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题名: Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC
作者: Wei, Z. D.;  Chen, S. G.;  Liu, Y.;  Sun, C. X.;  Shao, Z. G.;  Shen, P. K.
通讯作者: Z.D.Wei
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2007-10-25
DOI: 10.1021/jp073360i
卷: 111, 期:42, 页:15456-15463
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 301
产权排名: 4;6
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Polymer electrolyte membrane fuel cell (PEMFC) electrodes were platinized by modulated pulse current electrodeposition. The aim of this study is to look for a way that keeps the advantages but circumvents the disadvantages of electrodeposting Pt for PEMFC electrodes. The capacitance effect of the double layer on the wave pattern of the pulse current was fully considered when choosing the current parameters. An uncatalyzed carbon electrode, on which a layer of Nafion-bonded carbon (NBC) was dispersed in advance, served as a substrate for electrodeposition. The platinized electrode by electrodeposition was assessed by the techniques of cyclic voltammetry, linear-sweep voltammetry, X-ray diffraction, transfer electron microscopy, and so on. The preliminary results show the following: (1) Pt deposition current efficiency in well-modulated pulse current electrodeposition has been markedly improved even to as high as 69.9% compared with 13% in the direct current electrodeposition. (2) It is difficult at the present time to get an electrode with high Pt loadings and good Pt dispersion by pulse electrodeposition because the hydrogen evolution is unavoidable. (3) It is uncertain for Pt deposition current efficiency even though the electrodeposition was conducted under the exact same technique because of the erratic generation and breaking of hydrogen bubbles.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  OXYGEN REDUCTION REACTION ;  CATALYST LAYER ;  PLATINUM ;  ELECTROOXIDATION ;  PERFORMANCE ;  DEPOSITION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000250438900044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99157
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.Chongqing Univ, Key Lab High Voltage Engn & Elect New Technol, Chongqing 400044, Peoples R China
2.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
3.Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 11603, Peoples R China
5.Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

Recommended Citation:
Wei, Z. D.,Chen, S. G.,Liu, Y.,et al. Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(42):15456-15463.
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