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Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method; Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method
Zhou, ZH; Wang, SL; Zhou, WJ; Jiang, LH; Wang, GX; Sun, GQ; Zhou, B; Xin, Q
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS ; PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2003-12-15 ; 2003-12-15
DOI10.1039/b310721c ; 10.1039/b310721c
5期:24页:5485-5488
收录类别SCI ; SCI
文章类型Article ; Article
部门归属305 ; 305
项目归属305 ; 305
产权排名1;1 ; 1;1
WOS标题词Science & Technology ; Science & Technology ; Physical Sciences ; Physical Sciences
类目[WOS]Chemistry, Physical ; Chemistry, Physical ; Physics, Atomic, Molecular & Chemical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Chemistry ; Physics ; Physics
关键词[WOS]SUPPORTED PLATINUM CATALYSTS ; SUPPORTED PLATINUM CATALYSTS ; METHANOL OXIDATION ; METHANOL OXIDATION ; OXYGEN REDUCTION ; OXYGEN REDUCTION ; FUEL-CELLS ; FUEL-CELLS ; ELECTROREDUCTION ; ELECTROREDUCTION ; CARBON ; CARBON ; SIZE ; SIZE
英文摘要An improved aqueous impregnation method was used to prepare 40 wt% Pt/C electrocatalysts. TEM analysis of the samples showed that the Pt particles impregnated for a short time have a very narrow size distribution in the range of 1-4 nm with an average size of 2.6 nm. UV-vis spectroscopy measurements verified that the redox reaction between PtCl62- and formaldehyde took place with a slow rate at ambient temperature via a two-step reaction path, where PtCl42- serves as an intermediate. The use of the short-time-impregnated 40 wt% Pt/C as cathode electrocatalysts in direct methanol fuel cells yields better performance than that of commercial 40 wt% Pt/C electrocatalyst. Experimental evidence provides clues for the fundamental understanding of elementary steps of the redox reactions, which helps in guiding the design and preparation of highly dispersed Pt catalyst for fuel cells.; An improved aqueous impregnation method was used to prepare 40 wt% Pt/C electrocatalysts. TEM analysis of the samples showed that the Pt particles impregnated for a short time have a very narrow size distribution in the range of 1-4 nm with an average size of 2.6 nm. UV-vis spectroscopy measurements verified that the redox reaction between PtCl62- and formaldehyde took place with a slow rate at ambient temperature via a two-step reaction path, where PtCl42- serves as an intermediate. The use of the short-time-impregnated 40 wt% Pt/C as cathode electrocatalysts in direct methanol fuel cells yields better performance than that of commercial 40 wt% Pt/C electrocatalyst. Experimental evidence provides clues for the fundamental understanding of elementary steps of the redox reactions, which helps in guiding the design and preparation of highly dispersed Pt catalyst for fuel cells.
语种英语 ; 英语
原文出处查看原文 ; 查看原文
WOS记录号WOS:000187805500022 ; WOS:000187805500022
引用统计
被引频次:40[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/321008/82845
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Methanol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Headwater NonoKinetix Inc, Lawrenceville, NJ 08648 USA
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Zhou, ZH,Wang, SL,Zhou, WJ,et al. Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method, Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2003, 2003,5, 5(24):5485-5488, 5485-5488.
APA Zhou, ZH.,Wang, SL.,Zhou, WJ.,Jiang, LH.,Wang, GX.,...&Xin, Q.(2003).Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,5(24),5485-5488.
MLA Zhou, ZH,et al."Preparation of highly active Pt/C cathode electrocatalysts for DMFCs by an improved aqueous impregnation method".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 5.24(2003):5485-5488.
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