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学科主题: 物理化学
题名: Research and Development of Non-platinum Catalysts for PEMFCS
作者: Zhang HM(张华民) ;  Zhong HX(钟和香)
会议名称: The 60th Annual Meeting of the International Society of Electrochemistry
会议日期: 2009-8-16
出版日期: 2009-08-16
会议地点: 中国
通讯作者: 张华民
部门归属: 三室
主办者: The International Society of Electrochemistry
摘要: Proton exchange membrane fuel cell (PEMFC) is an efficient, silent and low pollution new electric power generator based on two electrochemical reactions: the oxidation of hydrogen at the anode and the reduction of oxygen at the cathode. However, technical and economic barriers, such as reliability and durability, cost and operational flexibility, have prevented their widespread application up to date. Electrocatalyst is one of the key materials used in PEMFC. At present, platinum (Pt) supported on carbon has been regarded as the most active oxygen reduction reaction (ORR) catalyst and widely used in PEMFC. However, the high cost and scarce resources of Pt metal has made it a major technical and economic barrier for large scale commercialization of fuel cell technology. Therefore, development of non-platinum catalysts with high catalytic activity and high stability that can react efficiently in PEMFC and potentially substitute for the Pt-based catalysts is desirable. Herein, the research progress of non-platinum electrocatalysts for DICP, including Se-modified Ru-based catalyst (RuxSey/C, MxRuySez/C), nitrides catalysts (such as MoxN/C), macrocyclic compounds and so on, capable of combining high activity with low cost, is presented. Fig.1 shows TEM images of 55 NixRuySez/C catalyst. It can be seen that the Ru-based catalyst nanoparticles are well dispersed and distributed over the carbon surface with a small particle size. Fig.2 shows the current-potential curves for different catalysts, 50%RuxSey/C and 55%NixRuySez/C with Ru and Se total loading 50%, respectively, compared with TKK 47.6% Pt/C catalysts. The catalyst Se-modified Ru-based catalysts show high activity comparable to Pt/C catalyst due to the modification of Se to Ru. Furthermore, the addition of the transition metal Ni can further improve the activity of the RuxSey/C.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113528
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zhang HM,Zhong HX. Research and Development of Non-platinum Catalysts for PEMFCS[C]. 见:The 60th Annual Meeting of the International Society of Electrochemistry. 中国. 2009-8-16.
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