-Pt/C cathode catalyst for d irectm etha-nol fuel cell[J].J.Power Sources,2005,140:59~65.
[5]  Hou X iangli(侯向理),Xu Hongfeng(徐洪峰),DongJianhua(董建华),et al.Oxygen enrichm ent effect ofCeO2to the cathode perform ance of proton exchangem embrane fuel cell[J].E lectrochem istry(in Ch inese),2006,12(1):89~92.
[6]  Outlaw R A,Sankaran S N,Hofund G B,et al.Oxygentransport through h igh purity large grain Ag[J].J.M a-terial Research,1988,3(6):1378~83.
[7]  Sungpet A,W ay J D,Koval C A,et al.S ilver dopedNafion-poly(pyrrole)m embranes for fac ilitated perm e-ation of liqu id-phase olefins[J].Journal of M embraneSc ience,2001,189(2):271~79.
[8]  Sakai T,Takenaka H,Torikai E.Oxygen/n itrogen sep-aration by a nafion-Ag m icrocomposite m embrane[J].Journal ofM embrane Sc ience,1987,31:227~232.
[9]  Gode P,L indbergh G,Sundholm G.In-situ m easure-m ents of gas perm eab ility in fuel cellm embranes using acylindrical m icroelectrode[J].Journal of E lectroanaly-tical Chem istry,2002,518(4):115~122.
[10]  Mo Zh ishen(莫志深),Zhang Hongfang(张宏放).Structure of Crystalline Polym ers by X-ray D iffraction(B)[M].Be ijing:Sc ience Press,2003.186~187.
[11]  W ang Shaoting(王绍亭),Chen Tao(陈涛).Funda-m ental of Chem ical Transport Process(B)[M].Be i-jing:Chem ical Industry Press,1998:207~208.

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