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Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC
Wei, Z. D.; Chen, S. G.; Liu, Y.; Sun, C. X.; Shao, Z. G.; Shen, P. K.; Z.D.Wei; Z.D.Wei
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2007-10-25
DOI10.1021/jp073360i
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
关键词[WOS]MEMBRANE FUEL-CELLS ; OXYGEN REDUCTION REACTION ; CATALYST LAYER ; PLATINUM ; ELECTROOXIDATION ; PERFORMANCE ; DEPOSITION
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.
语种英语
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WOS记录号WOS:000250438900044
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被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/99157
专题中国科学院大连化学物理研究所
通讯作者Z.D.Wei; Z.D.Wei
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
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GB/T 7714
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.
APA Wei, Z. D..,Chen, S. G..,Liu, Y..,Sun, C. X..,Shao, Z. G..,...&Z.D.Wei.(2007).Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC.JOURNAL OF PHYSICAL CHEMISTRY C,111(42),15456-15463.
MLA Wei, Z. D.,et al."Electrodepositing Pt by modulated pulse current on a nafion-bonded carbon substrate as an electrode for PEMFC".JOURNAL OF PHYSICAL CHEMISTRY C 111.42(2007):15456-15463.
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