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dc.contributor.author陈四国zh_CN
dc.contributor.author丁炜zh_CN
dc.contributor.author齐学强zh_CN
dc.contributor.author李莉zh_CN
dc.contributor.author邓子华zh_CN
dc.contributor.author魏子栋zh_CN
dc.contributor.authorCHEN Si-guozh_CN
dc.contributor.authorDING Weizh_CN
dc.contributor.authorQI Xue-qiangzh_CN
dc.contributor.authorLI Lizh_CN
dc.contributor.authorDENG Zi-huazh_CN
dc.contributor.authorWEI Zi-dongzh_CN
dc.date.accessioned2013-11-18T07:47:55Z
dc.date.available2013-11-18T07:47:55Z
dc.date.issued2013-02-28zh_CN
dc.identifier.citation电化学,2013,19(1):53-58.zh_CN
dc.identifier.issn1006-3471zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/58564
dc.description.abstract采用离子交换-电沉积的方法(Ion-exchange/electrodeposition,IEE)制备了一种高Pt利用率催化电极,对所制备电极的表面形貌、催化活性及单电池性能用线性扫描伏安(LSV)、扫描电镜(SEM)、透射电镜(TEM)和单电池测试进行了表征. 结果表明,通过电极制备工艺和离子交换-电沉积参数的调控,能够消除碳载体表面官能团的影响,使铂阳离子只与全氟磺酸树脂(Nafion)上的H+进行交换. 在无铂离子的电解质中,将被交换的铂阳离子还原到与Nafion接触的碳载体上,使每一个铂纳米粒子都处于气体多孔电极的三相界面上,有效地调控铂纳米粒子的尺寸和分散度. 单电池测试表明,以铂载量为0.014 mgPt•cm-2的IEE电极组装的电池的输出功率与铂载量为0.3 mgPt•cm-2的Nafion粘接Pt/C电极相当.zh_CN
dc.description.abstractWe report a novel method based on ion-exchange/electrodeposition (IEE) for constructing high Pt utilization porous electrodes. The electrode prepared using IEE was assessed by linear sweep voltammetry (LSV), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and single cell test. The preliminary results show that the undesired ion-exchange between Pt anion and surface functional group in carbon black can be eliminated through the electrode preparation process, and every Pt particle prepared by IEE is expected to be deposited on the three-phase reaction zone and thus can be fully utilized in fuel cell reactions. The Pt particle size, shape and distribution obtained by IEE can be controlled by modulating the IEE technique and cycles. The power output of the MEA employing a Pt/C electrode prepared by IEE with a Pt loading of 0.014 mgPt•cm-2 is equivalent to that employing a conventional Nafion-bonded Pt/C electrode with a Pt loading of 0.3 mgPt•cm-2.zh_CN
dc.description.sponsorship国家自然科学基金项目(No. 20676156, No. 51072239, No. 21176327)资助zh_CN
dc.language.isozhzh_CN
dc.publisher厦门大学《电化学》编辑部zh_CN
dc.relation.ispartofseries电化学材料基础与表界面研究专辑(中国科学院化学研究所 万立骏院士主编)zh_CN
dc.relation.ispartofseriesSpecial Issue of electrochemical materials and surface/inteface study (Editor: Professor Wan, Lijun)zh_CN
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract9939.shtmlzh_CN
dc.subject燃料电池zh_CN
dc.subject离子交换-电沉积zh_CN
dc.subject铂利用率zh_CN
dc.subjectfuel cellszh_CN
dc.subjection-exchange/electrodepositionzh_CN
dc.subjectPt utilizationzh_CN
dc.title离子交换-电沉积法制备高Pt利用率多孔电极zh_CN
dc.title.alternativePorous Electrodes with High Pt Utilization Obtained by Ion-Exchange/Electrodepositionzh_CN
dc.typeArticlezh_CN
dc.description.note作者联系地址:重庆大学 输配电装备及系统安全新技术国家重点实验室,化学化工学院,重庆 400044zh_CN
dc.description.noteAuthor's Address: The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, Chinazh_CN
dc.description.note通讯作者E-mail:zdwei@cqu.edu.cnzh_CN


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