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学科主题: 物理化学
题名: High Pt utilization catalyst prepared by ion exchange method for direct methanol fuel cells
作者: Zhu, Shan1, 2, 3;  Wang, Suli1, 2;  Jiang, Luhua1, 2;  Xia, Zhangxun1, 2, 3;  Sun, Hai1, 2;  Sun, Gongquan1, 2
通讯作者: 孙公权
关键词: Direct methanol fuel cell ;  Pt utilization ;  Lifetime ;  Ion exchange ;  Triple-phase zone
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2012-10-01
DOI: 10.1016/j.ijhydene.2012.07.043
卷: 37, 期:19, 页:14543-14548
收录类别: SCI
文章类型: Article
部门归属: DNL03
项目归属: DNL0305
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: A Pt-Nafion/C catalyst is synthesized through a modified ion-exchange method, in which [Pt(NH3)(2)](2+) cations exchange with H+ ions of Nafion/C composites and are reduced by H-2. Based on the results from transmission electron microscopy and inductively coupled plasma atomic emission spectrometry, it is found that the average size of Pt particles is around 2.3 nm and the Pt loading is about 1.8 wt% in the Pt-Nafion/C catalyst. Although the Pt mass activities (MAs) toward oxygen reduction reaction tested in half cells are similar, when used as cathode catalyst for a direct methanol fuel cell, the Pt MA as high as 4.36 A mg(Pt)(-1) are achieved for the Pt-Nafion/C catalyst at 825 mV, which is 6 times higher than that of the Pt/C catalyst. The enhanced Pt utilization could be attributed to the defined location of Pt nanoparticles in the triple phase zones in electrode. Crown Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANE ;  TRIPLE-PHASE-BOUNDARY ;  PULSE ELECTRODEPOSITION ;  OXYGEN REDUCTION ;  CARBON-BLACKS ;  PLATINUM ;  NANOPARTICLES ;  PERFORMANCE ;  ELECTROCATALYSTS ;  FABRICATION
语种: 英语
WOS记录号: WOS:000309493600070
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117825
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Natl Lab Clean Energy, Dalian, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China

Recommended Citation:
Zhu, Shan,Wang, Suli,Jiang, Luhua,et al. High Pt utilization catalyst prepared by ion exchange method for direct methanol fuel cells[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2012,37(19):14543-14548.
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